/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/Problem02_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:13,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:13,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:13,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:13,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:13,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:13,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:13,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:13,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:13,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:13,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:13,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:13,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:13,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:13,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:13,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:13,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:13,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:13,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:13,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:13,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:13,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:13,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:13,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:13,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:13,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:13,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:13,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:13,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:13,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:13,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:13,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:13,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:13,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:13,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:13,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:13,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:13,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:13,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:13,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:13,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:13,847 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 13:33:13,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:13,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:13,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:13,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:13,895 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:13,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:13,895 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:13,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:13,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:13,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:13,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:13,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:13,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:13,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:13,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:13,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:13,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:13,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:13,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:13,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:13,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:13,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:13,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:13,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:13,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:13,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:13,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:13,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:13,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:13,902 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 13:33:14,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:14,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:14,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:14,374 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:14,375 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:14,376 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 13:33:14,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/319061464/fcf19b40b3414fee813bbd8ebd24b2d5/FLAG15a27741c [2020-09-25 13:33:15,107 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:15,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 13:33:15,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/319061464/fcf19b40b3414fee813bbd8ebd24b2d5/FLAG15a27741c [2020-09-25 13:33:15,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/319061464/fcf19b40b3414fee813bbd8ebd24b2d5 [2020-09-25 13:33:15,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:15,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:15,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:15,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:15,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:15,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:15" (1/1) ... [2020-09-25 13:33:15,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:15, skipping insertion in model container [2020-09-25 13:33:15,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:15" (1/1) ... [2020-09-25 13:33:15,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:15,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:15,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:15,869 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:16,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:16,114 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:16,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:16 WrapperNode [2020-09-25 13:33:16,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:16,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:16,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:16,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:16,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:16" (1/1) ... [2020-09-25 13:33:16,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:16" (1/1) ... [2020-09-25 13:33:16,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:16" (1/1) ... [2020-09-25 13:33:16,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:16" (1/1) ... [2020-09-25 13:33:16,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:16" (1/1) ... [2020-09-25 13:33:16,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:16" (1/1) ... [2020-09-25 13:33:16,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:16" (1/1) ... [2020-09-25 13:33:16,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:16,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:16,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:16,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:16,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:16" (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 13:33:16,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:16,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:16,359 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:16,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:16,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:16,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:16,360 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:16,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:16,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:16,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:17,689 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:17,690 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:17,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:17 BoogieIcfgContainer [2020-09-25 13:33:17,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:17,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:17,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:17,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:17,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:15" (1/3) ... [2020-09-25 13:33:17,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:17, skipping insertion in model container [2020-09-25 13:33:17,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:16" (2/3) ... [2020-09-25 13:33:17,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2566a626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:17, skipping insertion in model container [2020-09-25 13:33:17,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:17" (3/3) ... [2020-09-25 13:33:17,710 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label56.c [2020-09-25 13:33:17,721 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:17,733 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:17,755 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:17,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:17,791 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:17,791 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:17,791 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:17,791 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:17,791 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:17,792 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:17,792 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:17,825 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:33:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 13:33:17,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:17,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:17,850 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:17,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:17,859 INFO L82 PathProgramCache]: Analyzing trace with hash -934155158, now seen corresponding path program 1 times [2020-09-25 13:33:17,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:17,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142353674] [2020-09-25 13:33:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:18,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:23,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 13:33:23,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:23,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:33:23,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:23,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:33:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 13:33:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:33:23,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:23,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:23,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:23,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:23,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:33:23,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:23,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:23,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:33:23,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:23,535 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 13:33:23,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142353674] [2020-09-25 13:33:23,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:23,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:23,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059672583] [2020-09-25 13:33:23,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:23,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:23,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:23,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:23,568 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:33:25,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:25,720 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-25 13:33:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:25,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-25 13:33:25,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:25,746 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 13:33:25,746 INFO L226 Difference]: Without dead ends: 669 [2020-09-25 13:33:25,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:25,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-25 13:33:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-25 13:33:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 13:33:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 13:33:25,871 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 149 [2020-09-25 13:33:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:25,872 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 13:33:25,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 13:33:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 13:33:25,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:25,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:25,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:25,890 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:25,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1111409233, now seen corresponding path program 1 times [2020-09-25 13:33:25,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:25,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306826935] [2020-09-25 13:33:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:25,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:30,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:30,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 13:33:30,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:33:30,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:30,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:30,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:33:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 13:33:30,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:33:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:31,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:31,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:31,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:31,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:31,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:33:31,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:31,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:33:31,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:31,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:31,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:31,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:33:31,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:31,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:33:31,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:31,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:31,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:33:31,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:31,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306826935] [2020-09-25 13:33:31,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:31,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:31,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317631859] [2020-09-25 13:33:31,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:31,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:31,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:31,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:31,338 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 13:33:33,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:33,437 INFO L93 Difference]: Finished difference Result 1531 states and 1847 transitions. [2020-09-25 13:33:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:33,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 13:33:33,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:33,448 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 13:33:33,448 INFO L226 Difference]: Without dead ends: 932 [2020-09-25 13:33:33,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-09-25 13:33:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-09-25 13:33:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-09-25 13:33:33,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1103 transitions. [2020-09-25 13:33:33,514 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1103 transitions. Word has length 166 [2020-09-25 13:33:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:33,514 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1103 transitions. [2020-09-25 13:33:33,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1103 transitions. [2020-09-25 13:33:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 13:33:33,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:33,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:33,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:33,521 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:33,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:33,522 INFO L82 PathProgramCache]: Analyzing trace with hash -375129923, now seen corresponding path program 1 times [2020-09-25 13:33:33,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:33,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204476911] [2020-09-25 13:33:33,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:38,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 13:33:38,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:33:38,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 13:33:38,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:38,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:33:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 13:33:38,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 13:33:38,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:38,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:38,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:38,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:38,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:38,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:33:38,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:38,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:38,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:38,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:38,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:33:38,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:38,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:33:38,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:38,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:38,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:38,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:38,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:33:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:38,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:38,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:38,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:38,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 13:33:38,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:38,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:38,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:33:38,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:33:39,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204476911] [2020-09-25 13:33:39,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:39,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:33:39,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068146249] [2020-09-25 13:33:39,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:39,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:39,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:39,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:39,136 INFO L87 Difference]: Start difference. First operand 922 states and 1103 transitions. Second operand 8 states. [2020-09-25 13:33:43,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:43,387 INFO L93 Difference]: Finished difference Result 2695 states and 3495 transitions. [2020-09-25 13:33:43,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:33:43,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-09-25 13:33:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:43,402 INFO L225 Difference]: With dead ends: 2695 [2020-09-25 13:33:43,402 INFO L226 Difference]: Without dead ends: 1540 [2020-09-25 13:33:43,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:33:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-09-25 13:33:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1522. [2020-09-25 13:33:43,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-09-25 13:33:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1816 transitions. [2020-09-25 13:33:43,517 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1816 transitions. Word has length 184 [2020-09-25 13:33:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:43,518 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 1816 transitions. [2020-09-25 13:33:43,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1816 transitions. [2020-09-25 13:33:43,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 13:33:43,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:43,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:43,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:43,528 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:43,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:43,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1713485497, now seen corresponding path program 1 times [2020-09-25 13:33:43,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:43,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833704707] [2020-09-25 13:33:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:43,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 13:33:48,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 13:33:48,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 13:33:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 13:33:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:48,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:48,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:48,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:33:48,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:48,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:48,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:48,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 13:33:48,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 13:33:48,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:48,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:48,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:33:48,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:48,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833704707] [2020-09-25 13:33:48,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:48,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:48,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998500577] [2020-09-25 13:33:48,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:48,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:48,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:48,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:48,954 INFO L87 Difference]: Start difference. First operand 1522 states and 1816 transitions. Second operand 5 states. [2020-09-25 13:33:51,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:51,270 INFO L93 Difference]: Finished difference Result 4036 states and 4950 transitions. [2020-09-25 13:33:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:51,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 13:33:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:51,287 INFO L225 Difference]: With dead ends: 4036 [2020-09-25 13:33:51,287 INFO L226 Difference]: Without dead ends: 2381 [2020-09-25 13:33:51,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-09-25 13:33:51,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2288. [2020-09-25 13:33:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2020-09-25 13:33:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 2744 transitions. [2020-09-25 13:33:51,369 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 2744 transitions. Word has length 191 [2020-09-25 13:33:51,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:51,370 INFO L479 AbstractCegarLoop]: Abstraction has 2288 states and 2744 transitions. [2020-09-25 13:33:51,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 2744 transitions. [2020-09-25 13:33:51,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 13:33:51,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:51,381 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:51,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:51,381 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:51,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:51,382 INFO L82 PathProgramCache]: Analyzing trace with hash -755789642, now seen corresponding path program 1 times [2020-09-25 13:33:51,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:51,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858976299] [2020-09-25 13:33:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:53,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:56,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 13:33:56,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:56,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:56,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:56,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:33:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:33:56,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 13:33:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:56,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:56,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:56,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:33:56,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:56,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:33:56,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:56,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:56,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:33:56,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:56,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:33:56,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:56,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:56,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:56,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:33:56,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:56,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:33:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:56,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:56,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:33:56,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:56,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 13:33:56,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:56,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:33:56,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:56,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:33:56,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:33:57,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858976299] [2020-09-25 13:33:57,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:57,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:33:57,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949377775] [2020-09-25 13:33:57,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:33:57,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:57,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:33:57,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:33:57,066 INFO L87 Difference]: Start difference. First operand 2288 states and 2744 transitions. Second operand 11 states. [2020-09-25 13:34:00,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:00,761 INFO L93 Difference]: Finished difference Result 5723 states and 7216 transitions. [2020-09-25 13:34:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:34:00,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 200 [2020-09-25 13:34:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:00,773 INFO L225 Difference]: With dead ends: 5723 [2020-09-25 13:34:00,774 INFO L226 Difference]: Without dead ends: 2223 [2020-09-25 13:34:00,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:34:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-09-25 13:34:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2213. [2020-09-25 13:34:00,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2213 states. [2020-09-25 13:34:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 2600 transitions. [2020-09-25 13:34:00,846 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 2600 transitions. Word has length 200 [2020-09-25 13:34:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:00,847 INFO L479 AbstractCegarLoop]: Abstraction has 2213 states and 2600 transitions. [2020-09-25 13:34:00,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:34:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 2600 transitions. [2020-09-25 13:34:00,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 13:34:00,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:00,856 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:00,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:00,857 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash 37270687, now seen corresponding path program 1 times [2020-09-25 13:34:00,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:00,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275468638] [2020-09-25 13:34:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:02,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking...