/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=0.5 --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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:26,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:26,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:26,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:26,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:26,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:26,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:26,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:26,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:26,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:26,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:26,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:26,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:26,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:26,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:26,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:26,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:26,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:26,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:26,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:26,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:26,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:26,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:26,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:26,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:26,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:26,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:26,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:26,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:26,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:26,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:26,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:26,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:26,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:26,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:26,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:26,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:26,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:26,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:26,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:26,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:26,086 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 14:36:26,112 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:26,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:26,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:26,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:26,114 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:26,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:26,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:26,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:26,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:26,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:26,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:26,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:26,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:26,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:26,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:26,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:26,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:26,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:26,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:26,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:26,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:26,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:26,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:26,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:26,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:26,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:26,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:26,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:26,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:26,119 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:36:26,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:26,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:26,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:26,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:26,642 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:26,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 14:36:26,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7532633d/bcafc86db4a24e5586231b2b397c0598/FLAG3b300c047 [2020-09-25 14:36:27,416 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:27,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 14:36:27,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7532633d/bcafc86db4a24e5586231b2b397c0598/FLAG3b300c047 [2020-09-25 14:36:27,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7532633d/bcafc86db4a24e5586231b2b397c0598 [2020-09-25 14:36:27,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:27,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:27,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:27,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:27,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:27,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:27" (1/1) ... [2020-09-25 14:36:27,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfcebea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:27, skipping insertion in model container [2020-09-25 14:36:27,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:27" (1/1) ... [2020-09-25 14:36:27,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:27,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:28,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:28,355 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:28,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:28,472 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:28,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:28 WrapperNode [2020-09-25 14:36:28,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:28,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:28,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:28,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:28,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:28" (1/1) ... [2020-09-25 14:36:28,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:28" (1/1) ... [2020-09-25 14:36:28,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:28" (1/1) ... [2020-09-25 14:36:28,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:28" (1/1) ... [2020-09-25 14:36:28,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:28" (1/1) ... [2020-09-25 14:36:28,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:28" (1/1) ... [2020-09-25 14:36:28,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:28" (1/1) ... [2020-09-25 14:36:28,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:28,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:28,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:28,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:28,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:28" (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 14:36:28,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:36:28,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:28,699 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:36:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:36:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:28,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:28,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:30,006 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:30,007 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:36:30,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:30 BoogieIcfgContainer [2020-09-25 14:36:30,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:30,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:30,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:30,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:30,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:27" (1/3) ... [2020-09-25 14:36:30,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4d2dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:30, skipping insertion in model container [2020-09-25 14:36:30,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:28" (2/3) ... [2020-09-25 14:36:30,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4d2dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:30, skipping insertion in model container [2020-09-25 14:36:30,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:30" (3/3) ... [2020-09-25 14:36:30,032 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-09-25 14:36:30,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:30,063 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:30,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:30,135 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:30,136 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:30,136 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:30,136 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:30,136 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:30,137 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:30,137 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:30,137 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:30,184 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:36:30,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 14:36:30,211 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:30,213 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, 1, 1, 1, 1, 1, 1, 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 14:36:30,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:30,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:30,220 INFO L82 PathProgramCache]: Analyzing trace with hash 730138415, now seen corresponding path program 1 times [2020-09-25 14:36:30,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:30,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128087347] [2020-09-25 14:36:30,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:35,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 14:36:35,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:36:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:36:35,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:35,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:36:35,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 14:36:35,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 14:36:35,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:35,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:35,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:35,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:35,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:36:35,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:35,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:35,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:35,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:35,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:36:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:35,875 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 14:36:35,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128087347] [2020-09-25 14:36:35,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:35,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:36:35,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855115121] [2020-09-25 14:36:35,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:36:35,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:35,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:36:35,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:36:35,910 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:36:37,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:37,922 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 14:36:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:36:37,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-25 14:36:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:37,963 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 14:36:37,963 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 14:36:37,973 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 14:36:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 14:36:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 14:36:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:36:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 14:36:38,115 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 152 [2020-09-25 14:36:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:38,116 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 14:36:38,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:36:38,119 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 14:36:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 14:36:38,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:38,132 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, 1, 1, 1, 1, 1, 1, 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 14:36:38,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:36:38,134 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:38,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1669034880, now seen corresponding path program 1 times [2020-09-25 14:36:38,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:38,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133000428] [2020-09-25 14:36:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:39,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:41,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:43,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:43,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 14:36:43,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:36:43,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:36:43,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:43,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:36:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 14:36:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 14:36:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 14:36:43,816 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2020-09-25 14:36:43,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:43,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:43,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:43,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:43,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:36:43,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:43,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:43,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:43,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 14:36:43,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:36:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:43,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:44,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:44,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:36:44,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 14:36:44,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:44,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:36:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:44,354 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 14:36:44,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133000428] [2020-09-25 14:36:44,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:44,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:36:44,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580794722] [2020-09-25 14:36:44,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:36:44,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:44,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:36:44,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:44,362 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 9 states. [2020-09-25 14:36:48,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:48,348 INFO L93 Difference]: Finished difference Result 1761 states and 2279 transitions. [2020-09-25 14:36:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:36:48,349 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 173 [2020-09-25 14:36:48,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:48,358 INFO L225 Difference]: With dead ends: 1761 [2020-09-25 14:36:48,358 INFO L226 Difference]: Without dead ends: 887 [2020-09-25 14:36:48,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:36:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-09-25 14:36:48,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 860. [2020-09-25 14:36:48,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-09-25 14:36:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 981 transitions. [2020-09-25 14:36:48,435 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 981 transitions. Word has length 173 [2020-09-25 14:36:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:48,435 INFO L479 AbstractCegarLoop]: Abstraction has 860 states and 981 transitions. [2020-09-25 14:36:48,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:36:48,435 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 981 transitions. [2020-09-25 14:36:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 14:36:48,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:48,441 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:48,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:36:48,442 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:48,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:48,442 INFO L82 PathProgramCache]: Analyzing trace with hash -710634601, now seen corresponding path program 1 times [2020-09-25 14:36:48,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:48,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388291178] [2020-09-25 14:36:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:48,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:48,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:51,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:53,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 14:36:53,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 14:36:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-09-25 14:36:53,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:53,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:36:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 14:36:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 14:36:53,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:53,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:53,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:53,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:36:53,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:53,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:53,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:53,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:36:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:53,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:53,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:36:53,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:53,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:36:53,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:53,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:53,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:53,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:53,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:36:53,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:53,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388291178] [2020-09-25 14:36:53,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:53,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:36:53,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241217744] [2020-09-25 14:36:53,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:36:53,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:53,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:36:53,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:36:53,804 INFO L87 Difference]: Start difference. First operand 860 states and 981 transitions. Second operand 5 states. [2020-09-25 14:36:56,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:56,007 INFO L93 Difference]: Finished difference Result 2227 states and 2619 transitions. [2020-09-25 14:36:56,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:36:56,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-25 14:36:56,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:56,016 INFO L225 Difference]: With dead ends: 2227 [2020-09-25 14:36:56,016 INFO L226 Difference]: Without dead ends: 1232 [2020-09-25 14:36:56,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 14:36:56,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2020-09-25 14:36:56,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1132. [2020-09-25 14:36:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1132 states. [2020-09-25 14:36:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1322 transitions. [2020-09-25 14:36:56,058 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1322 transitions. Word has length 177 [2020-09-25 14:36:56,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:56,059 INFO L479 AbstractCegarLoop]: Abstraction has 1132 states and 1322 transitions. [2020-09-25 14:36:56,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:36:56,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1322 transitions. [2020-09-25 14:36:56,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 14:36:56,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:56,065 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, 1, 1, 1, 1, 1] [2020-09-25 14:36:56,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:36:56,065 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:56,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:56,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1055422721, now seen corresponding path program 1 times [2020-09-25 14:36:56,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:56,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112632596] [2020-09-25 14:36:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:56,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:01,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 14:37:01,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:37:01,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:37:01,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:01,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 14:37:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 14:37:01,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:01,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:01,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:01,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:01,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:37:01,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:01,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:01,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:01,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:01,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:01,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:37:01,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:01,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:37:01,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:01,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:01,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:37:01,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:01,372 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 14:37:01,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112632596] [2020-09-25 14:37:01,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:01,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:01,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25983242] [2020-09-25 14:37:01,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:01,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:01,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:01,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:01,375 INFO L87 Difference]: Start difference. First operand 1132 states and 1322 transitions. Second operand 5 states. [2020-09-25 14:37:03,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:03,263 INFO L93 Difference]: Finished difference Result 2622 states and 3132 transitions. [2020-09-25 14:37:03,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:03,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 14:37:03,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:03,273 INFO L225 Difference]: With dead ends: 2622 [2020-09-25 14:37:03,273 INFO L226 Difference]: Without dead ends: 1514 [2020-09-25 14:37:03,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 14:37:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-09-25 14:37:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1440. [2020-09-25 14:37:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2020-09-25 14:37:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1686 transitions. [2020-09-25 14:37:03,328 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1686 transitions. Word has length 180 [2020-09-25 14:37:03,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:03,329 INFO L479 AbstractCegarLoop]: Abstraction has 1440 states and 1686 transitions. [2020-09-25 14:37:03,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:03,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1686 transitions. [2020-09-25 14:37:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 14:37:03,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:03,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:03,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:03,338 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:03,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:03,338 INFO L82 PathProgramCache]: Analyzing trace with hash 962042522, now seen corresponding path program 1 times [2020-09-25 14:37:03,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:03,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064619822] [2020-09-25 14:37:03,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:03,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:08,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 14:37:08,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:37:08,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 14:37:08,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:08,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 14:37:08,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 14:37:08,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:08,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:08,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:08,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:08,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:08,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:37:08,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:08,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:08,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:08,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:08,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:08,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:08,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 14:37:08,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:08,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 14:37:08,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:08,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:08,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:08,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:08,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:37:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:08,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064619822] [2020-09-25 14:37:08,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:08,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:08,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456771273] [2020-09-25 14:37:08,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:08,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:08,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:08,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:08,669 INFO L87 Difference]: Start difference. First operand 1440 states and 1686 transitions. Second operand 5 states. [2020-09-25 14:37:10,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:10,944 INFO L93 Difference]: Finished difference Result 3862 states and 4647 transitions. [2020-09-25 14:37:10,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:10,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-09-25 14:37:10,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:10,959 INFO L225 Difference]: With dead ends: 3862 [2020-09-25 14:37:10,959 INFO L226 Difference]: Without dead ends: 2446 [2020-09-25 14:37:10,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 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 14:37:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2020-09-25 14:37:11,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 2024. [2020-09-25 14:37:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2020-09-25 14:37:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2449 transitions. [2020-09-25 14:37:11,031 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2449 transitions. Word has length 199 [2020-09-25 14:37:11,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:11,032 INFO L479 AbstractCegarLoop]: Abstraction has 2024 states and 2449 transitions. [2020-09-25 14:37:11,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:11,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2449 transitions. [2020-09-25 14:37:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-25 14:37:11,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:11,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:11,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:37:11,043 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:11,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:11,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2099640220, now seen corresponding path program 1 times [2020-09-25 14:37:11,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:11,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372149340] [2020-09-25 14:37:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:13,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:16,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:16,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-25 14:37:16,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:37:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:37:16,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:16,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:37:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:37:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-09-25 14:37:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:16,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:16,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:16,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:16,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:37:16,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:16,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:16,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:16,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:16,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:37:16,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:16,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:16,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:16,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:16,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:37:16,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:37:16,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 14:37:16,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:16,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:16,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:37:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:16,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:37:16,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:16,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:37:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:16,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:16,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:16,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:16,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:37:16,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:37:16,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 14:37:16,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:16,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:37:16,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:37:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 14:37:17,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372149340] [2020-09-25 14:37:17,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:17,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:37:17,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371890526] [2020-09-25 14:37:17,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:37:17,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:17,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:37:17,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:37:17,101 INFO L87 Difference]: Start difference. First operand 2024 states and 2449 transitions. Second operand 11 states.