/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=0.4 --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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:14,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:14,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:14,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:14,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:14,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:14,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:14,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:14,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:14,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:14,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:14,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:14,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:14,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:14,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:14,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:14,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:14,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:14,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:14,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:14,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:14,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:14,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:14,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:14,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:14,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:14,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:14,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:14,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:14,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:14,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:14,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:14,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:14,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:14,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:14,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:14,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:14,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:14,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:14,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:14,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:14,699 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 13:35:14,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:14,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:14,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:14,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:14,767 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:14,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:14,768 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:14,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:14,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:14,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:14,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:14,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:14,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:14,772 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:14,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:14,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:14,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:14,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:14,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:14,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:14,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:14,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:14,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:14,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:14,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:14,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:14,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:14,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:14,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:14,776 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:35:15,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:15,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:15,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:15,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:15,304 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:15,306 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 13:35:15,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d73a578fb/9a6fc868bdb249fb83d7b718a7af1739/FLAG5128581ab [2020-09-25 13:35:16,092 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:16,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2020-09-25 13:35:16,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d73a578fb/9a6fc868bdb249fb83d7b718a7af1739/FLAG5128581ab [2020-09-25 13:35:16,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d73a578fb/9a6fc868bdb249fb83d7b718a7af1739 [2020-09-25 13:35:16,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:16,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:16,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:16,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:16,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:16,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:16" (1/1) ... [2020-09-25 13:35:16,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d064956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:16, skipping insertion in model container [2020-09-25 13:35:16,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:16" (1/1) ... [2020-09-25 13:35:16,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:16,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:16,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:16,959 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:17,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:17,187 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:17,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17 WrapperNode [2020-09-25 13:35:17,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:17,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:17,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:17,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:17,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (1/1) ... [2020-09-25 13:35:17,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:17,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:17,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:17,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:17,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (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 13:35:17,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:17,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:17,429 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:17,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:17,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:17,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:19,002 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:19,002 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:19,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:19 BoogieIcfgContainer [2020-09-25 13:35:19,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:19,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:19,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:19,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:19,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:16" (1/3) ... [2020-09-25 13:35:19,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534177e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:19, skipping insertion in model container [2020-09-25 13:35:19,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:17" (2/3) ... [2020-09-25 13:35:19,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534177e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:19, skipping insertion in model container [2020-09-25 13:35:19,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:19" (3/3) ... [2020-09-25 13:35:19,022 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2020-09-25 13:35:19,037 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:19,049 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:19,076 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:19,120 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:19,121 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:19,122 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:19,122 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:19,122 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:19,122 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:19,123 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:19,123 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:19,169 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:35:19,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:35:19,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:19,189 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] [2020-09-25 13:35:19,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:19,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:19,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1905842433, now seen corresponding path program 1 times [2020-09-25 13:35:19,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:19,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662152597] [2020-09-25 13:35:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:19,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:20,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:35:20,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:35:20,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1186 [2020-09-25 13:35:20,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:20,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 13:35:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:35:20,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:20,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:20,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:20,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:20,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:35:20,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:20,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:20,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:20,826 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 13:35:20,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662152597] [2020-09-25 13:35:20,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:20,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:35:20,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158954168] [2020-09-25 13:35:20,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:35:20,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:20,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:35:20,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:20,862 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 13:35:24,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:24,375 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-25 13:35:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:35:24,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-25 13:35:24,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:24,408 INFO L225 Difference]: With dead ends: 1358 [2020-09-25 13:35:24,409 INFO L226 Difference]: Without dead ends: 812 [2020-09-25 13:35:24,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:24,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-25 13:35:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-25 13:35:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-25 13:35:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-25 13:35:24,532 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 69 [2020-09-25 13:35:24,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:24,533 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-25 13:35:24,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:35:24,533 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-25 13:35:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 13:35:24,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:24,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:24,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:24,544 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:24,545 INFO L82 PathProgramCache]: Analyzing trace with hash -966101360, now seen corresponding path program 1 times [2020-09-25 13:35:24,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:24,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584275404] [2020-09-25 13:35:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:24,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:27,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 13:35:27,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:27,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2850 [2020-09-25 13:35:27,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:27,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 13:35:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:27,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:27,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:27,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:27,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:27,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:35:27,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:27,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:27,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:27,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:27,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:27,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:27,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:27,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 13:35:27,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:27,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:35:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:35:27,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584275404] [2020-09-25 13:35:27,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:27,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:35:27,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106800543] [2020-09-25 13:35:27,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:35:27,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:27,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:35:27,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:35:27,871 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 6 states. [2020-09-25 13:35:30,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:30,219 INFO L93 Difference]: Finished difference Result 2066 states and 2794 transitions. [2020-09-25 13:35:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:35:30,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2020-09-25 13:35:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:30,233 INFO L225 Difference]: With dead ends: 2066 [2020-09-25 13:35:30,234 INFO L226 Difference]: Without dead ends: 1343 [2020-09-25 13:35:30,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:30,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-09-25 13:35:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1193. [2020-09-25 13:35:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-09-25 13:35:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1577 transitions. [2020-09-25 13:35:30,322 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1577 transitions. Word has length 148 [2020-09-25 13:35:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:30,326 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1577 transitions. [2020-09-25 13:35:30,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:35:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1577 transitions. [2020-09-25 13:35:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 13:35:30,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:30,342 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:30,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:30,342 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:30,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:30,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1018487757, now seen corresponding path program 1 times [2020-09-25 13:35:30,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:30,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574153986] [2020-09-25 13:35:30,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:30,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:30,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:35,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 13:35:35,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:35,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:35:35,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:35,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:35:35,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 13:35:35,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:35,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:35,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:35,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:35,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:35,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:35:35,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:35,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:35,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:35:35,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:35,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:35,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:35,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 13:35:35,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:35,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 13:35:35,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:35,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 13:35:35,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:36,058 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:36,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574153986] [2020-09-25 13:35:36,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:36,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:35:36,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363543375] [2020-09-25 13:35:36,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:36,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:36,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:36,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:36,061 INFO L87 Difference]: Start difference. First operand 1193 states and 1577 transitions. Second operand 7 states. [2020-09-25 13:35:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:38,294 INFO L93 Difference]: Finished difference Result 3072 states and 4316 transitions. [2020-09-25 13:35:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:38,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-09-25 13:35:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:38,316 INFO L225 Difference]: With dead ends: 3072 [2020-09-25 13:35:38,316 INFO L226 Difference]: Without dead ends: 2044 [2020-09-25 13:35:38,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:35:38,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-09-25 13:35:38,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1828. [2020-09-25 13:35:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-09-25 13:35:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2313 transitions. [2020-09-25 13:35:38,413 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2313 transitions. Word has length 215 [2020-09-25 13:35:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:38,418 INFO L479 AbstractCegarLoop]: Abstraction has 1828 states and 2313 transitions. [2020-09-25 13:35:38,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:38,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2313 transitions. [2020-09-25 13:35:38,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 13:35:38,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:38,428 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:35:38,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:38,429 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:38,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:38,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2020435647, now seen corresponding path program 1 times [2020-09-25 13:35:38,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:38,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505401450] [2020-09-25 13:35:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:38,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:38,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:42,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:43,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:43,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 13:35:43,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:43,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 13:35:43,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:43,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:35:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:35:43,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:43,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:43,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:43,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:43,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:43,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:35:43,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:43,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:43,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:43,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:43,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:43,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:43,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:43,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:43,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 13:35:43,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:43,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:43,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:35:43,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:43,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:35:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:44,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:44,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:44,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:44,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 13:35:44,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:44,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:44,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 172 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:35:44,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505401450] [2020-09-25 13:35:44,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:44,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:35:44,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846612255] [2020-09-25 13:35:44,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:35:44,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:44,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:35:44,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:35:44,410 INFO L87 Difference]: Start difference. First operand 1828 states and 2313 transitions. Second operand 10 states. [2020-09-25 13:35:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:47,769 INFO L93 Difference]: Finished difference Result 4071 states and 5318 transitions. [2020-09-25 13:35:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:35:47,770 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 237 [2020-09-25 13:35:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:47,793 INFO L225 Difference]: With dead ends: 4071 [2020-09-25 13:35:47,793 INFO L226 Difference]: Without dead ends: 2408 [2020-09-25 13:35:47,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:35:47,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-09-25 13:35:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2366. [2020-09-25 13:35:47,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2366 states. [2020-09-25 13:35:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 2993 transitions. [2020-09-25 13:35:47,915 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 2993 transitions. Word has length 237 [2020-09-25 13:35:47,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:47,916 INFO L479 AbstractCegarLoop]: Abstraction has 2366 states and 2993 transitions. [2020-09-25 13:35:47,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:35:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 2993 transitions. [2020-09-25 13:35:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 13:35:47,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:47,927 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-09-25 13:35:47,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:47,928 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:47,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:47,929 INFO L82 PathProgramCache]: Analyzing trace with hash 878642836, now seen corresponding path program 1 times [2020-09-25 13:35:47,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:47,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284082463] [2020-09-25 13:35:47,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:48,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:51,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:52,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:52,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 13:35:52,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:35:52,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:35:52,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:52,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:52,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:35:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 13:35:52,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:53,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:53,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:53,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:35:53,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:53,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:35:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:35:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:53,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:53,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:53,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:53,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:53,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 13:35:53,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:53,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:53,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:53,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 13:35:53,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:53,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:35:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:53,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:35:53,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-09-25 13:35:53,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:53,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:53,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 13:35:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 13:35:54,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284082463] [2020-09-25 13:35:54,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:54,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:35:54,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076808974] [2020-09-25 13:35:54,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:35:54,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:54,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:35:54,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:35:54,139 INFO L87 Difference]: Start difference. First operand 2366 states and 2993 transitions. Second operand 9 states. [2020-09-25 13:35:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:57,723 INFO L93 Difference]: Finished difference Result 5535 states and 7377 transitions. [2020-09-25 13:35:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:35:57,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2020-09-25 13:35:57,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:57,745 INFO L225 Difference]: With dead ends: 5535 [2020-09-25 13:35:57,746 INFO L226 Difference]: Without dead ends: 3320 [2020-09-25 13:35:57,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:35:57,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2020-09-25 13:35:57,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 2985. [2020-09-25 13:35:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2985 states. [2020-09-25 13:35:57,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 3761 transitions. [2020-09-25 13:35:57,848 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 3761 transitions. Word has length 241 [2020-09-25 13:35:57,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:57,848 INFO L479 AbstractCegarLoop]: Abstraction has 2985 states and 3761 transitions. [2020-09-25 13:35:57,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:35:57,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 3761 transitions. [2020-09-25 13:35:57,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-25 13:35:57,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:57,860 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:35:57,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:57,860 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:57,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:57,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1521249918, now seen corresponding path program 1 times [2020-09-25 13:35:57,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:57,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908813175] [2020-09-25 13:35:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:57,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:58,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:58,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:00,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:00,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:02,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:02,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-09-25 13:36:02,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:36:02,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:36:02,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:02,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:36:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 13:36:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 13:36:02,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:03,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:36:03,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:36:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:36:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:03,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:36:03,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 13:36:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:36:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:36:03,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:03,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:36:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:03,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:03,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:03,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 13:36:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 13:36:03,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:03,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:03,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:36:03,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:36:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:36:03,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908813175] [2020-09-25 13:36:03,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:36:03,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:36:03,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482887095] [2020-09-25 13:36:03,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:36:03,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:03,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:36:03,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:36:03,633 INFO L87 Difference]: Start difference. First operand 2985 states and 3761 transitions. Second operand 8 states.