/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:31:27,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:31:27,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:31:27,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:31:27,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:31:27,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:31:27,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:31:27,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:31:27,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:31:27,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:31:27,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:31:27,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:31:27,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:31:27,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:31:27,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:31:27,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:31:27,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:31:27,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:31:27,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:31:27,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:31:27,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:31:27,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:31:27,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:31:27,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:31:27,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:31:27,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:31:27,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:31:27,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:31:27,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:31:27,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:31:27,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:31:27,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:31:27,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:31:27,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:31:27,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:31:27,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:31:27,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:31:27,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:31:27,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:31:27,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:31:27,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:31:27,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:31:27,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:31:27,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:31:27,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:31:27,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:31:27,334 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:31:27,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:31:27,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:31:27,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:31:27,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:31:27,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:31:27,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:31:27,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:31:27,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:31:27,336 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:31:27,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:31:27,337 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:31:27,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:31:27,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:31:27,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:31:27,338 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:31:27,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:31:27,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:31:27,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:31:27,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:31:27,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:31:27,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:31:27,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:31:27,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:31:27,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:31:27,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:31:27,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:31:27,821 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:31:27,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:31:27,827 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:31:27,828 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:31:27,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-25 13:31:27,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b44b1c218/59b997509a1e440bb00fe13c0ec37f22/FLAG7dece972e [2020-09-25 13:31:28,550 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:31:28,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-25 13:31:28,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b44b1c218/59b997509a1e440bb00fe13c0ec37f22/FLAG7dece972e [2020-09-25 13:31:28,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b44b1c218/59b997509a1e440bb00fe13c0ec37f22 [2020-09-25 13:31:28,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:31:28,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:31:28,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:31:28,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:31:28,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:31:28,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:31:28" (1/1) ... [2020-09-25 13:31:28,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbfc66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:28, skipping insertion in model container [2020-09-25 13:31:28,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:31:28" (1/1) ... [2020-09-25 13:31:28,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:31:28,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:31:29,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:31:29,385 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:31:29,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:31:29,630 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:31:29,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:29 WrapperNode [2020-09-25 13:31:29,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:31:29,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:31:29,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:31:29,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:31:29,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:29" (1/1) ... [2020-09-25 13:31:29,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:29" (1/1) ... [2020-09-25 13:31:29,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:29" (1/1) ... [2020-09-25 13:31:29,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:29" (1/1) ... [2020-09-25 13:31:29,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:29" (1/1) ... [2020-09-25 13:31:29,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:29" (1/1) ... [2020-09-25 13:31:29,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:29" (1/1) ... [2020-09-25 13:31:29,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:31:29,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:31:29,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:31:29,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:31:29,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:31:29,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:31:29,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:31:29,877 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:31:29,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:31:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:31:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:31:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:31:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:31:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:31:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:31:29,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:31:31,378 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:31:31,378 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:31:31,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:31:31 BoogieIcfgContainer [2020-09-25 13:31:31,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:31:31,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:31:31,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:31:31,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:31:31,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:31:28" (1/3) ... [2020-09-25 13:31:31,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eed4759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:31:31, skipping insertion in model container [2020-09-25 13:31:31,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:31:29" (2/3) ... [2020-09-25 13:31:31,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eed4759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:31:31, skipping insertion in model container [2020-09-25 13:31:31,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:31:31" (3/3) ... [2020-09-25 13:31:31,412 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label17.c [2020-09-25 13:31:31,425 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:31:31,444 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:31:31,466 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:31:31,503 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:31:31,503 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:31:31,504 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:31:31,504 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:31:31,504 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:31:31,504 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:31:31,504 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:31:31,505 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:31:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:31:31,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 13:31:31,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:31,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:31,566 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:31,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1479057050, now seen corresponding path program 1 times [2020-09-25 13:31:31,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:31,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880241353] [2020-09-25 13:31:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:32,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:32,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:32,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:35,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:36,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:36,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 13:31:36,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:31:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 13:31:36,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:36,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:31:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:31:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 13:31:36,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:31:37,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:37,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:37,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:37,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 13:31:37,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:37,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:31:37,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:37,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880241353] [2020-09-25 13:31:37,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:31:37,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:31:37,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998617018] [2020-09-25 13:31:37,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:31:37,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:37,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:31:37,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:31:37,328 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:31:39,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:39,659 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 13:31:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:31:39,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-09-25 13:31:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:39,688 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 13:31:39,688 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 13:31:39,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 13:31:39,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 13:31:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 13:31:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 13:31:39,801 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 145 [2020-09-25 13:31:39,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:39,802 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 13:31:39,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:31:39,802 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 13:31:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 13:31:39,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:39,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:39,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:31:39,814 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:39,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:39,814 INFO L82 PathProgramCache]: Analyzing trace with hash 619282751, now seen corresponding path program 1 times [2020-09-25 13:31:39,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:39,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938718400] [2020-09-25 13:31:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:39,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:39,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:40,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:43,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:43,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:44,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:44,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 13:31:44,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:31:44,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:31:44,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:44,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 13:31:44,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 13:31:44,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:45,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:45,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:45,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:45,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:45,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:31:45,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:45,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:45,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:45,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:45,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 13:31:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:45,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:45,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:31:45,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:45,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 13:31:45,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:45,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:45,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:31:45,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:45,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938718400] [2020-09-25 13:31:45,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:45,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:45,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200892631] [2020-09-25 13:31:45,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:45,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:45,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:45,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:45,199 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 13:31:47,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:47,236 INFO L93 Difference]: Finished difference Result 1540 states and 1960 transitions. [2020-09-25 13:31:47,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:47,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 13:31:47,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:47,250 INFO L225 Difference]: With dead ends: 1540 [2020-09-25 13:31:47,250 INFO L226 Difference]: Without dead ends: 737 [2020-09-25 13:31:47,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:31:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-09-25 13:31:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 715. [2020-09-25 13:31:47,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-09-25 13:31:47,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 834 transitions. [2020-09-25 13:31:47,294 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 834 transitions. Word has length 179 [2020-09-25 13:31:47,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:47,295 INFO L479 AbstractCegarLoop]: Abstraction has 715 states and 834 transitions. [2020-09-25 13:31:47,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:47,295 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 834 transitions. [2020-09-25 13:31:47,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 13:31:47,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:47,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:47,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:31:47,301 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:47,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:47,302 INFO L82 PathProgramCache]: Analyzing trace with hash 229525439, now seen corresponding path program 1 times [2020-09-25 13:31:47,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:47,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34804606] [2020-09-25 13:31:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:47,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:49,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:50,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:52,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:52,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 13:31:52,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:52,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 13:31:52,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:52,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:52,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:31:52,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 13:31:52,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 13:31:52,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:52,796 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2020-09-25 13:31:53,045 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-09-25 13:31:53,209 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-09-25 13:31:53,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:53,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:53,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:53,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:31:53,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:53,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:53,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:53,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:53,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:53,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:31:53,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:53,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 13:31:53,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:53,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:31:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:53,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:31:53,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:54,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34804606] [2020-09-25 13:31:54,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:54,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:31:54,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444386881] [2020-09-25 13:31:54,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:31:54,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:54,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:31:54,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:31:54,257 INFO L87 Difference]: Start difference. First operand 715 states and 834 transitions. Second operand 17 states. [2020-09-25 13:31:56,291 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 13:31:56,606 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 100 [2020-09-25 13:31:58,241 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-09-25 13:31:58,610 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-09-25 13:31:59,046 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-25 13:31:59,232 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-09-25 13:31:59,594 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-09-25 13:31:59,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:59,989 INFO L93 Difference]: Finished difference Result 2312 states and 2849 transitions. [2020-09-25 13:31:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:31:59,996 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 180 [2020-09-25 13:31:59,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:00,008 INFO L225 Difference]: With dead ends: 2312 [2020-09-25 13:32:00,009 INFO L226 Difference]: Without dead ends: 1616 [2020-09-25 13:32:00,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=235, Invalid=521, Unknown=0, NotChecked=0, Total=756 [2020-09-25 13:32:00,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2020-09-25 13:32:00,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1578. [2020-09-25 13:32:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-09-25 13:32:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 1839 transitions. [2020-09-25 13:32:00,096 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 1839 transitions. Word has length 180 [2020-09-25 13:32:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:00,096 INFO L479 AbstractCegarLoop]: Abstraction has 1578 states and 1839 transitions. [2020-09-25 13:32:00,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 13:32:00,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 1839 transitions. [2020-09-25 13:32:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 13:32:00,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:00,105 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:00,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:32:00,106 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:00,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:00,107 INFO L82 PathProgramCache]: Analyzing trace with hash 329651812, now seen corresponding path program 1 times [2020-09-25 13:32:00,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:00,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763405096] [2020-09-25 13:32:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:00,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:00,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:00,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:00,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:05,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:05,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 13:32:05,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:32:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 13:32:05,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:05,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:32:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 13:32:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:32:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:05,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:05,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:05,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:05,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:32:05,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:05,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:05,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:05,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:05,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:05,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:32:05,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:05,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:32:05,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:05,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:05,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:05,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:32:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:05,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:05,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:32:05,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:05,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 13:32:05,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:05,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:05,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:32:05,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:05,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:32:05,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 13:32:06,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763405096] [2020-09-25 13:32:06,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:06,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:32:06,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972671687] [2020-09-25 13:32:06,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:32:06,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:06,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:32:06,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:32:06,021 INFO L87 Difference]: Start difference. First operand 1578 states and 1839 transitions. Second operand 8 states. [2020-09-25 13:32:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:09,088 INFO L93 Difference]: Finished difference Result 3545 states and 4229 transitions. [2020-09-25 13:32:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:32:09,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-09-25 13:32:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:09,100 INFO L225 Difference]: With dead ends: 3545 [2020-09-25 13:32:09,100 INFO L226 Difference]: Without dead ends: 1891 [2020-09-25 13:32:09,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:32:09,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2020-09-25 13:32:09,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1874. [2020-09-25 13:32:09,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1874 states. [2020-09-25 13:32:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2151 transitions. [2020-09-25 13:32:09,179 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2151 transitions. Word has length 223 [2020-09-25 13:32:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:09,181 INFO L479 AbstractCegarLoop]: Abstraction has 1874 states and 2151 transitions. [2020-09-25 13:32:09,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:32:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2151 transitions. [2020-09-25 13:32:09,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 13:32:09,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:09,191 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:09,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:32:09,192 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:09,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:09,192 INFO L82 PathProgramCache]: Analyzing trace with hash -311286623, now seen corresponding path program 1 times [2020-09-25 13:32:09,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:09,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689173987] [2020-09-25 13:32:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:09,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:09,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:12,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:13,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:14,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:14,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 13:32:14,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:32:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 13:32:14,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:14,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:32:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:32:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-25 13:32:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:14,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:14,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:14,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:14,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:14,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:14,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:32:14,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:14,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:14,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:32:14,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:14,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:14,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:14,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:14,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:14,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:32:14,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:32:14,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-09-25 13:32:14,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:14,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:14,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:32:14,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:14,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 13:32:14,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:15,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689173987] [2020-09-25 13:32:15,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:15,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:32:15,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22886545] [2020-09-25 13:32:15,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:32:15,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:15,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:32:15,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:32:15,166 INFO L87 Difference]: Start difference. First operand 1874 states and 2151 transitions. Second operand 11 states.