/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:12:34,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:12:34,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:12:34,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:12:34,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:12:34,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:12:34,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:12:34,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:12:34,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:12:34,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:12:34,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:12:34,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:12:34,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:12:34,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:12:34,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:12:34,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:12:34,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:12:34,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:12:34,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:12:34,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:12:34,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:12:34,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:12:34,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:12:34,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:12:34,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:12:34,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:12:34,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:12:34,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:12:34,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:12:34,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:12:34,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:12:34,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:12:34,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:12:34,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:12:34,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:12:34,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:12:34,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:12:34,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:12:34,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:12:34,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:12:34,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:12:34,220 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 17:12:34,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:12:34,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:12:34,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:12:34,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:12:34,269 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:12:34,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:12:34,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:12:34,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:12:34,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:12:34,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:12:34,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:12:34,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:12:34,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:12:34,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:12:34,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:12:34,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:12:34,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:12:34,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:12:34,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:12:34,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:12:34,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:12:34,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:12:34,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:12:34,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:12:34,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:12:34,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:12:34,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:12:34,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:12:34,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:12:34,274 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;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;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;log-additional-information=true; [2020-09-24 17:12:34,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:12:34,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:12:34,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:12:34,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:12:34,730 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:12:34,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-24 17:12:34,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85775c428/2445845446344355a1b22a62bf8d6e49/FLAG6676a33ca [2020-09-24 17:12:35,461 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:12:35,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label25.c [2020-09-24 17:12:35,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85775c428/2445845446344355a1b22a62bf8d6e49/FLAG6676a33ca [2020-09-24 17:12:35,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/85775c428/2445845446344355a1b22a62bf8d6e49 [2020-09-24 17:12:35,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:12:35,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:12:35,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:12:35,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:12:35,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:12:35,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:12:35" (1/1) ... [2020-09-24 17:12:35,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab12f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:35, skipping insertion in model container [2020-09-24 17:12:35,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:12:35" (1/1) ... [2020-09-24 17:12:35,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:12:35,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:12:36,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:12:36,240 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:12:36,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:12:36,571 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:12:36,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36 WrapperNode [2020-09-24 17:12:36,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:12:36,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:12:36,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:12:36,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:12:36,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ... [2020-09-24 17:12:36,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ... [2020-09-24 17:12:36,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ... [2020-09-24 17:12:36,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ... [2020-09-24 17:12:36,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ... [2020-09-24 17:12:36,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ... [2020-09-24 17:12:36,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (1/1) ... [2020-09-24 17:12:36,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:12:36,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:12:36,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:12:36,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:12:36,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (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 17:12:36,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:12:36,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:12:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 17:12:36,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:12:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 17:12:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:12:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:12:36,811 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:12:36,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:12:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:12:36,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:12:38,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:12:38,421 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:12:38,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:12:38 BoogieIcfgContainer [2020-09-24 17:12:38,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:12:38,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:12:38,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:12:38,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:12:38,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:12:35" (1/3) ... [2020-09-24 17:12:38,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fd38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:12:38, skipping insertion in model container [2020-09-24 17:12:38,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:12:36" (2/3) ... [2020-09-24 17:12:38,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fd38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:12:38, skipping insertion in model container [2020-09-24 17:12:38,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:12:38" (3/3) ... [2020-09-24 17:12:38,440 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label25.c [2020-09-24 17:12:38,451 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:12:38,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:12:38,487 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:12:38,521 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:12:38,521 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:12:38,521 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:12:38,521 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:12:38,521 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:12:38,522 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:12:38,522 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:12:38,522 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:12:38,553 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 17:12:38,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 17:12:38,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:12:38,577 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, 1, 1] [2020-09-24 17:12:38,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:12:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:12:38,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1730766665, now seen corresponding path program 1 times [2020-09-24 17:12:38,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:12:38,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299682537] [2020-09-24 17:12:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:12:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:12:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:39,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:39,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:42,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:42,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:43,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:43,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:47,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:50,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:12:50,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 17:12:50,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 17:12:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11553 [2020-09-24 17:12:50,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:12:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:12:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 17:12:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-24 17:12:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:12:50,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:12:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:12:50,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:50,693 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:12:50,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:12:50,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:12:50,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 17:12:50,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:12:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:12:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:12:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:12:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:12:50,783 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 17:12:50,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299682537] [2020-09-24 17:12:50,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:12:50,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:12:50,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400224702] [2020-09-24 17:12:50,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:12:50,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:12:50,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:12:50,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:12:50,816 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 17:12:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:12:52,986 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-24 17:12:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:12:52,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-24 17:12:52,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:12:53,026 INFO L225 Difference]: With dead ends: 1396 [2020-09-24 17:12:53,026 INFO L226 Difference]: Without dead ends: 788 [2020-09-24 17:12:53,036 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 [2020-09-24 17:12:53,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-24 17:12:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-24 17:12:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-24 17:12:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-24 17:12:53,157 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 160 [2020-09-24 17:12:53,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:12:53,158 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-24 17:12:53,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:12:53,159 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-24 17:12:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-24 17:12:53,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:12:53,166 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:12:53,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:12:53,166 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:12:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:12:53,167 INFO L82 PathProgramCache]: Analyzing trace with hash -859680355, now seen corresponding path program 1 times [2020-09-24 17:12:53,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:12:53,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231615683] [2020-09-24 17:12:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:12:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:12:53,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:53,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:53,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:58,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:13:00,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:13:01,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:13:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:13:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:13:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:13:10,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:13:26,602 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:13:26,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-24 17:13:26,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 17:13:26,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33377 [2020-09-24 17:13:26,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:13:26,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:13:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 17:13:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 17:13:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:13:26,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:13:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:13:26,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:13:26,827 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:13:26,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:13:26,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:13:26,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 17:13:26,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:13:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:13:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:13:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:13:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:13:26,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 17:13:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:13:26,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:13:26,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:13:26,931 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:13:26,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:13:26,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:13:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 17:13:26,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:13:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:13:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:13:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:13:26,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:13:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:13:27,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231615683] [2020-09-24 17:13:27,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:13:27,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 17:13:27,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626209509] [2020-09-24 17:13:27,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 17:13:27,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:13:27,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 17:13:27,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:13:27,112 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 12 states. [2020-09-24 17:13:27,943 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-09-24 17:13:28,303 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58