/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=LOWLEXORDER --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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:43:47,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:43:47,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:43:47,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:43:47,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:43:47,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:43:47,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:43:47,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:43:47,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:43:47,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:43:47,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:43:47,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:43:47,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:43:47,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:43:47,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:43:47,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:43:47,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:43:47,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:43:47,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:43:47,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:43:47,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:43:47,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:43:47,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:43:47,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:43:47,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:43:47,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:43:47,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:43:47,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:43:47,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:43:47,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:43:47,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:43:47,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:43:47,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:43:47,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:43:47,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:43:47,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:43:47,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:43:47,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:43:47,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:43:47,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:43:47,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:43:47,242 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 [2020-09-24 21:43:47,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:43:47,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:43:47,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:43:47,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:43:47,289 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:43:47,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:43:47,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:43:47,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:43:47,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:43:47,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:43:47,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:43:47,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:43:47,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:43:47,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:43:47,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:43:47,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:43:47,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:43:47,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:43:47,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:43:47,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:43:47,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:43:47,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:43:47,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:43:47,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:43:47,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:43:47,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:43:47,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:43:47,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:43:47,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:43:47,296 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:43:47,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:43:47,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:43:47,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:43:47,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:43:47,790 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:43:47,791 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-24 21:43:47,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f6034bc5/9b969ae5edc64eb0b3c4b580cf6ed777/FLAG8ac3f2b78 [2020-09-24 21:43:48,479 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:43:48,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-24 21:43:48,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f6034bc5/9b969ae5edc64eb0b3c4b580cf6ed777/FLAG8ac3f2b78 [2020-09-24 21:43:48,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f6034bc5/9b969ae5edc64eb0b3c4b580cf6ed777 [2020-09-24 21:43:48,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:43:48,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:43:48,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:43:48,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:43:48,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:43:48,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:43:48" (1/1) ... [2020-09-24 21:43:48,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d5d771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:48, skipping insertion in model container [2020-09-24 21:43:48,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:43:48" (1/1) ... [2020-09-24 21:43:48,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:43:48,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:43:49,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:43:49,193 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:43:49,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:43:49,430 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:43:49,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:49 WrapperNode [2020-09-24 21:43:49,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:43:49,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:43:49,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:43:49,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:43:49,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:49" (1/1) ... [2020-09-24 21:43:49,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:49" (1/1) ... [2020-09-24 21:43:49,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:49" (1/1) ... [2020-09-24 21:43:49,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:49" (1/1) ... [2020-09-24 21:43:49,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:49" (1/1) ... [2020-09-24 21:43:49,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:49" (1/1) ... [2020-09-24 21:43:49,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:49" (1/1) ... [2020-09-24 21:43:49,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:43:49,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:43:49,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:43:49,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:43:49,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:49" (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 [2020-09-24 21:43:49,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:43:49,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:43:49,631 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:43:49,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:43:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:43:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:43:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:43:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:43:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:43:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:43:49,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:43:50,925 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:43:50,925 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:43:50,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:43:50 BoogieIcfgContainer [2020-09-24 21:43:50,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:43:50,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:43:50,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:43:50,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:43:50,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:43:48" (1/3) ... [2020-09-24 21:43:50,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b823426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:43:50, skipping insertion in model container [2020-09-24 21:43:50,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:49" (2/3) ... [2020-09-24 21:43:50,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b823426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:43:50, skipping insertion in model container [2020-09-24 21:43:50,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:43:50" (3/3) ... [2020-09-24 21:43:50,944 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-09-24 21:43:50,956 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:43:50,968 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:43:50,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:43:51,024 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:43:51,025 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:43:51,025 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:43:51,025 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:43:51,025 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:43:51,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:43:51,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:43:51,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:43:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:43:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-24 21:43:51,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:43:51,104 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] [2020-09-24 21:43:51,105 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:43:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:43:51,111 INFO L82 PathProgramCache]: Analyzing trace with hash 79338610, now seen corresponding path program 1 times [2020-09-24 21:43:51,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:43:51,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396302411] [2020-09-24 21:43:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:43:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:51,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:51,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:53,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:54,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:55,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:56,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:56,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 21:43:56,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:43:56,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 21:43:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:43:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:43:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:43:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:43:56,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:43:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:57,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:57,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:43:57,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:57,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 21:43:57,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:57,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:43:57,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:43:57,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:43:57,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:43:57,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396302411] [2020-09-24 21:43:57,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:43:57,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:43:57,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161729683] [2020-09-24 21:43:57,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:43:57,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:43:57,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:43:57,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:43:57,482 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:43:58,219 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-09-24 21:43:58,455 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-09-24 21:43:59,053 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-09-24 21:43:59,465 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-24 21:44:00,507 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-09-24 21:44:00,696 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-09-24 21:44:00,999 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-09-24 21:44:01,705 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-09-24 21:44:02,178 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-09-24 21:44:02,354 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-24 21:44:03,318 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-09-24 21:44:03,722 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-09-24 21:44:06,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:06,154 INFO L93 Difference]: Finished difference Result 1870 states and 2662 transitions. [2020-09-24 21:44:06,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:44:06,157 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 127 [2020-09-24 21:44:06,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:06,188 INFO L225 Difference]: With dead ends: 1870 [2020-09-24 21:44:06,189 INFO L226 Difference]: Without dead ends: 1241 [2020-09-24 21:44:06,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:44:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2020-09-24 21:44:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1076. [2020-09-24 21:44:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:44:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1294 transitions. [2020-09-24 21:44:06,346 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1294 transitions. Word has length 127 [2020-09-24 21:44:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:06,347 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1294 transitions. [2020-09-24 21:44:06,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:44:06,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1294 transitions. [2020-09-24 21:44:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 21:44:06,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:06,356 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 21:44:06,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:06,357 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:06,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:06,357 INFO L82 PathProgramCache]: Analyzing trace with hash 75393616, now seen corresponding path program 1 times [2020-09-24 21:44:06,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:06,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232413654] [2020-09-24 21:44:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:06,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:06,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:08,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:08,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:08,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:09,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:10,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:11,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:11,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-24 21:44:11,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:44:11,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:44:11,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:44:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:44:11,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:44:11,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:11,909 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-09-24 21:44:12,029 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-09-24 21:44:12,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:12,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:12,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:44:12,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:12,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 21:44:12,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:12,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:44:12,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:12,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:44:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:12,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:12,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:12,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:12,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 21:44:12,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:12,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:12,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:44:12,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:13,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232413654] [2020-09-24 21:44:13,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:13,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:44:13,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742278460] [2020-09-24 21:44:13,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:44:13,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:13,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:44:13,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:44:13,009 INFO L87 Difference]: Start difference. First operand 1076 states and 1294 transitions. Second operand 19 states. [2020-09-24 21:44:13,750 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2020-09-24 21:44:14,056 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 101 [2020-09-24 21:44:14,535 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 97 [2020-09-24 21:44:14,840 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 94 [2020-09-24 21:44:15,016 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-09-24 21:44:15,591 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2020-09-24 21:44:15,891 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-09-24 21:44:16,315 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-09-24 21:44:16,722 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2020-09-24 21:44:17,041 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2020-09-24 21:44:18,012 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2020-09-24 21:44:18,560 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2020-09-24 21:44:18,924 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2020-09-24 21:44:19,762 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2020-09-24 21:44:20,360 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-09-24 21:44:20,761 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-09-24 21:44:21,124 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2020-09-24 21:44:21,395 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2020-09-24 21:44:21,719 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2020-09-24 21:44:22,511 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 98 [2020-09-24 21:44:22,845 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2020-09-24 21:44:23,644 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 91 [2020-09-24 21:44:24,334 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2020-09-24 21:44:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:25,045 INFO L93 Difference]: Finished difference Result 4204 states and 5674 transitions. [2020-09-24 21:44:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-24 21:44:25,048 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 149 [2020-09-24 21:44:25,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:25,076 INFO L225 Difference]: With dead ends: 4204 [2020-09-24 21:44:25,076 INFO L226 Difference]: Without dead ends: 3208 [2020-09-24 21:44:25,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=822, Invalid=2370, Unknown=0, NotChecked=0, Total=3192 [2020-09-24 21:44:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2020-09-24 21:44:25,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 3125. [2020-09-24 21:44:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2020-09-24 21:44:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 3779 transitions. [2020-09-24 21:44:25,211 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 3779 transitions. Word has length 149 [2020-09-24 21:44:25,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:25,212 INFO L479 AbstractCegarLoop]: Abstraction has 3125 states and 3779 transitions. [2020-09-24 21:44:25,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:44:25,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 3779 transitions. [2020-09-24 21:44:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 21:44:25,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:25,225 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] [2020-09-24 21:44:25,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:44:25,225 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:25,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:25,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1717741829, now seen corresponding path program 1 times [2020-09-24 21:44:25,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:25,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531670223] [2020-09-24 21:44:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:25,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:25,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:26,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:27,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:27,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:27,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:30,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:30,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 21:44:30,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:44:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 21:44:30,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:44:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:44:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:44:30,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:30,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:30,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:44:30,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:30,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 21:44:30,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:30,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:44:30,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:30,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:44:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:30,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:30,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:30,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:44:30,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:30,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 21:44:30,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:44:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:30,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 21:44:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:30,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:30,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:44:30,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:30,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 21:44:30,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:44:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:30,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:44:30,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:44:31,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531670223] [2020-09-24 21:44:31,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:31,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:44:31,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173096272] [2020-09-24 21:44:31,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:44:31,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:31,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:44:31,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:44:31,228 INFO L87 Difference]: Start difference. First operand 3125 states and 3779 transitions. Second operand 13 states. [2020-09-24 21:44:32,074 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-09-24 21:44:32,464 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-09-24 21:44:34,329 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-09-24 21:44:36,387 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-09-24 21:44:37,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:37,317 INFO L93 Difference]: Finished difference Result 8957 states and 11925 transitions. [2020-09-24 21:44:37,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 21:44:37,318 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-09-24 21:44:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:37,347 INFO L225 Difference]: With dead ends: 8957 [2020-09-24 21:44:37,348 INFO L226 Difference]: Without dead ends: 5527 [2020-09-24 21:44:37,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=356, Invalid=834, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 21:44:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5527 states. [2020-09-24 21:44:37,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5527 to 4827. [2020-09-24 21:44:37,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4827 states. [2020-09-24 21:44:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 5938 transitions. [2020-09-24 21:44:37,525 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 5938 transitions. Word has length 162 [2020-09-24 21:44:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:37,525 INFO L479 AbstractCegarLoop]: Abstraction has 4827 states and 5938 transitions. [2020-09-24 21:44:37,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:44:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 5938 transitions. [2020-09-24 21:44:37,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 21:44:37,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:37,540 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, 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] [2020-09-24 21:44:37,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:44:37,540 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:37,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:37,541 INFO L82 PathProgramCache]: Analyzing trace with hash -254333062, now seen corresponding path program 1 times [2020-09-24 21:44:37,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:37,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525932650] [2020-09-24 21:44:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:39,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking...