/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/Problem10_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:12,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:12,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:13,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:13,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:13,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:13,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:13,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:13,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:13,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:13,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:13,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:13,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:13,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:13,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:13,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:13,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:13,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:13,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:13,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:13,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:13,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:13,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:13,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:13,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:13,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:13,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:13,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:13,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:13,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:13,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:13,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:13,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:13,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:13,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:13,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:13,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:13,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:13,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:13,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:13,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:13,081 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 12:26:13,131 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:13,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:13,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:13,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:13,135 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:13,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:13,136 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:13,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:13,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:13,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:13,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:13,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:13,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:13,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:13,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:13,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:13,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:13,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:13,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:13,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:13,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:13,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:13,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:13,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:13,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:13,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:13,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:13,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:13,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:13,142 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 12:26:13,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:13,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:13,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:13,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:13,610 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:13,611 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 12:26:13,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3ee247f/a629e47b77934449a3045a6b9703f492/FLAG257bf4c8e [2020-09-25 12:26:14,365 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:14,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 12:26:14,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3ee247f/a629e47b77934449a3045a6b9703f492/FLAG257bf4c8e [2020-09-25 12:26:14,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3ee247f/a629e47b77934449a3045a6b9703f492 [2020-09-25 12:26:14,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:14,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:14,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:14,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:14,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:14,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:14" (1/1) ... [2020-09-25 12:26:14,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:14, skipping insertion in model container [2020-09-25 12:26:14,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:14" (1/1) ... [2020-09-25 12:26:14,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:14,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:15,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:15,178 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:15,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:15,511 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:15,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:15 WrapperNode [2020-09-25 12:26:15,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:15,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:15,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:15,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:15,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:15" (1/1) ... [2020-09-25 12:26:15,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:15" (1/1) ... [2020-09-25 12:26:15,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:15" (1/1) ... [2020-09-25 12:26:15,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:15" (1/1) ... [2020-09-25 12:26:15,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:15" (1/1) ... [2020-09-25 12:26:15,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:15" (1/1) ... [2020-09-25 12:26:15,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:15" (1/1) ... [2020-09-25 12:26:15,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:15,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:15,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:15,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:15,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:15" (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 12:26:15,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:15,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:15,751 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:17,212 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:17,212 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:17,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:17 BoogieIcfgContainer [2020-09-25 12:26:17,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:17,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:17,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:17,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:17,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:14" (1/3) ... [2020-09-25 12:26:17,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:17, skipping insertion in model container [2020-09-25 12:26:17,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:15" (2/3) ... [2020-09-25 12:26:17,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:17, skipping insertion in model container [2020-09-25 12:26:17,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:17" (3/3) ... [2020-09-25 12:26:17,231 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-25 12:26:17,243 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:17,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:17,277 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:17,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:17,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:17,317 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:17,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:17,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:17,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:17,317 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:17,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 12:26:17,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:17,364 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] [2020-09-25 12:26:17,364 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:17,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:17,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-25 12:26:17,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:17,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 12:26:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:17,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:26:18,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:26:18,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-09-25 12:26:18,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:18,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:26:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 12:26:18,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:26:18,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:18,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:18,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 12:26:18,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:26:18,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:18,499 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 12:26:18,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 12:26:18,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:18,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:26:18,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61336187] [2020-09-25 12:26:18,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:26:18,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:18,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:26:18,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:26:18,535 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:26:20,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:20,740 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 12:26:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:26:20,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 12:26:20,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:20,765 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 12:26:20,766 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 12:26:20,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 12:26:20,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 12:26:20,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 12:26:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 12:26:20,887 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 67 [2020-09-25 12:26:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:20,888 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 12:26:20,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:26:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 12:26:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 12:26:20,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:20,896 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:20,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:20,897 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:20,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:20,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1798381656, now seen corresponding path program 1 times [2020-09-25 12:26:20,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:20,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250806684] [2020-09-25 12:26:20,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:21,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:22,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:25,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:25,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 12:26:25,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:25,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 12:26:25,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:25,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:25,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:25,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 12:26:25,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:26,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:26,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:26:26,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:26,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:26,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-25 12:26:26,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:26:26,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:26,458 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:26:26,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250806684] [2020-09-25 12:26:26,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:26,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:26:26,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310027251] [2020-09-25 12:26:26,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:26,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:26,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:26,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:26,463 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 12:26:28,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:28,210 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 12:26:28,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:26:28,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 12:26:28,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:28,221 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 12:26:28,222 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 12:26:28,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 12:26:28,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 12:26:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 12:26:28,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 12:26:28,291 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 146 [2020-09-25 12:26:28,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:28,295 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 12:26:28,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 12:26:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 12:26:28,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:28,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:28,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:28,308 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:28,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:28,308 INFO L82 PathProgramCache]: Analyzing trace with hash 196926794, now seen corresponding path program 1 times [2020-09-25 12:26:28,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:28,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069665449] [2020-09-25 12:26:28,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:28,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:28,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:28,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:28,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:32,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:32,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 12:26:32,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:32,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3660 [2020-09-25 12:26:32,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:32,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:26:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:32,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 12:26:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:32,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:32,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:32,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:32,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:32,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:32,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:26:32,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:32,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:26:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:32,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:32,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:32,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:32,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:32,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 12:26:32,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:32,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:32,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:26:32,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:32,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:32,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:32,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069665449] [2020-09-25 12:26:32,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:32,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:26:32,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138418903] [2020-09-25 12:26:32,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:26:32,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:32,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:26:32,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:26:32,569 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 12 states. [2020-09-25 12:26:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:36,434 INFO L93 Difference]: Finished difference Result 3115 states and 3932 transitions. [2020-09-25 12:26:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:26:36,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-09-25 12:26:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:36,462 INFO L225 Difference]: With dead ends: 3115 [2020-09-25 12:26:36,462 INFO L226 Difference]: Without dead ends: 2238 [2020-09-25 12:26:36,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:26:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2020-09-25 12:26:36,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 1707. [2020-09-25 12:26:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2020-09-25 12:26:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2136 transitions. [2020-09-25 12:26:36,589 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2136 transitions. Word has length 156 [2020-09-25 12:26:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:36,595 INFO L479 AbstractCegarLoop]: Abstraction has 1707 states and 2136 transitions. [2020-09-25 12:26:36,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:26:36,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2136 transitions. [2020-09-25 12:26:36,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 12:26:36,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:36,604 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:26:36,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:36,605 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:36,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:36,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1077403518, now seen corresponding path program 1 times [2020-09-25 12:26:36,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:36,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424110061] [2020-09-25 12:26:36,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:36,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:36,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:39,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:41,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 12:26:41,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4406 [2020-09-25 12:26:41,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:41,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:41,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 12:26:41,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:41,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:41,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:41,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:41,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:26:41,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:41,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:41,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:41,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:41,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:41,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:41,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 12:26:41,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:41,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:26:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 12:26:41,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:41,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:26:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:41,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:26:41,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:41,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 12:26:41,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:41,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:26:41,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:26:41,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424110061] [2020-09-25 12:26:41,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:41,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:26:41,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883417418] [2020-09-25 12:26:41,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:26:41,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:41,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:26:41,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:41,668 INFO L87 Difference]: Start difference. First operand 1707 states and 2136 transitions. Second operand 10 states. [2020-09-25 12:26:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:46,958 INFO L93 Difference]: Finished difference Result 5747 states and 7661 transitions. [2020-09-25 12:26:46,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:26:46,959 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 226 [2020-09-25 12:26:46,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:46,986 INFO L225 Difference]: With dead ends: 5747 [2020-09-25 12:26:46,986 INFO L226 Difference]: Without dead ends: 4055 [2020-09-25 12:26:46,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:26:47,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4055 states. [2020-09-25 12:26:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4055 to 3463. [2020-09-25 12:26:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3463 states. [2020-09-25 12:26:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 4566 transitions. [2020-09-25 12:26:47,125 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 4566 transitions. Word has length 226 [2020-09-25 12:26:47,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:47,126 INFO L479 AbstractCegarLoop]: Abstraction has 3463 states and 4566 transitions. [2020-09-25 12:26:47,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:26:47,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 4566 transitions. [2020-09-25 12:26:47,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 12:26:47,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:47,134 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:26:47,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:47,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:47,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:47,136 INFO L82 PathProgramCache]: Analyzing trace with hash 735069318, now seen corresponding path program 1 times [2020-09-25 12:26:47,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:47,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35925493] [2020-09-25 12:26:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:52,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 12:26:52,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:52,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:26:52,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:52,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:26:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:26:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 12:26:52,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:52,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:52,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:52,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:52,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:52,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:26:52,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:52,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:26:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:26:52,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:52,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:52,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 12:26:52,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:52,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 12:26:52,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:52,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:26:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:52,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 12:26:52,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:52,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 12:26:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:52,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:52,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-09-25 12:26:52,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:52,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:26:52,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 12:26:53,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35925493] [2020-09-25 12:26:53,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:53,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:26:53,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133917236] [2020-09-25 12:26:53,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:26:53,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:53,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:26:53,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:26:53,232 INFO L87 Difference]: Start difference. First operand 3463 states and 4566 transitions. Second operand 11 states. [2020-09-25 12:26:58,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:58,489 INFO L93 Difference]: Finished difference Result 9835 states and 13377 transitions. [2020-09-25 12:26:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:26:58,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 242 [2020-09-25 12:26:58,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:58,530 INFO L225 Difference]: With dead ends: 9835 [2020-09-25 12:26:58,530 INFO L226 Difference]: Without dead ends: 6503 [2020-09-25 12:26:58,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:26:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6503 states. [2020-09-25 12:26:58,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6503 to 5626. [2020-09-25 12:26:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5626 states. [2020-09-25 12:26:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 7328 transitions. [2020-09-25 12:26:58,759 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 7328 transitions. Word has length 242 [2020-09-25 12:26:58,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:58,759 INFO L479 AbstractCegarLoop]: Abstraction has 5626 states and 7328 transitions. [2020-09-25 12:26:58,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:26:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 7328 transitions. [2020-09-25 12:26:58,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-25 12:26:58,769 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:58,770 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:26:58,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:58,770 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:58,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:58,771 INFO L82 PathProgramCache]: Analyzing trace with hash 634927361, now seen corresponding path program 1 times [2020-09-25 12:26:58,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:58,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142913313] [2020-09-25 12:26:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:58,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:58,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:00,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:00,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking...