/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=0.2 --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_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:16:49,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:16:49,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:16:49,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:16:49,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:16:49,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:16:49,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:16:49,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:16:49,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:16:49,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:16:49,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:16:49,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:16:49,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:16:49,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:16:49,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:16:49,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:16:49,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:16:49,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:16:49,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:16:49,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:16:49,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:16:49,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:16:49,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:16:49,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:16:49,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:16:49,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:16:49,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:16:49,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:16:49,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:16:49,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:16:49,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:16:49,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:16:49,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:16:49,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:16:49,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:16:49,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:16:49,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:16:49,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:16:49,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:16:49,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:16:49,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:16:49,911 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 11:16:49,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:16:49,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:16:49,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:16:49,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:16:49,975 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:16:49,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:16:49,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:16:49,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:16:49,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:16:49,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:16:49,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:16:49,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:16:49,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:16:49,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:16:49,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:16:49,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:16:49,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:16:49,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:16:49,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:16:49,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:16:49,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:16:49,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:16:49,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:16:49,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:16:49,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:16:49,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:16:49,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:16:49,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:16:49,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:16:49,984 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:16:50,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:16:50,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:16:50,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:16:50,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:16:50,522 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:16:50,523 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 11:16:50,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f49084a21/766f1ad171b24e64939439dbbc5d96f0/FLAGfdababaad [2020-09-25 11:16:51,302 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:16:51,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 11:16:51,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f49084a21/766f1ad171b24e64939439dbbc5d96f0/FLAGfdababaad [2020-09-25 11:16:51,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f49084a21/766f1ad171b24e64939439dbbc5d96f0 [2020-09-25 11:16:51,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:16:51,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:16:51,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:51,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:16:51,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:16:51,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:51" (1/1) ... [2020-09-25 11:16:51,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:51, skipping insertion in model container [2020-09-25 11:16:51,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:16:51" (1/1) ... [2020-09-25 11:16:51,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:16:51,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:16:52,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:52,162 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:16:52,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:16:52,440 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:16:52,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52 WrapperNode [2020-09-25 11:16:52,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:16:52,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:16:52,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:16:52,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:16:52,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (1/1) ... [2020-09-25 11:16:52,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:16:52,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:16:52,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:16:52,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:16:52,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (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 11:16:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:16:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:16:52,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:16:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:16:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:16:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:16:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:16:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:16:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:16:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:16:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:16:54,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:16:54,106 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:16:54,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:54 BoogieIcfgContainer [2020-09-25 11:16:54,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:16:54,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:16:54,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:16:54,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:16:54,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:16:51" (1/3) ... [2020-09-25 11:16:54,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:54, skipping insertion in model container [2020-09-25 11:16:54,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:16:52" (2/3) ... [2020-09-25 11:16:54,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:16:54, skipping insertion in model container [2020-09-25 11:16:54,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:16:54" (3/3) ... [2020-09-25 11:16:54,125 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-09-25 11:16:54,138 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:16:54,149 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:16:54,172 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:16:54,208 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:16:54,208 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:16:54,208 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:16:54,208 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:16:54,208 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:16:54,209 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:16:54,209 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:16:54,209 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:16:54,243 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:16:54,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 11:16:54,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:54,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:54,268 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:54,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:54,276 INFO L82 PathProgramCache]: Analyzing trace with hash -404902623, now seen corresponding path program 1 times [2020-09-25 11:16:54,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:54,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803637987] [2020-09-25 11:16:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:54,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:55,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:56,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:58,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:59,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:59,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 11:16:59,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:16:59,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 11:16:59,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:59,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:16:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:16:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 11:16:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:16:59,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:59,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:59,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:59,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:59,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:16:59,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:59,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:16:59,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:59,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:16:59,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:16:59,960 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 11:16:59,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803637987] [2020-09-25 11:16:59,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:16:59,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:16:59,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235441755] [2020-09-25 11:16:59,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:16:59,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:16:59,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:16:59,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:16:59,996 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:17:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:02,237 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 11:17:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:17:02,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-25 11:17:02,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:02,263 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 11:17:02,263 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 11:17:02,273 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 11:17:02,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 11:17:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 11:17:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 11:17:02,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 11:17:02,383 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 158 [2020-09-25 11:17:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:02,384 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 11:17:02,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:17:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 11:17:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 11:17:02,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:02,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:02,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:17:02,400 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:02,401 INFO L82 PathProgramCache]: Analyzing trace with hash 856620700, now seen corresponding path program 1 times [2020-09-25 11:17:02,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:02,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744101692] [2020-09-25 11:17:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:02,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:07,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:07,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 11:17:07,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:17:07,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 11:17:07,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:07,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:17:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:17:07,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 11:17:07,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:07,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:07,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:07,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:07,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:07,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:07,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:17:07,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:07,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:07,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:17:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:07,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:07,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:07,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:07,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:07,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:17:07,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:07,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 11:17:07,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:07,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:17:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:17:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:08,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744101692] [2020-09-25 11:17:08,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:08,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:17:08,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472161892] [2020-09-25 11:17:08,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:17:08,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:08,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:17:08,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:17:08,258 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 11 states. [2020-09-25 11:17:12,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:12,049 INFO L93 Difference]: Finished difference Result 1927 states and 2548 transitions. [2020-09-25 11:17:12,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:17:12,050 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 192 [2020-09-25 11:17:12,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:12,056 INFO L225 Difference]: With dead ends: 1927 [2020-09-25 11:17:12,057 INFO L226 Difference]: Without dead ends: 887 [2020-09-25 11:17:12,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:17:12,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-09-25 11:17:12,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 722. [2020-09-25 11:17:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-09-25 11:17:12,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 845 transitions. [2020-09-25 11:17:12,100 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 845 transitions. Word has length 192 [2020-09-25 11:17:12,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:12,101 INFO L479 AbstractCegarLoop]: Abstraction has 722 states and 845 transitions. [2020-09-25 11:17:12,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:17:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 845 transitions. [2020-09-25 11:17:12,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 11:17:12,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:12,106 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:12,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:17:12,107 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:12,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:12,107 INFO L82 PathProgramCache]: Analyzing trace with hash 564185116, now seen corresponding path program 1 times [2020-09-25 11:17:12,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:12,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174466753] [2020-09-25 11:17:12,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:12,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:12,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:13,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:15,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:15,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:17,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:17,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 11:17:17,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:17:17,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-09-25 11:17:17,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:17,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:17,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 11:17:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:17:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:17:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:17,758 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-09-25 11:17:17,932 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-09-25 11:17:18,090 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-09-25 11:17:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:18,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:18,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:18,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:18,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:17:18,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:18,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:17:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:18,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:18,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:18,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:18,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:17:18,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:18,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 11:17:18,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:18,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:18,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:17:18,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:18,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174466753] [2020-09-25 11:17:18,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:18,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 11:17:18,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314042368] [2020-09-25 11:17:18,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 11:17:18,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:18,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 11:17:18,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:17:18,905 INFO L87 Difference]: Start difference. First operand 722 states and 845 transitions. Second operand 16 states. [2020-09-25 11:17:21,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:21,960 INFO L93 Difference]: Finished difference Result 1359 states and 1617 transitions. [2020-09-25 11:17:21,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:17:21,960 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 193 [2020-09-25 11:17:21,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:21,964 INFO L225 Difference]: With dead ends: 1359 [2020-09-25 11:17:21,965 INFO L226 Difference]: Without dead ends: 658 [2020-09-25 11:17:21,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:17:21,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-25 11:17:21,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 648. [2020-09-25 11:17:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-09-25 11:17:21,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 709 transitions. [2020-09-25 11:17:21,989 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 709 transitions. Word has length 193 [2020-09-25 11:17:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:21,989 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 709 transitions. [2020-09-25 11:17:21,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 11:17:21,990 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 709 transitions. [2020-09-25 11:17:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 11:17:21,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:21,994 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, 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] [2020-09-25 11:17:21,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:17:21,994 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:21,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:21,995 INFO L82 PathProgramCache]: Analyzing trace with hash -784683625, now seen corresponding path program 1 times [2020-09-25 11:17:21,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:21,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206944129] [2020-09-25 11:17:21,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:22,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:22,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:22,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:27,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:27,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 11:17:27,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:17:27,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:17:27,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:27,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:17:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 11:17:27,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 11:17:27,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:27,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:27,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:27,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:27,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:27,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:27,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:17:27,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:27,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:27,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:27,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:27,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:27,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:27,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:17:27,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:27,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:17:27,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:27,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:27,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:27,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 11:17:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:27,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:27,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:27,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 11:17:27,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:27,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 11:17:27,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:27,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:17:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:17:27,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 11:17:27,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206944129] [2020-09-25 11:17:27,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:27,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:17:27,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776100501] [2020-09-25 11:17:27,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:17:27,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:27,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:17:27,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:17:27,682 INFO L87 Difference]: Start difference. First operand 648 states and 709 transitions. Second operand 8 states. [2020-09-25 11:17:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:30,095 INFO L93 Difference]: Finished difference Result 1533 states and 1687 transitions. [2020-09-25 11:17:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:17:30,095 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2020-09-25 11:17:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:30,101 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 11:17:30,101 INFO L226 Difference]: Without dead ends: 809 [2020-09-25 11:17:30,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:17:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-09-25 11:17:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 794. [2020-09-25 11:17:30,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-09-25 11:17:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 864 transitions. [2020-09-25 11:17:30,128 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 864 transitions. Word has length 236 [2020-09-25 11:17:30,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:30,130 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 864 transitions. [2020-09-25 11:17:30,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:17:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 864 transitions. [2020-09-25 11:17:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 11:17:30,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:30,135 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, 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] [2020-09-25 11:17:30,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:17:30,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:30,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:30,136 INFO L82 PathProgramCache]: Analyzing trace with hash 902720122, now seen corresponding path program 1 times [2020-09-25 11:17:30,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:30,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070696253] [2020-09-25 11:17:30,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:30,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:30,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:30,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:34,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:35,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:35,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:35,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 11:17:35,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:17:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-09-25 11:17:35,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:35,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:17:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:17:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-09-25 11:17:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:17:35,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:35,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:35,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:35,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:35,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 11:17:35,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:35,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:17:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:35,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:35,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:35,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:36,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:36,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:17:36,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-09-25 11:17:36,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:36,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:36,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 11:17:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:36,263 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:36,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070696253] [2020-09-25 11:17:36,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:36,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:17:36,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774491174] [2020-09-25 11:17:36,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:17:36,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:36,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:17:36,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:17:36,266 INFO L87 Difference]: Start difference. First operand 794 states and 864 transitions. Second operand 13 states. [2020-09-25 11:17:36,825 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57