/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=1.0 --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 09:06:35,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:35,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:35,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:35,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:35,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:35,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:35,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:35,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:35,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:35,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:35,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:35,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:35,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:35,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:35,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:35,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:35,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:35,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:35,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:35,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:35,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:35,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:35,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:35,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:35,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:35,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:35,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:35,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:35,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:35,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:35,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:35,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:35,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:35,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:35,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:35,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:35,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:35,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:35,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:35,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:35,585 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 09:06:35,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:35,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:35,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:35,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:35,629 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:35,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:35,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:35,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:35,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:35,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:35,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:35,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:35,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:35,633 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:35,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:35,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:35,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:35,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:35,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:35,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:35,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:35,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:35,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:35,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:35,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:35,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:35,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:35,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:35,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:35,636 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:06:36,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:36,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:36,171 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:36,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:36,174 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:36,175 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 09:06:36,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5548be154/365a1747ee6b4c7e8fa3c8e9df5eb156/FLAG69847e49a [2020-09-25 09:06:36,990 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:36,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label36.c [2020-09-25 09:06:37,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5548be154/365a1747ee6b4c7e8fa3c8e9df5eb156/FLAG69847e49a [2020-09-25 09:06:37,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5548be154/365a1747ee6b4c7e8fa3c8e9df5eb156 [2020-09-25 09:06:37,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:37,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:37,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:37,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:37,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:37,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:37" (1/1) ... [2020-09-25 09:06:37,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a5289c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:37, skipping insertion in model container [2020-09-25 09:06:37,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:37" (1/1) ... [2020-09-25 09:06:37,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:37,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:37,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:38,008 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:38,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:38,248 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:38,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38 WrapperNode [2020-09-25 09:06:38,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:38,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:38,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:38,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:38,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (1/1) ... [2020-09-25 09:06:38,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:38,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:38,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:38,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:38,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (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 09:06:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:38,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:38,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:38,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:38,564 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:38,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:38,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:38,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:40,974 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:40,974 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:40,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:40 BoogieIcfgContainer [2020-09-25 09:06:40,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:40,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:40,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:40,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:40,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:37" (1/3) ... [2020-09-25 09:06:40,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446d4e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:40, skipping insertion in model container [2020-09-25 09:06:40,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:38" (2/3) ... [2020-09-25 09:06:40,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446d4e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:40, skipping insertion in model container [2020-09-25 09:06:40,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:40" (3/3) ... [2020-09-25 09:06:41,000 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label36.c [2020-09-25 09:06:41,014 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:41,025 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:41,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:41,086 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:41,086 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:41,086 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:41,087 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:41,087 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:41,087 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:41,087 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:41,087 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 09:06:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 09:06:41,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:41,136 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 09:06:41,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:41,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:41,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1149620956, now seen corresponding path program 1 times [2020-09-25 09:06:41,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:41,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517089170] [2020-09-25 09:06:41,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:41,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:42,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 09:06:42,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:42,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-09-25 09:06:42,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:42,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:06:42,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:06:42,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:42,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:42,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:06:42,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:42,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:06:42,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:42,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:42,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:42,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:42,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:42,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:42,464 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 09:06:42,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517089170] [2020-09-25 09:06:42,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:42,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:06:42,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492994592] [2020-09-25 09:06:42,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:06:42,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:42,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:06:42,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:42,499 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 09:06:47,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:47,744 INFO L93 Difference]: Finished difference Result 2231 states and 3021 transitions. [2020-09-25 09:06:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:06:47,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-25 09:06:47,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:47,778 INFO L225 Difference]: With dead ends: 2231 [2020-09-25 09:06:47,779 INFO L226 Difference]: Without dead ends: 1325 [2020-09-25 09:06:47,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:47,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-09-25 09:06:47,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 997. [2020-09-25 09:06:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 09:06:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2020-09-25 09:06:47,930 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 34 [2020-09-25 09:06:47,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:47,931 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2020-09-25 09:06:47,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:06:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2020-09-25 09:06:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 09:06:47,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:47,938 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 09:06:47,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:47,939 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:47,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:47,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1328266352, now seen corresponding path program 1 times [2020-09-25 09:06:47,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:47,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99375281] [2020-09-25 09:06:47,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:48,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:50,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:50,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 09:06:50,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:06:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2920 [2020-09-25 09:06:50,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:50,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:50,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 09:06:50,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 09:06:50,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:51,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:51,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:51,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:06:51,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:51,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:06:51,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:51,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:51,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:06:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:51,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:06:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:51,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:51,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:51,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:06:51,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:51,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 09:06:51,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:51,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:06:51,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:51,453 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 09:06:51,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99375281] [2020-09-25 09:06:51,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:51,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:06:51,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790946829] [2020-09-25 09:06:51,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:51,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:51,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:51,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:51,459 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 7 states. [2020-09-25 09:06:55,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:55,847 INFO L93 Difference]: Finished difference Result 2663 states and 3253 transitions. [2020-09-25 09:06:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:06:55,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-09-25 09:06:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:55,859 INFO L225 Difference]: With dead ends: 2663 [2020-09-25 09:06:55,860 INFO L226 Difference]: Without dead ends: 1683 [2020-09-25 09:06:55,866 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 09:06:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2020-09-25 09:06:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1400. [2020-09-25 09:06:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1400 states. [2020-09-25 09:06:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1710 transitions. [2020-09-25 09:06:55,927 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1710 transitions. Word has length 116 [2020-09-25 09:06:55,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:55,930 INFO L479 AbstractCegarLoop]: Abstraction has 1400 states and 1710 transitions. [2020-09-25 09:06:55,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1710 transitions. [2020-09-25 09:06:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 09:06:55,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:55,942 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 09:06:55,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:55,942 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:55,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:55,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2011577567, now seen corresponding path program 1 times [2020-09-25 09:06:55,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:55,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282786895] [2020-09-25 09:06:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:58,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:00,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:00,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 09:07:00,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:07:00,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:07:00,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:00,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:07:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:07:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:07:00,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:01,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:01,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:01,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:01,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:07:01,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:01,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 09:07:01,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:01,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:07:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:07:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:01,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:07:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:01,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:01,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:01,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 09:07:01,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:01,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 09:07:01,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:01,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:01,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 09:07:01,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:07:01,726 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 09:07:01,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282786895] [2020-09-25 09:07:01,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:07:01,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:07:01,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526869138] [2020-09-25 09:07:01,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:07:01,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:01,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:07:01,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:01,733 INFO L87 Difference]: Start difference. First operand 1400 states and 1710 transitions. Second operand 8 states. [2020-09-25 09:07:06,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:06,109 INFO L93 Difference]: Finished difference Result 2765 states and 3396 transitions. [2020-09-25 09:07:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:07:06,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 119 [2020-09-25 09:07:06,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:06,118 INFO L225 Difference]: With dead ends: 2765 [2020-09-25 09:07:06,118 INFO L226 Difference]: Without dead ends: 1382 [2020-09-25 09:07:06,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:07:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2020-09-25 09:07:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1356. [2020-09-25 09:07:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2020-09-25 09:07:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1598 transitions. [2020-09-25 09:07:06,165 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1598 transitions. Word has length 119 [2020-09-25 09:07:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:06,171 INFO L479 AbstractCegarLoop]: Abstraction has 1356 states and 1598 transitions. [2020-09-25 09:07:06,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:07:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1598 transitions. [2020-09-25 09:07:06,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 09:07:06,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:06,174 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] [2020-09-25 09:07:06,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:07:06,175 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:06,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:06,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1403558871, now seen corresponding path program 1 times [2020-09-25 09:07:06,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:06,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461132995] [2020-09-25 09:07:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:06,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:06,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:06,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:06,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:10,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 09:07:10,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:07:10,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4657 [2020-09-25 09:07:10,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:10,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:07:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:07:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 09:07:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:10,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:10,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:10,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:07:10,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:10,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:07:10,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:10,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:10,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:10,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:10,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:07:10,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:11,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:07:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:11,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:11,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:11,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 09:07:11,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:11,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 09:07:11,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:11,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:11,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 09:07:11,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:11,610 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:07:11,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461132995] [2020-09-25 09:07:11,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:11,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:07:11,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729930911] [2020-09-25 09:07:11,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:07:11,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:11,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:07:11,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:07:11,614 INFO L87 Difference]: Start difference. First operand 1356 states and 1598 transitions. Second operand 7 states. [2020-09-25 09:07:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:16,872 INFO L93 Difference]: Finished difference Result 3375 states and 4300 transitions. [2020-09-25 09:07:16,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:07:16,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-09-25 09:07:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:16,885 INFO L225 Difference]: With dead ends: 3375 [2020-09-25 09:07:16,885 INFO L226 Difference]: Without dead ends: 2430 [2020-09-25 09:07:16,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:07:16,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2020-09-25 09:07:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2327. [2020-09-25 09:07:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2327 states. [2020-09-25 09:07:16,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 2766 transitions. [2020-09-25 09:07:16,955 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 2766 transitions. Word has length 159 [2020-09-25 09:07:16,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:16,956 INFO L479 AbstractCegarLoop]: Abstraction has 2327 states and 2766 transitions. [2020-09-25 09:07:16,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:07:16,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 2766 transitions. [2020-09-25 09:07:16,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 09:07:16,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:16,959 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 09:07:16,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:07:16,960 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:16,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:16,960 INFO L82 PathProgramCache]: Analyzing trace with hash -157424678, now seen corresponding path program 1 times [2020-09-25 09:07:16,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:16,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820161867] [2020-09-25 09:07:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:17,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:17,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:17,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:19,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:19,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 09:07:19,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:07:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2083 [2020-09-25 09:07:19,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:19,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 09:07:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:07:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:19,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:19,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:19,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:19,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:07:19,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:19,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:07:19,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:19,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:19,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:19,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:19,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 09:07:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:19,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:19,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:19,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 09:07:19,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 09:07:19,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:19,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:19,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 09:07:19,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:19,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820161867] [2020-09-25 09:07:19,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:19,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:07:19,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302533362] [2020-09-25 09:07:19,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:07:19,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:19,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:07:19,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:07:19,506 INFO L87 Difference]: Start difference. First operand 2327 states and 2766 transitions. Second operand 5 states. [2020-09-25 09:07:23,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:23,331 INFO L93 Difference]: Finished difference Result 5555 states and 6906 transitions. [2020-09-25 09:07:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:07:23,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 09:07:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:23,357 INFO L225 Difference]: With dead ends: 5555 [2020-09-25 09:07:23,357 INFO L226 Difference]: Without dead ends: 3639 [2020-09-25 09:07:23,364 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 09:07:23,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2020-09-25 09:07:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3591. [2020-09-25 09:07:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3591 states. [2020-09-25 09:07:23,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 4443 transitions. [2020-09-25 09:07:23,482 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 4443 transitions. Word has length 175 [2020-09-25 09:07:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:23,483 INFO L479 AbstractCegarLoop]: Abstraction has 3591 states and 4443 transitions. [2020-09-25 09:07:23,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:07:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 4443 transitions. [2020-09-25 09:07:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 09:07:23,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:23,490 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 09:07:23,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:07:23,490 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:23,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:23,491 INFO L82 PathProgramCache]: Analyzing trace with hash -485643698, now seen corresponding path program 1 times [2020-09-25 09:07:23,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:23,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847032551] [2020-09-25 09:07:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:23,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:23,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking...