/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:32:51,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:32:51,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:32:51,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:32:51,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:32:51,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:32:51,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:32:51,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:32:51,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:32:51,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:32:51,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:32:51,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:32:51,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:32:51,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:32:51,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:32:51,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:32:51,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:32:51,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:32:51,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:32:51,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:32:51,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:32:51,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:32:51,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:32:51,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:32:51,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:32:51,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:32:51,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:32:51,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:32:51,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:32:51,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:32:51,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:32:51,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:32:51,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:32:51,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:32:51,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:32:51,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:32:51,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:32:51,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:32:51,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:32:51,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:32:51,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:32:51,249 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 19:32:51,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:32:51,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:32:51,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:32:51,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:32:51,296 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:32:51,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:32:51,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:32:51,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:32:51,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:32:51,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:32:51,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:32:51,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:32:51,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:32:51,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:32:51,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:32:51,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:32:51,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:32:51,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:32:51,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:32:51,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:32:51,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:32:51,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:32:51,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:32:51,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:32:51,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:32:51,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:32:51,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:32:51,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:32:51,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:32:51,303 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:32:51,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:32:51,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:32:51,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:32:51,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:32:51,906 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:32:51,907 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-24 19:32:51,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd5ea5b25/b013f5c8a30549c68f0408e5f7cde5ef/FLAG7bf932951 [2020-09-24 19:32:52,568 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:32:52,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-24 19:32:52,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd5ea5b25/b013f5c8a30549c68f0408e5f7cde5ef/FLAG7bf932951 [2020-09-24 19:32:52,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd5ea5b25/b013f5c8a30549c68f0408e5f7cde5ef [2020-09-24 19:32:52,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:32:52,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:32:52,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:32:52,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:32:52,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:32:52,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:32:52" (1/1) ... [2020-09-24 19:32:52,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dc17a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:52, skipping insertion in model container [2020-09-24 19:32:52,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:32:52" (1/1) ... [2020-09-24 19:32:52,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:32:52,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:32:53,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:32:53,142 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:32:53,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:32:53,189 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:32:53,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53 WrapperNode [2020-09-24 19:32:53,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:32:53,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:32:53,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:32:53,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:32:53,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (1/1) ... [2020-09-24 19:32:53,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:32:53,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:32:53,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:32:53,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:32:53,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (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 19:32:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:32:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:32:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 19:32:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-24 19:32:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-24 19:32:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:32:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:32:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 19:32:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:32:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-24 19:32:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:32:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-24 19:32:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:32:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:32:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:32:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:32:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:32:53,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:32:53,884 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:32:53,887 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-24 19:32:53,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:32:53 BoogieIcfgContainer [2020-09-24 19:32:53,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:32:53,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:32:53,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:32:53,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:32:53,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:32:52" (1/3) ... [2020-09-24 19:32:53,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8443285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:32:53, skipping insertion in model container [2020-09-24 19:32:53,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:32:53" (2/3) ... [2020-09-24 19:32:53,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8443285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:32:53, skipping insertion in model container [2020-09-24 19:32:53,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:32:53" (3/3) ... [2020-09-24 19:32:53,916 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-24 19:32:53,928 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:32:53,941 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:32:53,963 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:32:53,993 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:32:53,993 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:32:53,993 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:32:53,994 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:32:53,994 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:32:53,994 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:32:53,994 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:32:53,994 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:32:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-09-24 19:32:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 19:32:54,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:54,033 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] [2020-09-24 19:32:54,034 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:54,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times [2020-09-24 19:32:54,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:54,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209560418] [2020-09-24 19:32:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:54,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:54,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:54,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:54,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 19:32:54,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:32:54,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-09-24 19:32:54,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:32:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:32:54,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:54,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:54,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:54,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:32:54,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:54,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:32:54,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:54,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:54,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:54,835 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 19:32:54,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209560418] [2020-09-24 19:32:54,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:54,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 19:32:54,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592646745] [2020-09-24 19:32:54,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 19:32:54,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:54,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 19:32:54,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:32:54,868 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 3 states. [2020-09-24 19:32:55,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:55,182 INFO L93 Difference]: Finished difference Result 245 states and 295 transitions. [2020-09-24 19:32:55,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 19:32:55,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-24 19:32:55,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:55,200 INFO L225 Difference]: With dead ends: 245 [2020-09-24 19:32:55,200 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 19:32:55,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 19:32:55,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 19:32:55,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-24 19:32:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-24 19:32:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2020-09-24 19:32:55,287 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 23 [2020-09-24 19:32:55,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:55,287 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2020-09-24 19:32:55,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 19:32:55,288 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2020-09-24 19:32:55,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 19:32:55,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:55,290 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] [2020-09-24 19:32:55,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:32:55,291 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:55,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:55,292 INFO L82 PathProgramCache]: Analyzing trace with hash -119454780, now seen corresponding path program 1 times [2020-09-24 19:32:55,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:55,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478965753] [2020-09-24 19:32:55,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:55,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:55,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:55,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:55,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:55,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 19:32:55,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:32:55,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-09-24 19:32:55,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:32:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:32:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 19:32:55,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:55,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:55,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:55,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:55,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:32:55,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:55,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:32:55,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:55,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:55,706 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 19:32:55,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478965753] [2020-09-24 19:32:55,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:55,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:32:55,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752417270] [2020-09-24 19:32:55,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:32:55,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:55,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:32:55,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:32:55,710 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand 4 states. [2020-09-24 19:32:56,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:56,086 INFO L93 Difference]: Finished difference Result 303 states and 342 transitions. [2020-09-24 19:32:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:32:56,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-24 19:32:56,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:56,090 INFO L225 Difference]: With dead ends: 303 [2020-09-24 19:32:56,090 INFO L226 Difference]: Without dead ends: 199 [2020-09-24 19:32:56,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:32:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-24 19:32:56,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 124. [2020-09-24 19:32:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-24 19:32:56,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2020-09-24 19:32:56,113 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 23 [2020-09-24 19:32:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:56,114 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2020-09-24 19:32:56,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:32:56,114 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2020-09-24 19:32:56,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 19:32:56,115 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:56,116 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] [2020-09-24 19:32:56,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:32:56,116 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:56,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:56,117 INFO L82 PathProgramCache]: Analyzing trace with hash -395870253, now seen corresponding path program 1 times [2020-09-24 19:32:56,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:56,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033346418] [2020-09-24 19:32:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:56,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:56,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:56,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:56,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:56,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:32:56,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:32:56,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-09-24 19:32:56,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:32:56,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:32:56,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:32:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:56,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:56,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:56,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:32:56,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:56,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:32:56,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:56,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:32:56,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033346418] [2020-09-24 19:32:56,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:56,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:32:56,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878650619] [2020-09-24 19:32:56,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:32:56,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:56,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:32:56,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:32:56,741 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand 5 states. [2020-09-24 19:32:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:57,080 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2020-09-24 19:32:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:32:57,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-24 19:32:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:57,083 INFO L225 Difference]: With dead ends: 240 [2020-09-24 19:32:57,084 INFO L226 Difference]: Without dead ends: 135 [2020-09-24 19:32:57,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:32:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-24 19:32:57,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2020-09-24 19:32:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-24 19:32:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2020-09-24 19:32:57,097 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 30 [2020-09-24 19:32:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:57,098 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2020-09-24 19:32:57,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:32:57,098 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2020-09-24 19:32:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 19:32:57,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:57,101 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] [2020-09-24 19:32:57,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:32:57,101 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:57,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:57,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1571460690, now seen corresponding path program 1 times [2020-09-24 19:32:57,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:57,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72861369] [2020-09-24 19:32:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:32:58,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:32:58,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:32:58,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:32:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:32:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 19:32:58,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:32:58,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:58,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:32:58,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:58,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:58,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:58,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 19:32:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:32:58,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:58,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 19:32:58,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:58,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:32:58,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:58,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:58,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 19:32:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:58,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:32:58,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:58,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:32:58,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 19:32:58,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:58,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:32:58,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72861369] [2020-09-24 19:32:58,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:58,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:32:58,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185274694] [2020-09-24 19:32:58,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:32:58,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:58,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:32:58,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:32:58,296 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand 5 states. [2020-09-24 19:32:58,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:32:58,665 INFO L93 Difference]: Finished difference Result 258 states and 287 transitions. [2020-09-24 19:32:58,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:32:58,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-09-24 19:32:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:32:58,668 INFO L225 Difference]: With dead ends: 258 [2020-09-24 19:32:58,668 INFO L226 Difference]: Without dead ends: 167 [2020-09-24 19:32:58,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:32:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-09-24 19:32:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 124. [2020-09-24 19:32:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-24 19:32:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 136 transitions. [2020-09-24 19:32:58,699 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 136 transitions. Word has length 66 [2020-09-24 19:32:58,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:32:58,700 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 136 transitions. [2020-09-24 19:32:58,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:32:58,700 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 136 transitions. [2020-09-24 19:32:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 19:32:58,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:32:58,708 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] [2020-09-24 19:32:58,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:32:58,709 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:32:58,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:32:58,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1243827998, now seen corresponding path program 1 times [2020-09-24 19:32:58,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:32:58,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430697506] [2020-09-24 19:32:58,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:32:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:59,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 19:32:59,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:32:59,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:32:59,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:32:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 19:32:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:32:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:59,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:32:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:59,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:32:59,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:32:59,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:59,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:32:59,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:32:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:59,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:32:59,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:32:59,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:59,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:32:59,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:32:59,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:32:59,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:59,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:32:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:32:59,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:32:59,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:32:59,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:32:59,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:32:59,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:32:59,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:32:59,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:32:59,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 19:32:59,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:32:59,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:32:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 19:32:59,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430697506] [2020-09-24 19:32:59,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:32:59,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 19:32:59,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121188760] [2020-09-24 19:32:59,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:32:59,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:32:59,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:32:59,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:32:59,866 INFO L87 Difference]: Start difference. First operand 124 states and 136 transitions. Second operand 6 states. [2020-09-24 19:33:00,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:00,130 INFO L93 Difference]: Finished difference Result 210 states and 233 transitions. [2020-09-24 19:33:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:33:00,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-09-24 19:33:00,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:00,133 INFO L225 Difference]: With dead ends: 210 [2020-09-24 19:33:00,133 INFO L226 Difference]: Without dead ends: 132 [2020-09-24 19:33:00,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:33:00,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-24 19:33:00,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-09-24 19:33:00,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-24 19:33:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-09-24 19:33:00,143 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 73 [2020-09-24 19:33:00,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:00,144 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-09-24 19:33:00,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:33:00,144 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-09-24 19:33:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 19:33:00,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:00,146 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] [2020-09-24 19:33:00,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:33:00,147 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:00,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:00,147 INFO L82 PathProgramCache]: Analyzing trace with hash 351512012, now seen corresponding path program 1 times [2020-09-24 19:33:00,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:00,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861452486] [2020-09-24 19:33:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:00,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:00,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:00,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:00,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:01,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 19:33:01,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:33:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:33:01,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:33:01,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 19:33:01,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:33:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:33:01,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:01,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:33:01,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 19:33:01,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:01,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:01,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 19:33:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:01,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:01,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:33:01,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:01,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:33:01,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:01,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:01,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 19:33:01,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:01,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:01,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 19:33:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:01,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:01,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:33:01,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:01,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:33:01,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:01,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 19:33:01,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:01,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:33:01,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861452486] [2020-09-24 19:33:01,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:33:01,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:33:01,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384895588] [2020-09-24 19:33:01,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:33:01,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:01,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:33:01,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:33:01,335 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 7 states. [2020-09-24 19:33:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:01,853 INFO L93 Difference]: Finished difference Result 300 states and 336 transitions. [2020-09-24 19:33:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:33:01,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-09-24 19:33:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:01,856 INFO L225 Difference]: With dead ends: 300 [2020-09-24 19:33:01,856 INFO L226 Difference]: Without dead ends: 190 [2020-09-24 19:33:01,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:33:01,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-24 19:33:01,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 137. [2020-09-24 19:33:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-09-24 19:33:01,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2020-09-24 19:33:01,871 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 76 [2020-09-24 19:33:01,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:01,871 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2020-09-24 19:33:01,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:33:01,872 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2020-09-24 19:33:01,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 19:33:01,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:01,873 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:33:01,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:33:01,874 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:01,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:01,874 INFO L82 PathProgramCache]: Analyzing trace with hash -965257955, now seen corresponding path program 2 times [2020-09-24 19:33:01,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:01,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580126034] [2020-09-24 19:33:01,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:01,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:02,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 19:33:02,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:33:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-09-24 19:33:02,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:33:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 19:33:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:33:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:02,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:02,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:02,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:33:02,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:02,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:33:02,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:02,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:02,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:33:02,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 19:33:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:02,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:02,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:02,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:33:02,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:02,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:33:02,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:02,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:02,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 19:33:02,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:02,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-24 19:33:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:03,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:03,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:33:03,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:03,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:33:03,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 19:33:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:03,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 19:33:03,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580126034] [2020-09-24 19:33:03,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:33:03,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:33:03,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999658434] [2020-09-24 19:33:03,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:33:03,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:03,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:33:03,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:33:03,029 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand 7 states. [2020-09-24 19:33:03,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:03,392 INFO L93 Difference]: Finished difference Result 284 states and 316 transitions. [2020-09-24 19:33:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:33:03,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-09-24 19:33:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:03,395 INFO L225 Difference]: With dead ends: 284 [2020-09-24 19:33:03,395 INFO L226 Difference]: Without dead ends: 187 [2020-09-24 19:33:03,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:33:03,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-24 19:33:03,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 144. [2020-09-24 19:33:03,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-24 19:33:03,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 157 transitions. [2020-09-24 19:33:03,408 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 157 transitions. Word has length 83 [2020-09-24 19:33:03,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:03,410 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 157 transitions. [2020-09-24 19:33:03,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:33:03,410 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 157 transitions. [2020-09-24 19:33:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-24 19:33:03,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:33:03,412 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:33:03,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:33:03,413 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:33:03,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:33:03,413 INFO L82 PathProgramCache]: Analyzing trace with hash -914480437, now seen corresponding path program 3 times [2020-09-24 19:33:03,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:33:03,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385227286] [2020-09-24 19:33:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:33:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:03,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:03,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:03,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:04,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:04,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-24 19:33:04,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:33:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:33:04,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:33:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:33:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 19:33:04,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:04,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:33:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:04,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:04,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 19:33:04,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 19:33:04,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:33:04,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:04,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:33:04,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 19:33:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:04,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:04,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:04,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:33:04,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:04,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:33:04,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:33:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 19:33:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 19:33:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:04,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 19:33:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:33:04,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:33:04,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:33:04,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:33:04,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:33:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:33:04,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:33:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:33:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 19:33:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:33:04,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:33:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-24 19:33:04,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385227286] [2020-09-24 19:33:04,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:33:04,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:33:04,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036764816] [2020-09-24 19:33:04,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:33:04,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:33:04,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:33:04,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:33:04,602 INFO L87 Difference]: Start difference. First operand 144 states and 157 transitions. Second operand 8 states. [2020-09-24 19:33:04,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:33:04,895 INFO L93 Difference]: Finished difference Result 188 states and 205 transitions. [2020-09-24 19:33:04,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:33:04,896 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-09-24 19:33:04,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:33:04,896 INFO L225 Difference]: With dead ends: 188 [2020-09-24 19:33:04,897 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:33:04,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:33:04,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:33:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:33:04,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:33:04,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:33:04,900 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2020-09-24 19:33:04,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:33:04,900 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:33:04,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:33:04,901 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:33:04,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:33:04,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:33:04,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:33:05,202 INFO L271 CegarLoopResult]: At program point elem_existsENTRY(lines 9 15) the Hoare annotation is: true [2020-09-24 19:33:05,203 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 19:33:05,203 INFO L268 CegarLoopResult]: For program point L9(lines 9 15) no Hoare annotation was computed. [2020-09-24 19:33:05,203 INFO L268 CegarLoopResult]: For program point elem_existsFINAL(lines 9 15) no Hoare annotation was computed. [2020-09-24 19:33:05,203 INFO L268 CegarLoopResult]: For program point L9-1(lines 9 15) no Hoare annotation was computed. [2020-09-24 19:33:05,203 INFO L268 CegarLoopResult]: For program point L11-3(lines 11 13) no Hoare annotation was computed. [2020-09-24 19:33:05,203 INFO L268 CegarLoopResult]: For program point L11-4(line 11) no Hoare annotation was computed. [2020-09-24 19:33:05,204 INFO L268 CegarLoopResult]: For program point L11-5(line 11) no Hoare annotation was computed. [2020-09-24 19:33:05,204 INFO L264 CegarLoopResult]: At program point L11-6(lines 11 13) the Hoare annotation is: (let ((.cse0 (<= elem_exists_~size |elem_exists_#in~size|))) (or (and (<= elem_exists_~size (+ |elem_exists_#in~size| elem_exists_~i~0)) .cse0) (and .cse0 (<= 1 |elem_exists_#in~size|)))) [2020-09-24 19:33:05,204 INFO L268 CegarLoopResult]: For program point L11-7(lines 11 13) no Hoare annotation was computed. [2020-09-24 19:33:05,204 INFO L268 CegarLoopResult]: For program point elem_existsEXIT(lines 9 15) no Hoare annotation was computed. [2020-09-24 19:33:05,204 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 19:33:05,204 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 19:33:05,205 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 19:33:05,205 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 19:33:05,205 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-09-24 19:33:05,205 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-24 19:33:05,205 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 19:33:05,205 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 19:33:05,205 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:33:05,206 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 19:33:05,206 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:33:05,206 INFO L271 CegarLoopResult]: At program point insertENTRY(lines 5 8) the Hoare annotation is: true [2020-09-24 19:33:05,206 INFO L268 CegarLoopResult]: For program point insertFINAL(lines 5 8) no Hoare annotation was computed. [2020-09-24 19:33:05,206 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 19:33:05,207 INFO L268 CegarLoopResult]: For program point L5(lines 5 8) no Hoare annotation was computed. [2020-09-24 19:33:05,207 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 19:33:05,207 INFO L268 CegarLoopResult]: For program point L5-1(lines 5 8) no Hoare annotation was computed. [2020-09-24 19:33:05,207 INFO L268 CegarLoopResult]: For program point insertEXIT(lines 5 8) no Hoare annotation was computed. [2020-09-24 19:33:05,207 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 19:33:05,207 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 19:33:05,208 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 19:33:05,208 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 19:33:05,208 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 56) no Hoare annotation was computed. [2020-09-24 19:33:05,208 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-24 19:33:05,208 INFO L268 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-09-24 19:33:05,208 INFO L264 CegarLoopResult]: At program point L52-2(line 52) the Hoare annotation is: false [2020-09-24 19:33:05,209 INFO L268 CegarLoopResult]: For program point L52-3(line 52) no Hoare annotation was computed. [2020-09-24 19:33:05,209 INFO L268 CegarLoopResult]: For program point L52-4(line 52) no Hoare annotation was computed. [2020-09-24 19:33:05,209 INFO L268 CegarLoopResult]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2020-09-24 19:33:05,209 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-24 19:33:05,209 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-24 19:33:05,209 INFO L264 CegarLoopResult]: At program point L44-5(lines 44 48) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-24 19:33:05,210 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 19:33:05,210 INFO L268 CegarLoopResult]: For program point L36-3(lines 36 39) no Hoare annotation was computed. [2020-09-24 19:33:05,210 INFO L268 CegarLoopResult]: For program point L36-4(line 36) no Hoare annotation was computed. [2020-09-24 19:33:05,210 INFO L268 CegarLoopResult]: For program point L36-5(line 36) no Hoare annotation was computed. [2020-09-24 19:33:05,210 INFO L264 CegarLoopResult]: At program point L36-6(lines 36 39) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-24 19:33:05,211 INFO L268 CegarLoopResult]: For program point L36-7(lines 36 39) no Hoare annotation was computed. [2020-09-24 19:33:05,211 INFO L268 CegarLoopResult]: For program point L28-2(lines 28 32) no Hoare annotation was computed. [2020-09-24 19:33:05,211 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-24 19:33:05,211 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-24 19:33:05,211 INFO L264 CegarLoopResult]: At program point L28-5(lines 28 32) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-24 19:33:05,211 INFO L268 CegarLoopResult]: For program point L28-6(lines 28 32) no Hoare annotation was computed. [2020-09-24 19:33:05,211 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 19:33:05,212 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-24 19:33:05,212 INFO L268 CegarLoopResult]: For program point L45-3(lines 45 47) no Hoare annotation was computed. [2020-09-24 19:33:05,212 INFO L268 CegarLoopResult]: For program point L45-4(line 45) no Hoare annotation was computed. [2020-09-24 19:33:05,212 INFO L268 CegarLoopResult]: For program point L45-5(line 45) no Hoare annotation was computed. [2020-09-24 19:33:05,212 INFO L264 CegarLoopResult]: At program point L45-6(lines 45 47) the Hoare annotation is: false [2020-09-24 19:33:05,212 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 19:33:05,213 INFO L268 CegarLoopResult]: For program point L29-3(lines 29 31) no Hoare annotation was computed. [2020-09-24 19:33:05,213 INFO L268 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2020-09-24 19:33:05,213 INFO L268 CegarLoopResult]: For program point L29-5(line 29) no Hoare annotation was computed. [2020-09-24 19:33:05,213 INFO L264 CegarLoopResult]: At program point L29-6(lines 29 31) the Hoare annotation is: false [2020-09-24 19:33:05,213 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 19:33:05,213 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-24 19:33:05,214 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 56) no Hoare annotation was computed. [2020-09-24 19:33:05,214 INFO L264 CegarLoopResult]: At program point L46-2(line 46) the Hoare annotation is: false [2020-09-24 19:33:05,214 INFO L268 CegarLoopResult]: For program point L46-3(line 46) no Hoare annotation was computed. [2020-09-24 19:33:05,214 INFO L268 CegarLoopResult]: For program point L46-4(line 46) no Hoare annotation was computed. [2020-09-24 19:33:05,214 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 19:33:05,214 INFO L268 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-09-24 19:33:05,214 INFO L268 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-09-24 19:33:05,215 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 19:33:05,215 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 56) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 19:33:05,215 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 19:33:05,215 INFO L264 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: false [2020-09-24 19:33:05,215 INFO L268 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-09-24 19:33:05,216 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-24 19:33:05,216 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 19:33:05,216 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 25) no Hoare annotation was computed. [2020-09-24 19:33:05,216 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-24 19:33:05,216 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-24 19:33:05,217 INFO L264 CegarLoopResult]: At program point L22-6(lines 22 25) the Hoare annotation is: (<= main_~n~0 0) [2020-09-24 19:33:05,217 INFO L268 CegarLoopResult]: For program point L22-7(lines 22 25) no Hoare annotation was computed. [2020-09-24 19:33:05,217 INFO L268 CegarLoopResult]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-09-24 19:33:05,217 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-24 19:33:05,217 INFO L268 CegarLoopResult]: For program point L40-4(line 40) no Hoare annotation was computed. [2020-09-24 19:33:05,217 INFO L264 CegarLoopResult]: At program point L40-5(lines 40 49) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-24 19:33:05,218 INFO L268 CegarLoopResult]: For program point L40-6(lines 40 49) no Hoare annotation was computed. [2020-09-24 19:33:05,218 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 19:33:05,218 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 19:33:05,218 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 19:33:05,218 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 19:33:05,218 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~x~0 0)) [2020-09-24 19:33:05,218 INFO L268 CegarLoopResult]: For program point L41-2(line 41) no Hoare annotation was computed. [2020-09-24 19:33:05,219 INFO L268 CegarLoopResult]: For program point L41-3(lines 41 43) no Hoare annotation was computed. [2020-09-24 19:33:05,219 INFO L268 CegarLoopResult]: For program point L41-4(line 41) no Hoare annotation was computed. [2020-09-24 19:33:05,219 INFO L268 CegarLoopResult]: For program point L41-5(line 41) no Hoare annotation was computed. [2020-09-24 19:33:05,219 INFO L268 CegarLoopResult]: For program point L41-7(line 41) no Hoare annotation was computed. [2020-09-24 19:33:05,219 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 19:33:05,219 INFO L268 CegarLoopResult]: For program point L41-8(line 41) no Hoare annotation was computed. [2020-09-24 19:33:05,219 INFO L268 CegarLoopResult]: For program point L41-9(lines 41 43) no Hoare annotation was computed. [2020-09-24 19:33:05,220 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 19:33:05,220 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 19:33:05,220 INFO L268 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-09-24 19:33:05,220 INFO L268 CegarLoopResult]: For program point L50-3(line 50) no Hoare annotation was computed. [2020-09-24 19:33:05,220 INFO L268 CegarLoopResult]: For program point L50-4(line 50) no Hoare annotation was computed. [2020-09-24 19:33:05,220 INFO L264 CegarLoopResult]: At program point L50-5(lines 50 54) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (<= main_~n~0 0)) [2020-09-24 19:33:05,221 INFO L268 CegarLoopResult]: For program point L50-6(lines 50 54) no Hoare annotation was computed. [2020-09-24 19:33:05,221 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 19:33:05,221 INFO L264 CegarLoopResult]: At program point L42-1(line 42) the Hoare annotation is: false [2020-09-24 19:33:05,221 INFO L268 CegarLoopResult]: For program point L42-2(line 42) no Hoare annotation was computed. [2020-09-24 19:33:05,221 INFO L268 CegarLoopResult]: For program point L42-3(line 42) no Hoare annotation was computed. [2020-09-24 19:33:05,221 INFO L268 CegarLoopResult]: For program point L42-4(line 42) no Hoare annotation was computed. [2020-09-24 19:33:05,221 INFO L268 CegarLoopResult]: For program point L42-5(line 42) no Hoare annotation was computed. [2020-09-24 19:33:05,221 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-24 19:33:05,222 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 19:33:05,222 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 19:33:05,222 INFO L268 CegarLoopResult]: For program point L51-3(lines 51 53) no Hoare annotation was computed. [2020-09-24 19:33:05,222 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 19:33:05,222 INFO L268 CegarLoopResult]: For program point L51-4(line 51) no Hoare annotation was computed. [2020-09-24 19:33:05,222 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-24 19:33:05,222 INFO L268 CegarLoopResult]: For program point L51-5(line 51) no Hoare annotation was computed. [2020-09-24 19:33:05,223 INFO L264 CegarLoopResult]: At program point L51-6(lines 51 53) the Hoare annotation is: false [2020-09-24 19:33:05,223 INFO L268 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2020-09-24 19:33:05,223 INFO L268 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2020-09-24 19:33:05,223 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2020-09-24 19:33:05,223 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2020-09-24 19:33:05,223 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2020-09-24 19:33:05,223 INFO L268 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2020-09-24 19:33:05,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:33:05 BoogieIcfgContainer [2020-09-24 19:33:05,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:33:05,253 INFO L168 Benchmark]: Toolchain (without parser) took 12396.37 ms. Allocated memory was 136.8 MB in the beginning and 334.5 MB in the end (delta: 197.7 MB). Free memory was 100.1 MB in the beginning and 282.1 MB in the end (delta: -182.0 MB). Peak memory consumption was 211.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:05,254 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 19:33:05,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.21 ms. Allocated memory is still 136.8 MB. Free memory was 99.5 MB in the beginning and 88.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:05,256 INFO L168 Benchmark]: Boogie Preprocessor took 137.47 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 88.4 MB in the beginning and 176.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:05,256 INFO L168 Benchmark]: RCFGBuilder took 572.36 ms. Allocated memory is still 199.2 MB. Free memory was 176.3 MB in the beginning and 146.8 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:05,257 INFO L168 Benchmark]: TraceAbstraction took 11346.40 ms. Allocated memory was 199.2 MB in the beginning and 334.5 MB in the end (delta: 135.3 MB). Free memory was 146.8 MB in the beginning and 282.1 MB in the end (delta: -135.3 MB). Peak memory consumption was 196.0 MB. Max. memory is 7.1 GB. [2020-09-24 19:33:05,261 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 327.21 ms. Allocated memory is still 136.8 MB. Free memory was 99.5 MB in the beginning and 88.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.47 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 88.4 MB in the beginning and 176.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 572.36 ms. Allocated memory is still 199.2 MB. Free memory was 176.3 MB in the beginning and 146.8 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11346.40 ms. Allocated memory was 199.2 MB in the beginning and 334.5 MB in the end (delta: 135.3 MB). Free memory was 146.8 MB in the beginning and 282.1 MB in the end (delta: -135.3 MB). Peak memory consumption was 196.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: n <= x && n <= 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: n <= x && x <= 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (size <= \old(size) + i && size <= \old(size)) || (size <= \old(size) && 1 <= \old(size)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.9s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 885 SDtfs, 776 SDslu, 1183 SDs, 0 SdLazy, 1499 SolverSat, 132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 228 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 71 PreInvPairs, 82 NumberOfFragments, 91 HoareAnnotationTreeSize, 71 FomulaSimplifications, 174 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 22 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 464 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 456 ConstructedInterpolants, 0 QuantifiedInterpolants, 50620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 32/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...