/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=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/Problem10_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:28:52,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:28:52,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:28:52,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:28:52,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:28:52,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:28:52,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:28:52,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:28:52,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:28:52,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:28:52,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:28:52,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:28:52,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:28:52,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:28:52,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:28:52,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:28:52,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:28:52,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:28:52,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:28:52,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:28:52,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:28:52,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:28:52,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:28:52,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:28:52,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:28:52,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:28:52,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:28:52,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:28:52,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:28:52,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:28:52,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:28:52,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:28:52,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:28:52,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:28:52,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:28:52,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:28:52,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:28:52,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:28:52,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:28:52,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:28:52,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:28:52,293 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 [2020-09-24 19:28:52,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:28:52,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:28:52,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:28:52,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:28:52,345 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:28:52,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:28:52,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:28:52,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:28:52,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:28:52,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:28:52,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:28:52,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:28:52,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:28:52,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:28:52,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:28:52,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:28:52,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:28:52,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:28:52,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:28:52,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:28:52,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:28:52,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:28:52,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:28:52,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:28:52,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:28:52,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:28:52,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:28:52,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:28:52,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:28:52,352 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=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; [2020-09-24 19:28:52,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:28:52,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:28:52,809 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:28:52,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:28:52,811 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:28:52,812 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-24 19:28:52,883 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2880cb574/daf64afa789240fea8b56d652366c4ce/FLAGfc32b2bd0 [2020-09-24 19:28:53,565 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:28:53,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-24 19:28:53,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2880cb574/daf64afa789240fea8b56d652366c4ce/FLAGfc32b2bd0 [2020-09-24 19:28:53,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2880cb574/daf64afa789240fea8b56d652366c4ce [2020-09-24 19:28:53,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:28:53,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:28:53,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:28:53,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:28:53,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:28:53,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:28:53" (1/1) ... [2020-09-24 19:28:53,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fe5b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:53, skipping insertion in model container [2020-09-24 19:28:53,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:28:53" (1/1) ... [2020-09-24 19:28:53,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:28:53,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:28:54,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:28:54,485 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:28:54,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:28:54,619 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:28:54,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:54 WrapperNode [2020-09-24 19:28:54,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:28:54,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:28:54,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:28:54,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:28:54,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:54" (1/1) ... [2020-09-24 19:28:54,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:54" (1/1) ... [2020-09-24 19:28:54,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:54" (1/1) ... [2020-09-24 19:28:54,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:54" (1/1) ... [2020-09-24 19:28:54,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:54" (1/1) ... [2020-09-24 19:28:54,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:54" (1/1) ... [2020-09-24 19:28:54,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:54" (1/1) ... [2020-09-24 19:28:54,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:28:54,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:28:54,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:28:54,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:28:54,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:54" (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 [2020-09-24 19:28:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:28:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:28:54,843 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:28:54,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:28:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:28:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:28:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:28:54,844 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:28:54,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:28:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:28:54,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:28:56,348 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:28:56,348 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:28:56,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:28:56 BoogieIcfgContainer [2020-09-24 19:28:56,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:28:56,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:28:56,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:28:56,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:28:56,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:28:53" (1/3) ... [2020-09-24 19:28:56,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56783f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:28:56, skipping insertion in model container [2020-09-24 19:28:56,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:28:54" (2/3) ... [2020-09-24 19:28:56,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56783f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:28:56, skipping insertion in model container [2020-09-24 19:28:56,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:28:56" (3/3) ... [2020-09-24 19:28:56,367 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-24 19:28:56,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:28:56,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:28:56,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:28:56,453 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:28:56,454 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:28:56,454 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:28:56,454 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:28:56,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:28:56,454 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:28:56,455 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:28:56,455 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:28:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:28:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 19:28:56,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:56,497 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] [2020-09-24 19:28:56,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:56,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-24 19:28:56,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:56,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997235313] [2020-09-24 19:28:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:57,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:57,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:57,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:28:57,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:28:57,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-09-24 19:28:57,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:28:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:28:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 19:28:57,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:28:57,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:28:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:57,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:28:57,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:28:57,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:28:57,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:28:57,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:28:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:28:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:28:57,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:28:57,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:28:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:28:57,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997235313] [2020-09-24 19:28:57,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:28:57,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:28:57,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677739119] [2020-09-24 19:28:57,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:28:57,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:28:57,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:28:57,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:28:57,719 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 19:28:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:28:59,533 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 19:28:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:28:59,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-24 19:28:59,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:28:59,572 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 19:28:59,573 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 19:28:59,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:28:59,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 19:28:59,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 19:28:59,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 19:28:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 19:28:59,683 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 67 [2020-09-24 19:28:59,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:28:59,686 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 19:28:59,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:28:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 19:28:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-24 19:28:59,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:28:59,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:28:59,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:28:59,697 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:28:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:28:59,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1559188019, now seen corresponding path program 1 times [2020-09-24 19:28:59,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:28:59,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141726638] [2020-09-24 19:28:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:28:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:28:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:28:59,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:00,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:00,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:00,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:00,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:00,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 19:29:00,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:29:00,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-24 19:29:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:29:00,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:00,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:00,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:00,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:00,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:00,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:00,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:00,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:00,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:00,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:00,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 19:29:00,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 19:29:00,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:01,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141726638] [2020-09-24 19:29:01,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:01,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:01,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511884222] [2020-09-24 19:29:01,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:01,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:01,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:01,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:01,011 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-24 19:29:02,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:02,884 INFO L93 Difference]: Finished difference Result 1235 states and 1577 transitions. [2020-09-24 19:29:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:02,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-24 19:29:02,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:02,890 INFO L225 Difference]: With dead ends: 1235 [2020-09-24 19:29:02,890 INFO L226 Difference]: Without dead ends: 707 [2020-09-24 19:29:02,893 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 [2020-09-24 19:29:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-24 19:29:02,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 697. [2020-09-24 19:29:02,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 19:29:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 855 transitions. [2020-09-24 19:29:02,934 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 855 transitions. Word has length 147 [2020-09-24 19:29:02,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:02,935 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 855 transitions. [2020-09-24 19:29:02,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 855 transitions. [2020-09-24 19:29:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 19:29:02,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:02,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:02,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:29:02,944 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:02,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:02,945 INFO L82 PathProgramCache]: Analyzing trace with hash 196926794, now seen corresponding path program 1 times [2020-09-24 19:29:02,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:02,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900395779] [2020-09-24 19:29:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:03,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:03,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:03,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 19:29:03,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:03,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:29:03,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 19:29:04,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 19:29:04,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:04,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:04,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:04,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:04,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:04,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:04,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:04,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:04,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:04,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:04,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:04,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:04,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:04,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 19:29:04,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 19:29:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:04,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900395779] [2020-09-24 19:29:04,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:04,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:04,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639614176] [2020-09-24 19:29:04,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:04,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:04,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:04,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:04,296 INFO L87 Difference]: Start difference. First operand 697 states and 855 transitions. Second operand 5 states. [2020-09-24 19:29:06,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:06,038 INFO L93 Difference]: Finished difference Result 1693 states and 2168 transitions. [2020-09-24 19:29:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:06,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 19:29:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:06,053 INFO L225 Difference]: With dead ends: 1693 [2020-09-24 19:29:06,053 INFO L226 Difference]: Without dead ends: 1011 [2020-09-24 19:29:06,056 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 [2020-09-24 19:29:06,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-09-24 19:29:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2020-09-24 19:29:06,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-09-24 19:29:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1242 transitions. [2020-09-24 19:29:06,118 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1242 transitions. Word has length 156 [2020-09-24 19:29:06,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:06,119 INFO L479 AbstractCegarLoop]: Abstraction has 1001 states and 1242 transitions. [2020-09-24 19:29:06,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:06,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1242 transitions. [2020-09-24 19:29:06,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-24 19:29:06,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:06,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:06,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:29:06,142 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:06,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:06,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1223684533, now seen corresponding path program 1 times [2020-09-24 19:29:06,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:06,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966404643] [2020-09-24 19:29:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:06,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:06,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:07,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:07,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-24 19:29:07,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:07,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-24 19:29:07,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:29:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:29:07,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-24 19:29:07,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:07,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:07,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:07,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:07,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:07,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:29:07,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:07,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:07,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:29:07,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:07,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:07,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:07,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 19:29:07,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:07,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-24 19:29:07,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:07,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:07,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 19:29:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:29:07,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966404643] [2020-09-24 19:29:07,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:29:07,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:29:07,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863943031] [2020-09-24 19:29:07,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:07,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:07,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:07,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:07,805 INFO L87 Difference]: Start difference. First operand 1001 states and 1242 transitions. Second operand 7 states. [2020-09-24 19:29:10,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:10,085 INFO L93 Difference]: Finished difference Result 2527 states and 3202 transitions. [2020-09-24 19:29:10,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:10,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-09-24 19:29:10,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:10,098 INFO L225 Difference]: With dead ends: 2527 [2020-09-24 19:29:10,099 INFO L226 Difference]: Without dead ends: 1541 [2020-09-24 19:29:10,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:10,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2020-09-24 19:29:10,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1481. [2020-09-24 19:29:10,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-09-24 19:29:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1801 transitions. [2020-09-24 19:29:10,163 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1801 transitions. Word has length 213 [2020-09-24 19:29:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:10,164 INFO L479 AbstractCegarLoop]: Abstraction has 1481 states and 1801 transitions. [2020-09-24 19:29:10,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1801 transitions. [2020-09-24 19:29:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 19:29:10,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:10,171 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:10,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:29:10,173 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:10,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:10,173 INFO L82 PathProgramCache]: Analyzing trace with hash -2140864308, now seen corresponding path program 1 times [2020-09-24 19:29:10,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:10,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050681178] [2020-09-24 19:29:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:10,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:10,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:10,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:10,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:11,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:11,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-24 19:29:11,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:29:11,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-09-24 19:29:11,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:11,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:11,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:29:11,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 19:29:11,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:11,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:11,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:11,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:11,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:11,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:11,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:29:11,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:11,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:11,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:11,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:11,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:11,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:29:11,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:11,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-24 19:29:11,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:11,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:29:11,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:11,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:29:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:11,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:11,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:11,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:29:11,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 19:29:11,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:29:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:11,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050681178] [2020-09-24 19:29:11,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:11,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:11,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146752258] [2020-09-24 19:29:11,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:11,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:11,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:11,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:11,786 INFO L87 Difference]: Start difference. First operand 1481 states and 1801 transitions. Second operand 7 states. [2020-09-24 19:29:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:14,011 INFO L93 Difference]: Finished difference Result 3459 states and 4333 transitions. [2020-09-24 19:29:14,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:14,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-09-24 19:29:14,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:14,020 INFO L225 Difference]: With dead ends: 3459 [2020-09-24 19:29:14,020 INFO L226 Difference]: Without dead ends: 1489 [2020-09-24 19:29:14,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:29:14,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2020-09-24 19:29:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1445. [2020-09-24 19:29:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1445 states. [2020-09-24 19:29:14,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1721 transitions. [2020-09-24 19:29:14,068 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1721 transitions. Word has length 239 [2020-09-24 19:29:14,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:14,068 INFO L479 AbstractCegarLoop]: Abstraction has 1445 states and 1721 transitions. [2020-09-24 19:29:14,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:14,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1721 transitions. [2020-09-24 19:29:14,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-24 19:29:14,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:14,073 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:14,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:29:14,073 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:14,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:14,074 INFO L82 PathProgramCache]: Analyzing trace with hash 890387463, now seen corresponding path program 1 times [2020-09-24 19:29:14,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:14,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215630080] [2020-09-24 19:29:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:14,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:14,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:15,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:15,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:15,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-24 19:29:15,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:15,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-24 19:29:15,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:15,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:29:15,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 19:29:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:15,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:15,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:15,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:15,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:15,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:15,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:15,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:15,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:15,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:15,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:15,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:15,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:15,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 19:29:15,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:15,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:15,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:29:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:15,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:15,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:15,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 19:29:15,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 19:29:15,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 19:29:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:29:15,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215630080] [2020-09-24 19:29:15,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:15,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:29:15,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813156646] [2020-09-24 19:29:15,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:29:15,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:15,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:29:15,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:29:15,732 INFO L87 Difference]: Start difference. First operand 1445 states and 1721 transitions. Second operand 8 states. [2020-09-24 19:29:18,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:18,397 INFO L93 Difference]: Finished difference Result 3529 states and 4431 transitions. [2020-09-24 19:29:18,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:18,398 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 254 [2020-09-24 19:29:18,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:18,408 INFO L225 Difference]: With dead ends: 3529 [2020-09-24 19:29:18,408 INFO L226 Difference]: Without dead ends: 2099 [2020-09-24 19:29:18,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:18,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2020-09-24 19:29:18,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2065. [2020-09-24 19:29:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-09-24 19:29:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2612 transitions. [2020-09-24 19:29:18,472 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2612 transitions. Word has length 254 [2020-09-24 19:29:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:18,473 INFO L479 AbstractCegarLoop]: Abstraction has 2065 states and 2612 transitions. [2020-09-24 19:29:18,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:29:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2612 transitions. [2020-09-24 19:29:18,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-24 19:29:18,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:18,480 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:18,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:29:18,481 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:18,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:18,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1649605350, now seen corresponding path program 1 times [2020-09-24 19:29:18,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:18,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457860430] [2020-09-24 19:29:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:18,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:18,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:19,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-09-24 19:29:19,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:19,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-09-24 19:29:19,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-09-24 19:29:19,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:29:19,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:19,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:19,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:19,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:19,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:19,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:19,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:19,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:19,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:19,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:19,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:19,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 19:29:19,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:19,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:19,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:19,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:29:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:19,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:19,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:19,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 19:29:19,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:19,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 19:29:19,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:19,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:29:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-24 19:29:20,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457860430] [2020-09-24 19:29:20,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:20,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:29:20,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13371377] [2020-09-24 19:29:20,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:29:20,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:20,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:29:20,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:20,148 INFO L87 Difference]: Start difference. First operand 2065 states and 2612 transitions. Second operand 6 states. [2020-09-24 19:29:21,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:21,928 INFO L93 Difference]: Finished difference Result 2081 states and 2640 transitions. [2020-09-24 19:29:21,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:21,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 261 [2020-09-24 19:29:21,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:21,942 INFO L225 Difference]: With dead ends: 2081 [2020-09-24 19:29:21,942 INFO L226 Difference]: Without dead ends: 2079 [2020-09-24 19:29:21,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2020-09-24 19:29:21,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2065. [2020-09-24 19:29:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-09-24 19:29:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2611 transitions. [2020-09-24 19:29:21,995 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2611 transitions. Word has length 261 [2020-09-24 19:29:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:21,996 INFO L479 AbstractCegarLoop]: Abstraction has 2065 states and 2611 transitions. [2020-09-24 19:29:21,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:29:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2611 transitions. [2020-09-24 19:29:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-09-24 19:29:22,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:22,003 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:22,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:29:22,003 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:22,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:22,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1883759525, now seen corresponding path program 1 times [2020-09-24 19:29:22,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:22,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897991896] [2020-09-24 19:29:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:22,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:22,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:23,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-09-24 19:29:23,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:29:23,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-24 19:29:23,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-09-24 19:29:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 19:29:23,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:23,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:23,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:23,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:23,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:23,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:23,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:23,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:23,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:23,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:29:23,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:23,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 19:29:23,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:23,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:23,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:29:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:23,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:23,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:23,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 19:29:23,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:23,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:29:23,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:23,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-24 19:29:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-24 19:29:23,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897991896] [2020-09-24 19:29:23,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:23,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:29:23,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923417378] [2020-09-24 19:29:23,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:29:23,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:23,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:29:23,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:29:23,451 INFO L87 Difference]: Start difference. First operand 2065 states and 2611 transitions. Second operand 5 states. [2020-09-24 19:29:24,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:24,814 INFO L93 Difference]: Finished difference Result 4149 states and 5259 transitions. [2020-09-24 19:29:24,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:29:24,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2020-09-24 19:29:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:24,824 INFO L225 Difference]: With dead ends: 4149 [2020-09-24 19:29:24,824 INFO L226 Difference]: Without dead ends: 2099 [2020-09-24 19:29:24,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:29:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2020-09-24 19:29:24,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 1913. [2020-09-24 19:29:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1913 states. [2020-09-24 19:29:24,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 2326 transitions. [2020-09-24 19:29:24,876 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 2326 transitions. Word has length 282 [2020-09-24 19:29:24,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:24,877 INFO L479 AbstractCegarLoop]: Abstraction has 1913 states and 2326 transitions. [2020-09-24 19:29:24,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:29:24,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 2326 transitions. [2020-09-24 19:29:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-09-24 19:29:24,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:24,889 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:24,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:29:24,890 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:24,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:24,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1249610110, now seen corresponding path program 1 times [2020-09-24 19:29:24,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:24,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526625178] [2020-09-24 19:29:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:24,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:25,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:25,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-09-24 19:29:25,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 19:29:25,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:29:25,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 19:29:25,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:26,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:26,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:26,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:26,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:26,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:29:26,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 19:29:26,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:26,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:26,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:26,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:29:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:26,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 19:29:26,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:26,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:29:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-09-24 19:29:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:26,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:26,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:26,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:29:26,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:26,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-24 19:29:26,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 19:29:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:26,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 236 proven. 71 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-24 19:29:26,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526625178] [2020-09-24 19:29:26,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:26,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:26,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401978393] [2020-09-24 19:29:26,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:26,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:26,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:26,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:26,661 INFO L87 Difference]: Start difference. First operand 1913 states and 2326 transitions. Second operand 7 states. [2020-09-24 19:29:28,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:28,772 INFO L93 Difference]: Finished difference Result 3929 states and 4890 transitions. [2020-09-24 19:29:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:29:28,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2020-09-24 19:29:28,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:28,782 INFO L225 Difference]: With dead ends: 3929 [2020-09-24 19:29:28,782 INFO L226 Difference]: Without dead ends: 2031 [2020-09-24 19:29:28,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:28,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2020-09-24 19:29:28,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1773. [2020-09-24 19:29:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1773 states. [2020-09-24 19:29:28,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 2090 transitions. [2020-09-24 19:29:28,833 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 2090 transitions. Word has length 361 [2020-09-24 19:29:28,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:28,833 INFO L479 AbstractCegarLoop]: Abstraction has 1773 states and 2090 transitions. [2020-09-24 19:29:28,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:28,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 2090 transitions. [2020-09-24 19:29:28,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-09-24 19:29:28,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:28,843 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:28,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:29:28,844 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:28,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:28,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1062900369, now seen corresponding path program 1 times [2020-09-24 19:29:28,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:28,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732082854] [2020-09-24 19:29:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:28,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:29,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:29,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-09-24 19:29:29,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:29,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-09-24 19:29:29,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-24 19:29:29,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 19:29:29,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:30,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:30,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:30,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:30,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:30,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:30,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:30,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:30,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:30,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:30,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:30,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:29:30,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:30,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 19:29:30,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 19:29:30,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:29:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:30,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:30,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:30,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 19:29:30,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:30,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:29:30,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-09-24 19:29:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:30,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:30,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:30,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:29:30,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 19:29:30,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 19:29:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 238 proven. 71 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-09-24 19:29:30,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732082854] [2020-09-24 19:29:30,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:30,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:30,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389237556] [2020-09-24 19:29:30,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:30,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:30,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:30,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:30,695 INFO L87 Difference]: Start difference. First operand 1773 states and 2090 transitions. Second operand 7 states. [2020-09-24 19:29:33,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:33,014 INFO L93 Difference]: Finished difference Result 4372 states and 5170 transitions. [2020-09-24 19:29:33,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:29:33,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 378 [2020-09-24 19:29:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:33,023 INFO L225 Difference]: With dead ends: 4372 [2020-09-24 19:29:33,024 INFO L226 Difference]: Without dead ends: 2614 [2020-09-24 19:29:33,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:29:33,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2020-09-24 19:29:33,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2570. [2020-09-24 19:29:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2570 states. [2020-09-24 19:29:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 2972 transitions. [2020-09-24 19:29:33,086 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 2972 transitions. Word has length 378 [2020-09-24 19:29:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:33,087 INFO L479 AbstractCegarLoop]: Abstraction has 2570 states and 2972 transitions. [2020-09-24 19:29:33,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 2972 transitions. [2020-09-24 19:29:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-09-24 19:29:33,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:33,099 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:33,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:29:33,099 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:33,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:33,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2071387233, now seen corresponding path program 1 times [2020-09-24 19:29:33,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:33,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163023775] [2020-09-24 19:29:33,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-09-24 19:29:34,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:34,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-09-24 19:29:34,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-24 19:29:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 19:29:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:34,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:34,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:34,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:29:34,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:34,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:34,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:34,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:29:34,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:34,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 19:29:34,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 19:29:34,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:34,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:29:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:34,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:34,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 19:29:34,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:34,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:29:34,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:34,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-09-24 19:29:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:34,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:34,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:29:34,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:34,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 19:29:34,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 19:29:34,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:34,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 238 proven. 71 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-09-24 19:29:35,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163023775] [2020-09-24 19:29:35,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:35,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:35,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135610119] [2020-09-24 19:29:35,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:35,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:35,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:35,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:35,013 INFO L87 Difference]: Start difference. First operand 2570 states and 2972 transitions. Second operand 7 states. [2020-09-24 19:29:37,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:29:37,121 INFO L93 Difference]: Finished difference Result 6428 states and 7465 transitions. [2020-09-24 19:29:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:29:37,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 387 [2020-09-24 19:29:37,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:29:37,135 INFO L225 Difference]: With dead ends: 6428 [2020-09-24 19:29:37,135 INFO L226 Difference]: Without dead ends: 3873 [2020-09-24 19:29:37,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:29:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2020-09-24 19:29:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3517. [2020-09-24 19:29:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3517 states. [2020-09-24 19:29:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4077 transitions. [2020-09-24 19:29:37,216 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4077 transitions. Word has length 387 [2020-09-24 19:29:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:29:37,217 INFO L479 AbstractCegarLoop]: Abstraction has 3517 states and 4077 transitions. [2020-09-24 19:29:37,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:29:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4077 transitions. [2020-09-24 19:29:37,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-09-24 19:29:37,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:29:37,227 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:29:37,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:29:37,228 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:29:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:29:37,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1367574095, now seen corresponding path program 1 times [2020-09-24 19:29:37,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:29:37,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486618172] [2020-09-24 19:29:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:29:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:37,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:37,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-09-24 19:29:38,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:29:38,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-09-24 19:29:38,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 222 [2020-09-24 19:29:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 19:29:38,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:38,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:29:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:29:38,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:29:38,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:38,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:38,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:29:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 19:29:38,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:29:38,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:29:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:38,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:29:38,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 19:29:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:29:38,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 19:29:38,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:29:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:29:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:29:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:29:38,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-24 19:29:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:29:38,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:29:38,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:29:38,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:29:38,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:29:38,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 19:29:38,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:29:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:29:38,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:29:38,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 19:29:38,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:29:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-24 19:29:39,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486618172] [2020-09-24 19:29:39,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:29:39,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:29:39,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748075141] [2020-09-24 19:29:39,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:29:39,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:29:39,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:29:39,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:29:39,199 INFO L87 Difference]: Start difference. First operand 3517 states and 4077 transitions. Second operand 7 states.