/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:29,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:29,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:29,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:29,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:29,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:29,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:29,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:29,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:29,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:29,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:29,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:29,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:29,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:29,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:29,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:29,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:29,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:29,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:29,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:29,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:29,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:29,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:29,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:29,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:29,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:29,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:29,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:29,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:29,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:29,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:29,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:29,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:29,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:29,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:29,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:29,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:29,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:29,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:29,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:29,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:29,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:35:29,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:29,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:29,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:29,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:29,590 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:29,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:29,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:29,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:29,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:29,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:29,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:29,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:29,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:29,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:29,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:29,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:29,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:29,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:29,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:29,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:29,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:29,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:29,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:29,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:29,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:29,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:29,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:29,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:29,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:29,596 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:35:30,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:30,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:30,099 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:30,100 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:30,101 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:30,102 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 13:35:30,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f587b9db8/025331970954461c8caa25521e8de2c3/FLAG7a1481dbe [2020-09-25 13:35:30,965 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:30,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 13:35:30,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f587b9db8/025331970954461c8caa25521e8de2c3/FLAG7a1481dbe [2020-09-25 13:35:31,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f587b9db8/025331970954461c8caa25521e8de2c3 [2020-09-25 13:35:31,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:31,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:31,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:31,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:31,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:31,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:31" (1/1) ... [2020-09-25 13:35:31,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9dbf34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:31, skipping insertion in model container [2020-09-25 13:35:31,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:31" (1/1) ... [2020-09-25 13:35:31,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:31,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:32,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:32,012 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:32,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:32,288 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:32,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:32 WrapperNode [2020-09-25 13:35:32,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:32,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:32,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:32,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:32,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:32" (1/1) ... [2020-09-25 13:35:32,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:32" (1/1) ... [2020-09-25 13:35:32,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:32" (1/1) ... [2020-09-25 13:35:32,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:32" (1/1) ... [2020-09-25 13:35:32,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:32" (1/1) ... [2020-09-25 13:35:32,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:32" (1/1) ... [2020-09-25 13:35:32,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:32" (1/1) ... [2020-09-25 13:35:32,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:32,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:32,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:32,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:32,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:32,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:32,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:32,583 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:32,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:32,583 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:32,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:32,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:32,585 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:32,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:32,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:32,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:35,042 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:35,043 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:35,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:35 BoogieIcfgContainer [2020-09-25 13:35:35,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:35,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:35,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:35,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:35,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:31" (1/3) ... [2020-09-25 13:35:35,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa91991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:35, skipping insertion in model container [2020-09-25 13:35:35,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:32" (2/3) ... [2020-09-25 13:35:35,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa91991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:35, skipping insertion in model container [2020-09-25 13:35:35,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:35" (3/3) ... [2020-09-25 13:35:35,067 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label36.c [2020-09-25 13:35:35,081 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:35,094 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:35,119 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:35,160 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:35,160 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:35,161 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:35,161 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:35,161 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:35,161 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:35,161 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:35,161 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:35,200 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 13:35:35,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 13:35:35,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:35,212 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] [2020-09-25 13:35:35,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:35,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1149620956, now seen corresponding path program 1 times [2020-09-25 13:35:35,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:35,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46981147] [2020-09-25 13:35:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:36,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 13:35:36,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:35:36,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-09-25 13:35:36,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:36,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:36,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:36,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:35:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:35:36,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:35:36,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:36,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:36,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:35:36,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 13:35:36,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:36,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:35:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:36,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:36,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46981147] [2020-09-25 13:35:36,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:36,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:35:36,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950982420] [2020-09-25 13:35:36,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:35:36,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:36,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:35:36,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:35:36,461 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 13:35:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:40,423 INFO L93 Difference]: Finished difference Result 1957 states and 2552 transitions. [2020-09-25 13:35:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:35:40,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-25 13:35:40,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:40,454 INFO L225 Difference]: With dead ends: 1957 [2020-09-25 13:35:40,454 INFO L226 Difference]: Without dead ends: 1087 [2020-09-25 13:35:40,466 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 [2020-09-25 13:35:40,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-09-25 13:35:40,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1039. [2020-09-25 13:35:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 13:35:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1227 transitions. [2020-09-25 13:35:40,617 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1227 transitions. Word has length 34 [2020-09-25 13:35:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:40,618 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1227 transitions. [2020-09-25 13:35:40,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:35:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1227 transitions. [2020-09-25 13:35:40,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 13:35:40,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:40,625 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:35:40,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:40,626 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:40,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:40,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1328266352, now seen corresponding path program 1 times [2020-09-25 13:35:40,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:40,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486551528] [2020-09-25 13:35:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:40,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:40,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:43,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:43,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 13:35:43,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:35:43,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2683 [2020-09-25 13:35:43,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:43,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:35:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 13:35:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:43,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:43,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:43,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:43,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:35:43,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:35:43,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:43,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:43,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:43,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:35:43,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:43,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:35:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:43,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:43,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:43,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:35:43,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:43,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 13:35:43,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:43,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:35:43,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:43,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486551528] [2020-09-25 13:35:43,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:43,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:43,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245737340] [2020-09-25 13:35:43,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:43,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:43,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:43,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:43,853 INFO L87 Difference]: Start difference. First operand 1039 states and 1227 transitions. Second operand 7 states. [2020-09-25 13:35:48,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:48,777 INFO L93 Difference]: Finished difference Result 2751 states and 3333 transitions. [2020-09-25 13:35:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:48,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-09-25 13:35:48,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:48,788 INFO L225 Difference]: With dead ends: 2751 [2020-09-25 13:35:48,788 INFO L226 Difference]: Without dead ends: 1729 [2020-09-25 13:35:48,792 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 [2020-09-25 13:35:48,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2020-09-25 13:35:48,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1444. [2020-09-25 13:35:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-09-25 13:35:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1752 transitions. [2020-09-25 13:35:48,843 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1752 transitions. Word has length 116 [2020-09-25 13:35:48,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:48,844 INFO L479 AbstractCegarLoop]: Abstraction has 1444 states and 1752 transitions. [2020-09-25 13:35:48,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1752 transitions. [2020-09-25 13:35:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 13:35:48,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:48,848 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:35:48,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:48,848 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:48,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:48,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2011577567, now seen corresponding path program 1 times [2020-09-25 13:35:48,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:48,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754311837] [2020-09-25 13:35:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:53,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 13:35:53,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:35:53,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:53,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:35:53,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 13:35:53,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:53,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:53,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:54,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:54,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:35:54,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:54,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:35:54,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:54,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:35:54,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:54,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:35:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:54,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:54,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:54,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 13:35:54,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:54,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 13:35:54,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:54,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:35:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:54,309 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:54,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754311837] [2020-09-25 13:35:54,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:54,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:54,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638604658] [2020-09-25 13:35:54,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:54,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:54,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:54,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:54,311 INFO L87 Difference]: Start difference. First operand 1444 states and 1752 transitions. Second operand 7 states. [2020-09-25 13:35:58,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:58,853 INFO L93 Difference]: Finished difference Result 3573 states and 4382 transitions. [2020-09-25 13:35:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:58,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-09-25 13:35:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:58,867 INFO L225 Difference]: With dead ends: 3573 [2020-09-25 13:35:58,867 INFO L226 Difference]: Without dead ends: 2146 [2020-09-25 13:35:58,873 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 [2020-09-25 13:35:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2020-09-25 13:35:58,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1902. [2020-09-25 13:35:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1902 states. [2020-09-25 13:35:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2322 transitions. [2020-09-25 13:35:58,950 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2322 transitions. Word has length 119 [2020-09-25 13:35:58,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:58,954 INFO L479 AbstractCegarLoop]: Abstraction has 1902 states and 2322 transitions. [2020-09-25 13:35:58,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:58,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2322 transitions. [2020-09-25 13:35:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 13:35:58,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:58,965 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:35:58,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:58,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:58,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:58,966 INFO L82 PathProgramCache]: Analyzing trace with hash 598873241, now seen corresponding path program 1 times [2020-09-25 13:35:58,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:58,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515450411] [2020-09-25 13:35:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:59,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:00,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:02,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:02,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 13:36:02,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:36:02,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3957 [2020-09-25 13:36:02,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:02,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:02,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:36:02,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 13:36:02,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:03,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:36:03,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:03,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:36:03,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:03,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:03,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:36:03,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:03,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:36:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:36:03,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 13:36:03,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:03,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:36:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:03,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515450411] [2020-09-25 13:36:03,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:03,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:36:03,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117005772] [2020-09-25 13:36:03,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:36:03,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:03,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:36:03,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:36:03,360 INFO L87 Difference]: Start difference. First operand 1902 states and 2322 transitions. Second operand 7 states. [2020-09-25 13:36:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:06,346 INFO L93 Difference]: Finished difference Result 4264 states and 5251 transitions. [2020-09-25 13:36:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:36:06,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-09-25 13:36:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:06,362 INFO L225 Difference]: With dead ends: 4264 [2020-09-25 13:36:06,363 INFO L226 Difference]: Without dead ends: 2379 [2020-09-25 13:36:06,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:36:06,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2020-09-25 13:36:06,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2324. [2020-09-25 13:36:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2324 states. [2020-09-25 13:36:06,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 2813 transitions. [2020-09-25 13:36:06,437 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 2813 transitions. Word has length 123 [2020-09-25 13:36:06,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:06,438 INFO L479 AbstractCegarLoop]: Abstraction has 2324 states and 2813 transitions. [2020-09-25 13:36:06,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:36:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 2813 transitions. [2020-09-25 13:36:06,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 13:36:06,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:06,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:36:06,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:36:06,441 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:06,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:06,442 INFO L82 PathProgramCache]: Analyzing trace with hash -157424678, now seen corresponding path program 1 times [2020-09-25 13:36:06,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:06,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828769526] [2020-09-25 13:36:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:06,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:08,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 13:36:08,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:36:08,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2090 [2020-09-25 13:36:08,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:08,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:36:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:36:08,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 13:36:08,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:08,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:08,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:36:08,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:08,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:36:08,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:08,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:36:08,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:08,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:36:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:08,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:08,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 13:36:08,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:08,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 13:36:08,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:08,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:36:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:08,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 13:36:08,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:09,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828769526] [2020-09-25 13:36:09,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:09,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:36:09,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369763672] [2020-09-25 13:36:09,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:36:09,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:09,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:36:09,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:36:09,212 INFO L87 Difference]: Start difference. First operand 2324 states and 2813 transitions. Second operand 8 states. [2020-09-25 13:36:15,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:15,431 INFO L93 Difference]: Finished difference Result 5854 states and 7299 transitions. [2020-09-25 13:36:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:36:15,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2020-09-25 13:36:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:15,452 INFO L225 Difference]: With dead ends: 5854 [2020-09-25 13:36:15,452 INFO L226 Difference]: Without dead ends: 3941 [2020-09-25 13:36:15,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:36:15,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2020-09-25 13:36:15,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3746. [2020-09-25 13:36:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3746 states. [2020-09-25 13:36:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 4530 transitions. [2020-09-25 13:36:15,577 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 4530 transitions. Word has length 175 [2020-09-25 13:36:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:15,579 INFO L479 AbstractCegarLoop]: Abstraction has 3746 states and 4530 transitions. [2020-09-25 13:36:15,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:36:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 4530 transitions. [2020-09-25 13:36:15,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 13:36:15,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:15,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:36:15,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:36:15,585 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:15,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:15,585 INFO L82 PathProgramCache]: Analyzing trace with hash -485643698, now seen corresponding path program 1 times [2020-09-25 13:36:15,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:15,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967106218] [2020-09-25 13:36:15,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:17,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:17,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:18,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking...