/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:20:59,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:20:59,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:20:59,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:20:59,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:20:59,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:20:59,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:20:59,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:20:59,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:20:59,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:20:59,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:20:59,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:20:59,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:20:59,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:20:59,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:20:59,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:20:59,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:20:59,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:20:59,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:20:59,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:20:59,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:20:59,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:20:59,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:20:59,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:20:59,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:20:59,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:20:59,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:20:59,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:20:59,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:20:59,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:20:59,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:20:59,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:20:59,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:20:59,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:20:59,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:20:59,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:20:59,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:20:59,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:20:59,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:20:59,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:20:59,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:20:59,708 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 12:20:59,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:20:59,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:20:59,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:20:59,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:20:59,753 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:20:59,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:20:59,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:20:59,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:20:59,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:20:59,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:20:59,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:20:59,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:20:59,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:20:59,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:20:59,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:20:59,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:20:59,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:20:59,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:20:59,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:20:59,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:20:59,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:20:59,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:59,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:20:59,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:20:59,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:20:59,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:20:59,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:20:59,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:20:59,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:20:59,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:21:00,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:00,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:00,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:00,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:00,261 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:00,262 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 12:21:00,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99dcf172d/fa5a9d817d9b41ccb863069e2c662ea9/FLAGc2b39730b [2020-09-25 12:21:01,044 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:01,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 12:21:01,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99dcf172d/fa5a9d817d9b41ccb863069e2c662ea9/FLAGc2b39730b [2020-09-25 12:21:01,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99dcf172d/fa5a9d817d9b41ccb863069e2c662ea9 [2020-09-25 12:21:01,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:01,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:01,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:01,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:01,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:01,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:01" (1/1) ... [2020-09-25 12:21:01,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790fb128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:01, skipping insertion in model container [2020-09-25 12:21:01,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:01" (1/1) ... [2020-09-25 12:21:01,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:01,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:01,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:01,802 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:02,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:02,054 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:02,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02 WrapperNode [2020-09-25 12:21:02,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:02,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:02,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:02,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:02,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (1/1) ... [2020-09-25 12:21:02,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:02,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:02,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:02,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:02,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (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 12:21:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:02,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:02,254 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:02,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:03,677 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:03,677 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:03,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:03 BoogieIcfgContainer [2020-09-25 12:21:03,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:03,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:03,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:03,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:03,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:01" (1/3) ... [2020-09-25 12:21:03,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6289e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:03, skipping insertion in model container [2020-09-25 12:21:03,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:02" (2/3) ... [2020-09-25 12:21:03,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6289e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:03, skipping insertion in model container [2020-09-25 12:21:03,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:03" (3/3) ... [2020-09-25 12:21:03,701 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-25 12:21:03,713 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:03,730 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:03,753 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:03,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:03,799 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:03,800 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:03,800 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:03,800 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:03,800 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:03,800 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:03,800 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:03,836 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:03,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 12:21:03,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:03,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:03,872 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:03,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:03,880 INFO L82 PathProgramCache]: Analyzing trace with hash 576098423, now seen corresponding path program 1 times [2020-09-25 12:21:03,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:03,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282248083] [2020-09-25 12:21:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:04,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:06,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:09,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:21:09,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:21:09,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:21:09,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:09,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:21:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 12:21:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:21:09,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:09,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:09,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:09,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 12:21:09,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:09,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:21:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:09,519 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 12:21:09,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282248083] [2020-09-25 12:21:09,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:09,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:21:09,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993322306] [2020-09-25 12:21:09,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:21:09,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:09,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:21:09,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:21:09,556 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:21:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:11,714 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 12:21:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:11,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 12:21:11,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:11,760 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 12:21:11,760 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 12:21:11,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:11,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 12:21:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 12:21:11,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:21:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 12:21:11,873 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 122 [2020-09-25 12:21:11,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:11,875 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 12:21:11,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:21:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 12:21:11,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 12:21:11,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:11,883 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:21:11,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:11,884 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:11,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:11,884 INFO L82 PathProgramCache]: Analyzing trace with hash -329610872, now seen corresponding path program 1 times [2020-09-25 12:21:11,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:11,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287131601] [2020-09-25 12:21:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:11,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:13,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 12:21:13,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:21:13,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1990 [2020-09-25 12:21:13,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:13,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:13,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:13,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 12:21:13,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 12:21:13,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:14,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:14,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:14,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:14,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:14,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:21:14,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:14,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:14,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:14,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:14,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:14,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:14,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:14,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:14,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:21:14,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:14,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:14,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:14,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:14,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:21:14,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:14,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287131601] [2020-09-25 12:21:14,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:14,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:14,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599985294] [2020-09-25 12:21:14,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:14,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:14,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:14,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:14,293 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 12:21:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:16,476 INFO L93 Difference]: Finished difference Result 1526 states and 1895 transitions. [2020-09-25 12:21:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:16,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-25 12:21:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:16,483 INFO L225 Difference]: With dead ends: 1526 [2020-09-25 12:21:16,483 INFO L226 Difference]: Without dead ends: 947 [2020-09-25 12:21:16,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:16,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-09-25 12:21:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 891. [2020-09-25 12:21:16,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 12:21:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-25 12:21:16,534 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 143 [2020-09-25 12:21:16,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:16,535 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-25 12:21:16,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:16,535 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-25 12:21:16,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 12:21:16,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:16,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:16,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:16,542 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:16,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:16,543 INFO L82 PathProgramCache]: Analyzing trace with hash -598927294, now seen corresponding path program 1 times [2020-09-25 12:21:16,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:16,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432711140] [2020-09-25 12:21:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:16,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:16,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:18,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:18,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:21,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 12:21:21,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:21:21,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 12:21:21,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:21,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:21:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 12:21:21,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:21,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:21,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:21,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:21,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:21,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:21:21,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:21,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:21,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:21:21,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:21,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:21,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:21,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 12:21:21,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:21,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:21,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:21:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:21,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:21:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:22,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:22,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:21:22,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 12:21:22,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:22,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:22,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:21:22,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:21:22,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432711140] [2020-09-25 12:21:22,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:22,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:21:22,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94970089] [2020-09-25 12:21:22,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:21:22,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:22,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:21:22,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:21:22,355 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 8 states. [2020-09-25 12:21:24,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:24,566 INFO L93 Difference]: Finished difference Result 2144 states and 2702 transitions. [2020-09-25 12:21:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:21:24,567 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-09-25 12:21:24,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:24,581 INFO L225 Difference]: With dead ends: 2144 [2020-09-25 12:21:24,581 INFO L226 Difference]: Without dead ends: 1277 [2020-09-25 12:21:24,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:21:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-25 12:21:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1077. [2020-09-25 12:21:24,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-25 12:21:24,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-25 12:21:24,656 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 184 [2020-09-25 12:21:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:24,665 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-25 12:21:24,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:21:24,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-25 12:21:24,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 12:21:24,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:24,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:24,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:24,674 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:24,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:24,674 INFO L82 PathProgramCache]: Analyzing trace with hash 135215777, now seen corresponding path program 1 times [2020-09-25 12:21:24,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:24,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109559224] [2020-09-25 12:21:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:24,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:29,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:29,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 12:21:29,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:21:29,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:21:29,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:29,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:29,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:21:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:21:29,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 12:21:29,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:30,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:30,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:30,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:30,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:30,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:21:30,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:30,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:30,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:21:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:30,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:30,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:30,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:21:30,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:30,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 12:21:30,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:30,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:30,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:21:30,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:30,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:21:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:21:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:30,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:21:30,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 12:21:30,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:30,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:21:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:21:30,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 51 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:21:31,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109559224] [2020-09-25 12:21:31,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:31,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 12:21:31,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92415196] [2020-09-25 12:21:31,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 12:21:31,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:31,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 12:21:31,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:21:31,446 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 22 states. [2020-09-25 12:21:31,813 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-09-25 12:21:32,920 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-09-25 12:21:33,400 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-25 12:21:33,652 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-09-25 12:21:33,988 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-09-25 12:21:35,054 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-09-25 12:21:35,994 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-09-25 12:21:36,299 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-09-25 12:21:37,557 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-09-25 12:21:38,175 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 12:21:38,713 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-09-25 12:21:39,604 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-09-25 12:21:40,060 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-09-25 12:21:40,334 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-09-25 12:21:41,198 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2020-09-25 12:21:41,538 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2020-09-25 12:21:42,424 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-09-25 12:21:42,924 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-09-25 12:21:43,300 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 12:21:43,566 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-09-25 12:21:44,427 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-09-25 12:21:44,904 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-09-25 12:21:46,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:46,682 INFO L93 Difference]: Finished difference Result 3817 states and 4970 transitions. [2020-09-25 12:21:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-25 12:21:46,683 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 191 [2020-09-25 12:21:46,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:46,698 INFO L225 Difference]: With dead ends: 3817 [2020-09-25 12:21:46,699 INFO L226 Difference]: Without dead ends: 2764 [2020-09-25 12:21:46,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1353, Invalid=2937, Unknown=0, NotChecked=0, Total=4290 [2020-09-25 12:21:46,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2020-09-25 12:21:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2072. [2020-09-25 12:21:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2072 states. [2020-09-25 12:21:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 2451 transitions. [2020-09-25 12:21:46,796 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 2451 transitions. Word has length 191 [2020-09-25 12:21:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:46,797 INFO L479 AbstractCegarLoop]: Abstraction has 2072 states and 2451 transitions. [2020-09-25 12:21:46,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 12:21:46,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 2451 transitions. [2020-09-25 12:21:46,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 12:21:46,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:46,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:46,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:21:46,810 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:46,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1373642846, now seen corresponding path program 1 times [2020-09-25 12:21:46,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:46,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556755057] [2020-09-25 12:21:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:46,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking...