/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:56:51,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:51,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:51,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:51,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:51,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:51,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:51,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:51,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:51,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:51,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:51,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:51,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:51,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:51,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:51,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:51,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:51,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:51,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:51,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:51,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:51,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:51,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:51,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:51,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:51,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:51,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:51,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:51,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:51,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:51,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:51,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:51,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:51,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:51,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:51,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:51,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:51,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:51,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:51,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:51,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:51,339 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:56:51,371 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:51,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:51,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:51,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:51,374 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:51,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:51,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:51,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:51,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:51,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:51,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:51,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:51,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:51,377 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:51,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:51,377 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:51,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:51,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:51,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:51,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:51,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:51,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:51,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:51,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:51,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:51,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:51,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:51,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:51,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:51,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:56:51,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:51,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:51,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:51,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:51,904 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:51,906 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 07:56:52,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/314534c96/eb4cbf4e992f448f813dfc0475feaa18/FLAG649898534 [2020-09-25 07:56:52,678 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:52,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 07:56:52,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/314534c96/eb4cbf4e992f448f813dfc0475feaa18/FLAG649898534 [2020-09-25 07:56:52,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/314534c96/eb4cbf4e992f448f813dfc0475feaa18 [2020-09-25 07:56:52,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:52,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:52,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:52,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:52,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:52,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:52" (1/1) ... [2020-09-25 07:56:52,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:52, skipping insertion in model container [2020-09-25 07:56:52,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:52" (1/1) ... [2020-09-25 07:56:52,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:52,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:53,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:53,446 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:53,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:53,659 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:53,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:53 WrapperNode [2020-09-25 07:56:53,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:53,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:53,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:53,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:53,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:53" (1/1) ... [2020-09-25 07:56:53,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:53" (1/1) ... [2020-09-25 07:56:53,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:53" (1/1) ... [2020-09-25 07:56:53,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:53" (1/1) ... [2020-09-25 07:56:53,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:53" (1/1) ... [2020-09-25 07:56:53,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:53" (1/1) ... [2020-09-25 07:56:53,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:53" (1/1) ... [2020-09-25 07:56:53,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:53,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:53,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:53,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:53,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:53,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:53,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:56:55,398 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:56:55,398 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:56:55,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:55 BoogieIcfgContainer [2020-09-25 07:56:55,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:56:55,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:56:55,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:56:55,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:56:55,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:52" (1/3) ... [2020-09-25 07:56:55,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:55, skipping insertion in model container [2020-09-25 07:56:55,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:53" (2/3) ... [2020-09-25 07:56:55,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:55, skipping insertion in model container [2020-09-25 07:56:55,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:55" (3/3) ... [2020-09-25 07:56:55,420 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-25 07:56:55,432 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:56:55,444 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:56:55,466 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:56:55,502 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:56:55,502 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:56:55,502 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:56:55,502 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:56:55,503 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:56:55,503 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:56:55,503 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:56:55,503 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:56:55,534 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:56:55,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 07:56:55,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:55,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:55,548 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:55,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:55,557 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-25 07:56:55,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:55,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67031033] [2020-09-25 07:56:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:55,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:56,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:56,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:57,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 07:56:57,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:56:57,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1247 [2020-09-25 07:56:57,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:57,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 07:56:57,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:56:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:57,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:57,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:57,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:56:57,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:57,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:57,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:57,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67031033] [2020-09-25 07:56:57,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:57,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:56:57,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338186515] [2020-09-25 07:56:57,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:56:57,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:57,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:56:57,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:56:57,422 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:56:59,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:59,684 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 07:56:59,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:56:59,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 07:56:59,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:59,710 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 07:56:59,711 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 07:56:59,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 07:56:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 07:56:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 07:56:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 07:56:59,836 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 73 [2020-09-25 07:56:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:59,837 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 07:56:59,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:56:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 07:56:59,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 07:56:59,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:59,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:59,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:56:59,848 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:59,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:59,848 INFO L82 PathProgramCache]: Analyzing trace with hash 975789152, now seen corresponding path program 1 times [2020-09-25 07:56:59,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:59,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128354563] [2020-09-25 07:56:59,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:59,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:04,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:04,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 07:57:04,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:04,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 07:57:04,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:04,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:04,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:04,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:04,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 07:57:04,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:57:05,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:05,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:05,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:05,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:05,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:57:05,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:05,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:05,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:05,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:05,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:05,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 07:57:05,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:05,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:57:05,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:05,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128354563] [2020-09-25 07:57:05,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:05,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:57:05,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982682955] [2020-09-25 07:57:05,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:05,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:05,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:05,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:05,274 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 07:57:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:07,019 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 07:57:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:57:07,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 07:57:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:07,028 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 07:57:07,028 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 07:57:07,031 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 [2020-09-25 07:57:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 07:57:07,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 07:57:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 07:57:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 07:57:07,058 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 152 [2020-09-25 07:57:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:07,060 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 07:57:07,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 07:57:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 07:57:07,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:07,069 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:07,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:57:07,070 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:07,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:07,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1429790590, now seen corresponding path program 1 times [2020-09-25 07:57:07,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:07,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811449465] [2020-09-25 07:57:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:07,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:07,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:07,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:09,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:09,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:09,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:12,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:12,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 07:57:12,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:57:12,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 07:57:12,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:12,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:12,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 07:57:12,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:57:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:12,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:12,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:12,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:12,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:57:12,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:12,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:12,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:12,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:12,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:12,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:12,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:12,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 07:57:12,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:12,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:12,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811449465] [2020-09-25 07:57:12,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:12,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:57:12,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603329644] [2020-09-25 07:57:12,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:57:12,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:12,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:57:12,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:12,525 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 07:57:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:15,445 INFO L93 Difference]: Finished difference Result 1905 states and 2481 transitions. [2020-09-25 07:57:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:57:15,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-25 07:57:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:15,457 INFO L225 Difference]: With dead ends: 1905 [2020-09-25 07:57:15,457 INFO L226 Difference]: Without dead ends: 1375 [2020-09-25 07:57:15,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:15,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-09-25 07:57:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1319. [2020-09-25 07:57:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-09-25 07:57:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1696 transitions. [2020-09-25 07:57:15,545 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1696 transitions. Word has length 162 [2020-09-25 07:57:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:15,547 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1696 transitions. [2020-09-25 07:57:15,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:57:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1696 transitions. [2020-09-25 07:57:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 07:57:15,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:15,552 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:15,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:15,553 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:15,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:15,553 INFO L82 PathProgramCache]: Analyzing trace with hash -86422342, now seen corresponding path program 1 times [2020-09-25 07:57:15,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:15,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107544400] [2020-09-25 07:57:15,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:15,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:15,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:16,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:16,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:18,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:18,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 07:57:18,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:57:18,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2838 [2020-09-25 07:57:18,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:18,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:18,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:57:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:18,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:18,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:18,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:18,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:57:18,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:18,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:18,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:18,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:18,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:18,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:57:18,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:18,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 07:57:18,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:18,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:18,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:18,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107544400] [2020-09-25 07:57:18,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:18,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:57:18,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771944232] [2020-09-25 07:57:18,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:18,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:18,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:18,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:18,795 INFO L87 Difference]: Start difference. First operand 1319 states and 1696 transitions. Second operand 8 states. [2020-09-25 07:57:21,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:21,810 INFO L93 Difference]: Finished difference Result 4211 states and 5818 transitions. [2020-09-25 07:57:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:57:21,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 164 [2020-09-25 07:57:21,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:21,830 INFO L225 Difference]: With dead ends: 4211 [2020-09-25 07:57:21,830 INFO L226 Difference]: Without dead ends: 3057 [2020-09-25 07:57:21,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:57:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2020-09-25 07:57:21,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2723. [2020-09-25 07:57:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2723 states. [2020-09-25 07:57:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3522 transitions. [2020-09-25 07:57:21,942 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3522 transitions. Word has length 164 [2020-09-25 07:57:21,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:21,943 INFO L479 AbstractCegarLoop]: Abstraction has 2723 states and 3522 transitions. [2020-09-25 07:57:21,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:57:21,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3522 transitions. [2020-09-25 07:57:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 07:57:21,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:21,952 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:21,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:21,952 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:21,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:21,953 INFO L82 PathProgramCache]: Analyzing trace with hash 383410675, now seen corresponding path program 1 times [2020-09-25 07:57:21,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:21,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807392879] [2020-09-25 07:57:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:22,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:22,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:22,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:23,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:23,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:25,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:27,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 07:57:27,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:57:27,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:27,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:57:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 07:57:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:27,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:27,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:27,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:27,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:27,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:57:27,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:27,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:27,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:27,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:27,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 07:57:27,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:27,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:27,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:27,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:27,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:57:27,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:27,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:57:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:27,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:27,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 07:57:27,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-09-25 07:57:27,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:27,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:57:27,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 122 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 07:57:28,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807392879] [2020-09-25 07:57:28,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:28,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:57:28,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664330915] [2020-09-25 07:57:28,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:57:28,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:28,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:57:28,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:57:28,086 INFO L87 Difference]: Start difference. First operand 2723 states and 3522 transitions. Second operand 9 states. [2020-09-25 07:57:32,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:32,778 INFO L93 Difference]: Finished difference Result 6108 states and 8188 transitions. [2020-09-25 07:57:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:57:32,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 244 [2020-09-25 07:57:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:32,801 INFO L225 Difference]: With dead ends: 6108 [2020-09-25 07:57:32,802 INFO L226 Difference]: Without dead ends: 3524 [2020-09-25 07:57:32,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:57:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2020-09-25 07:57:32,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 3489. [2020-09-25 07:57:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3489 states. [2020-09-25 07:57:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3489 states to 3489 states and 4486 transitions. [2020-09-25 07:57:32,923 INFO L78 Accepts]: Start accepts. Automaton has 3489 states and 4486 transitions. Word has length 244 [2020-09-25 07:57:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:32,924 INFO L479 AbstractCegarLoop]: Abstraction has 3489 states and 4486 transitions. [2020-09-25 07:57:32,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:57:32,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3489 states and 4486 transitions. [2020-09-25 07:57:32,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 07:57:32,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:32,931 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:32,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:57:32,932 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:32,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:32,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1248338468, now seen corresponding path program 1 times [2020-09-25 07:57:32,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:32,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621968526] [2020-09-25 07:57:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:35,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:37,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 07:57:37,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:57:37,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 07:57:37,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:37,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:37,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:57:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:57:37,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:38,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:38,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:38,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:38,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:57:38,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:38,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:38,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:38,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:38,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:38,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:38,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:38,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 07:57:38,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:38,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:38,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:57:38,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:38,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:57:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:38,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 07:57:38,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:38,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:38,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 122 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 07:57:38,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621968526] [2020-09-25 07:57:38,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:38,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:57:38,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099392224] [2020-09-25 07:57:38,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:57:38,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:38,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:57:38,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:57:38,774 INFO L87 Difference]: Start difference. First operand 3489 states and 4486 transitions. Second operand 9 states.