/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:23:17,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:23:17,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:23:17,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:23:17,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:23:17,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:23:17,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:23:17,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:23:17,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:23:17,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:23:17,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:23:17,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:23:17,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:23:17,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:23:17,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:23:17,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:23:17,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:23:17,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:23:17,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:23:17,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:23:17,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:23:17,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:23:17,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:23:17,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:23:17,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:23:17,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:23:17,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:23:17,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:23:17,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:23:17,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:23:17,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:23:17,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:23:17,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:23:17,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:23:17,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:23:17,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:23:17,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:23:17,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:23:17,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:23:17,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:23:17,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:23:17,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:23:17,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:23:17,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:23:17,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:23:17,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:23:17,311 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:23:17,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:23:17,312 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:23:17,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:23:17,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:23:17,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:23:17,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:23:17,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:23:17,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:23:17,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:23:17,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:23:17,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:23:17,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:23:17,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:23:17,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:23:17,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:23:17,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:23:17,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:23:17,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:23:17,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:23:17,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:23:17,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:23:17,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:23:17,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:23:17,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:23:17,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:23:17,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:23:17,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:23:17,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:23:17,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:23:17,858 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:23:17,859 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-25 04:23:17,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f96c8a23c/89d4a62bbabb4dec8094fe0d5f5410f5/FLAG62c487073 [2020-09-25 04:23:18,537 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:23:18,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-25 04:23:18,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f96c8a23c/89d4a62bbabb4dec8094fe0d5f5410f5/FLAG62c487073 [2020-09-25 04:23:18,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f96c8a23c/89d4a62bbabb4dec8094fe0d5f5410f5 [2020-09-25 04:23:18,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:23:18,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:23:18,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:18,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:23:18,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:23:18,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:18" (1/1) ... [2020-09-25 04:23:18,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ab055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:18, skipping insertion in model container [2020-09-25 04:23:18,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:18" (1/1) ... [2020-09-25 04:23:18,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:23:18,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:23:19,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:19,213 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:23:19,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:19,252 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:23:19,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19 WrapperNode [2020-09-25 04:23:19,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:19,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:23:19,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:23:19,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:23:19,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... [2020-09-25 04:23:19,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:23:19,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:23:19,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:23:19,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:23:19,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:23:19,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:23:19,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:23:19,467 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 04:23:19,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:23:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:23:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:23:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 04:23:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:23:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:23:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:23:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:23:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:23:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:23:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:23:19,802 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:23:19,803 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:23:19,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:19 BoogieIcfgContainer [2020-09-25 04:23:19,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:23:19,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:23:19,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:23:19,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:23:19,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:23:18" (1/3) ... [2020-09-25 04:23:19,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492ed2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:19, skipping insertion in model container [2020-09-25 04:23:19,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:19" (2/3) ... [2020-09-25 04:23:19,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492ed2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:19, skipping insertion in model container [2020-09-25 04:23:19,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:19" (3/3) ... [2020-09-25 04:23:19,819 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-09-25 04:23:19,841 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:23:19,858 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:23:19,881 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:23:19,913 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:23:19,913 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:23:19,913 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:23:19,913 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:23:19,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:23:19,914 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:23:19,914 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:23:19,914 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:23:19,938 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-09-25 04:23:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 04:23:19,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:19,948 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] [2020-09-25 04:23:19,949 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:19,957 INFO L82 PathProgramCache]: Analyzing trace with hash 606292035, now seen corresponding path program 1 times [2020-09-25 04:23:19,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:19,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858538568] [2020-09-25 04:23:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:20,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:20,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:20,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 04:23:20,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 04:23:20,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:20,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:20,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 04:23:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:23:20,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:20,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:20,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:20,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:20,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:23:20,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:20,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:20,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:20,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:20,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 04:23:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:20,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:20,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:20,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:20,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:23:20,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:20,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:20,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:20,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:23:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:20,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858538568] [2020-09-25 04:23:20,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:20,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:23:20,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981866014] [2020-09-25 04:23:20,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:23:20,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:20,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:23:20,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:23:20,480 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-09-25 04:23:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:20,627 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-25 04:23:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:23:20,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-25 04:23:20,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:20,643 INFO L225 Difference]: With dead ends: 73 [2020-09-25 04:23:20,643 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 04:23:20,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:23:20,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 04:23:20,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-25 04:23:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 04:23:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-25 04:23:20,702 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-25 04:23:20,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:20,702 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-25 04:23:20,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:23:20,703 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-25 04:23:20,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 04:23:20,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:20,705 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] [2020-09-25 04:23:20,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:23:20,706 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:20,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1986388344, now seen corresponding path program 1 times [2020-09-25 04:23:20,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:20,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760194304] [2020-09-25 04:23:20,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:20,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:21,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:21,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:23:21,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:21,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 04:23:21,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:21,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:23:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:23:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:23:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:23:21,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:21,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:21,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:21,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:21,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:21,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:23:21,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:21,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:21,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 04:23:21,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 04:23:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:21,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:21,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:21,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:21,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:23:21,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:21,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:21,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760194304] [2020-09-25 04:23:21,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:21,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:23:21,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598244108] [2020-09-25 04:23:21,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:23:21,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:21,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:23:21,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:23:21,558 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 8 states. [2020-09-25 04:23:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:21,841 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2020-09-25 04:23:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:23:21,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 04:23:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:21,843 INFO L225 Difference]: With dead ends: 60 [2020-09-25 04:23:21,844 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 04:23:21,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:23:21,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 04:23:21,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-09-25 04:23:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 04:23:21,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-09-25 04:23:21,854 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2020-09-25 04:23:21,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:21,855 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-09-25 04:23:21,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:23:21,855 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-09-25 04:23:21,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 04:23:21,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:21,857 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:23:21,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:23:21,858 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:21,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:21,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1471095088, now seen corresponding path program 1 times [2020-09-25 04:23:21,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:21,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150724599] [2020-09-25 04:23:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:23,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:23,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 04:23:23,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:23,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1350 [2020-09-25 04:23:23,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:23,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:23:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:23:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:23:23,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:23:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:23,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:23,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:23,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:23,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:23:23,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:23,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:23,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:23,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:23,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:23:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:23,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:23,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:23,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:23:23,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:23,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:23,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:23,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:23,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150724599] [2020-09-25 04:23:23,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:23,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:23:23,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45906609] [2020-09-25 04:23:23,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:23:23,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:23,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:23:23,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:23:23,412 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 9 states. [2020-09-25 04:23:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:23,766 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-09-25 04:23:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:23:23,767 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-25 04:23:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:23,769 INFO L225 Difference]: With dead ends: 66 [2020-09-25 04:23:23,769 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 04:23:23,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:23:23,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 04:23:23,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-09-25 04:23:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 04:23:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-09-25 04:23:23,785 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2020-09-25 04:23:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:23,786 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-09-25 04:23:23,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:23:23,787 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-09-25 04:23:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 04:23:23,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:23,789 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 04:23:23,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:23:23,790 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:23,790 INFO L82 PathProgramCache]: Analyzing trace with hash -93423064, now seen corresponding path program 2 times [2020-09-25 04:23:23,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:23,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315133695] [2020-09-25 04:23:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:23,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:24,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:25,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:25,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 04:23:25,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:25,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1880 [2020-09-25 04:23:25,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:25,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:23:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:23:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:23:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:25,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:25,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:25,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:25,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:25,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:23:25,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:25,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:25,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 04:23:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:25,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:25,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:25,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:23:25,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:25,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:25,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315133695] [2020-09-25 04:23:25,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:25,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 04:23:25,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289330007] [2020-09-25 04:23:25,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 04:23:25,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:25,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 04:23:25,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:23:25,913 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 10 states. [2020-09-25 04:23:26,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:26,285 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-09-25 04:23:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 04:23:26,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-09-25 04:23:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:26,287 INFO L225 Difference]: With dead ends: 72 [2020-09-25 04:23:26,287 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 04:23:26,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 04:23:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 04:23:26,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2020-09-25 04:23:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 04:23:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-09-25 04:23:26,296 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2020-09-25 04:23:26,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:26,297 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-09-25 04:23:26,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 04:23:26,297 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-09-25 04:23:26,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 04:23:26,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:26,298 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:26,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:23:26,299 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:26,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:26,299 INFO L82 PathProgramCache]: Analyzing trace with hash 399520640, now seen corresponding path program 3 times [2020-09-25 04:23:26,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:26,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56723884] [2020-09-25 04:23:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:26,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:28,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:28,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 04:23:28,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2585 [2020-09-25 04:23:28,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:28,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:23:28,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:23:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:23:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:29,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:29,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:29,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:29,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:29,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:29,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:23:29,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:29,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 04:23:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:29,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:29,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:29,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:29,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:23:29,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:29,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:29,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:29,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:29,095 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:29,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56723884] [2020-09-25 04:23:29,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:29,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:23:29,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760028385] [2020-09-25 04:23:29,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:23:29,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:29,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:23:29,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:23:29,100 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 11 states. [2020-09-25 04:23:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:29,654 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-09-25 04:23:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:23:29,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-09-25 04:23:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:29,658 INFO L225 Difference]: With dead ends: 78 [2020-09-25 04:23:29,658 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 04:23:29,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-09-25 04:23:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 04:23:29,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-09-25 04:23:29,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 04:23:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-09-25 04:23:29,675 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 54 [2020-09-25 04:23:29,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:29,677 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-09-25 04:23:29,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:23:29,677 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-09-25 04:23:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 04:23:29,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:29,683 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:29,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:23:29,684 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:29,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:29,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2020051672, now seen corresponding path program 4 times [2020-09-25 04:23:29,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:29,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309379001] [2020-09-25 04:23:29,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:29,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:33,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:33,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 04:23:33,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:33,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3760 [2020-09-25 04:23:33,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:33,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:23:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:23:33,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:23:33,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:33,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:33,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:33,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:33,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:33,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:23:33,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:33,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:33,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:33,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 04:23:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:33,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:33,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:33,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:33,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:33,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:23:33,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:33,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:33,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:33,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:33,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:33,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:33,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309379001] [2020-09-25 04:23:33,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:33,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 04:23:33,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670285689] [2020-09-25 04:23:33,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 04:23:33,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:33,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 04:23:33,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:23:33,697 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 12 states. [2020-09-25 04:23:34,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:34,130 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2020-09-25 04:23:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:23:34,131 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-09-25 04:23:34,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:34,132 INFO L225 Difference]: With dead ends: 84 [2020-09-25 04:23:34,132 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 04:23:34,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-09-25 04:23:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 04:23:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2020-09-25 04:23:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 04:23:34,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-09-25 04:23:34,148 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2020-09-25 04:23:34,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:34,149 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-09-25 04:23:34,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 04:23:34,149 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-09-25 04:23:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 04:23:34,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:34,152 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:34,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:23:34,153 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:34,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:34,153 INFO L82 PathProgramCache]: Analyzing trace with hash 956694576, now seen corresponding path program 5 times [2020-09-25 04:23:34,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:34,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289888224] [2020-09-25 04:23:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:34,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:37,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:37,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:23:37,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3641 [2020-09-25 04:23:37,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:37,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 04:23:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:23:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:23:37,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:23:38,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:38,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:38,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:38,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:38,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:23:38,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:38,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:38,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 04:23:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:38,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:38,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:38,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:38,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:23:38,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:38,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:23:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:23:38,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289888224] [2020-09-25 04:23:38,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:38,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 04:23:38,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479150589] [2020-09-25 04:23:38,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 04:23:38,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:38,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 04:23:38,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:23:38,056 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 13 states. [2020-09-25 04:23:38,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:38,638 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2020-09-25 04:23:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 04:23:38,639 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-09-25 04:23:38,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:38,640 INFO L225 Difference]: With dead ends: 90 [2020-09-25 04:23:38,640 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 04:23:38,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2020-09-25 04:23:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 04:23:38,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2020-09-25 04:23:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 04:23:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2020-09-25 04:23:38,657 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 66 [2020-09-25 04:23:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:38,657 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2020-09-25 04:23:38,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 04:23:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2020-09-25 04:23:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 04:23:38,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:38,659 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:38,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:23:38,659 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:38,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:38,660 INFO L82 PathProgramCache]: Analyzing trace with hash -212003960, now seen corresponding path program 6 times [2020-09-25 04:23:38,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:38,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208419252] [2020-09-25 04:23:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:41,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:41,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 04:23:41,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:23:41,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2707 [2020-09-25 04:23:41,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:41,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:41,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:23:41,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:23:41,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 04:23:41,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:41,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:41,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:41,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:41,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:41,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:23:41,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:41,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:41,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:23:41,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 04:23:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:41,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:41,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:23:41,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:41,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:23:41,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:41,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:23:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:41,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:23:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:23:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 5 proven. 32 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-09-25 04:23:41,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208419252] [2020-09-25 04:23:41,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:23:41,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 04:23:41,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938278990] [2020-09-25 04:23:41,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 04:23:41,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:41,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 04:23:41,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 04:23:41,981 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 14 states. [2020-09-25 04:23:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:42,537 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-09-25 04:23:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 04:23:42,537 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-09-25 04:23:42,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:42,538 INFO L225 Difference]: With dead ends: 73 [2020-09-25 04:23:42,538 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:23:42,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-25 04:23:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:23:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:23:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:23:42,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:23:42,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2020-09-25 04:23:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:42,541 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:23:42,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 04:23:42,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:23:42,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:23:42,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:23:42,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:23:42,681 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 04:23:42,681 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 04:23:42,681 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:23:42,682 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 04:23:42,682 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:23:42,682 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:23:42,682 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 04:23:42,683 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 04:23:42,683 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:23:42,683 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 04:23:42,683 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 04:23:42,683 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 04:23:42,683 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-09-25 04:23:42,683 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-25 04:23:42,684 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 04:23:42,684 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 04:23:42,684 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 04:23:42,684 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 04:23:42,684 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 04:23:42,684 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 04:23:42,684 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 04:23:42,685 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-09-25 04:23:42,685 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-25 04:23:42,685 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 04:23:42,685 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 04:23:42,685 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-09-25 04:23:42,685 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-25 04:23:42,685 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-25 04:23:42,686 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 04:23:42,686 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 04:23:42,686 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 04:23:42,686 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-09-25 04:23:42,686 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-09-25 04:23:42,686 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 04:23:42,687 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 04:23:42,687 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-09-25 04:23:42,687 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-09-25 04:23:42,687 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-09-25 04:23:42,687 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 04:23:42,687 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-09-25 04:23:42,688 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 04:23:42,688 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 04:23:42,688 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-25 04:23:42,688 INFO L264 CegarLoopResult]: At program point L26-5(lines 26 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (<= main_~ad2~0.offset |main_~#ad1~0.offset|) (<= main_~i~0 .cse0) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-09-25 04:23:42,689 INFO L264 CegarLoopResult]: At program point L26-6(lines 26 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (<= main_~ad2~0.offset |main_~#ad1~0.offset|) (<= main_~i~0 .cse1) (= (select .cse0 (+ (* .cse1 8) |main_~#ad1~0.offset|)) .cse1))) [2020-09-25 04:23:42,689 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-09-25 04:23:42,689 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 04:23:42,689 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-25 04:23:42,689 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-09-25 04:23:42,689 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-25 04:23:42,690 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-09-25 04:23:42,690 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-09-25 04:23:42,706 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,708 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,708 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,708 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:23:42 BoogieIcfgContainer [2020-09-25 04:23:42,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:23:42,722 INFO L168 Benchmark]: Toolchain (without parser) took 23825.47 ms. Allocated memory was 137.9 MB in the beginning and 398.5 MB in the end (delta: 260.6 MB). Free memory was 101.0 MB in the beginning and 228.4 MB in the end (delta: -127.4 MB). Peak memory consumption was 133.1 MB. Max. memory is 7.1 GB. [2020-09-25 04:23:42,723 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 04:23:42,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.93 ms. Allocated memory is still 137.9 MB. Free memory was 100.3 MB in the beginning and 90.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-25 04:23:42,725 INFO L168 Benchmark]: Boogie Preprocessor took 127.41 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.2 MB in the beginning and 178.1 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:23:42,726 INFO L168 Benchmark]: RCFGBuilder took 427.30 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 161.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:23:42,727 INFO L168 Benchmark]: TraceAbstraction took 22908.09 ms. Allocated memory was 200.3 MB in the beginning and 398.5 MB in the end (delta: 198.2 MB). Free memory was 160.3 MB in the beginning and 228.4 MB in the end (delta: -68.1 MB). Peak memory consumption was 130.1 MB. Max. memory is 7.1 GB. [2020-09-25 04:23:42,731 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 349.93 ms. Allocated memory is still 137.9 MB. Free memory was 100.3 MB in the beginning and 90.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.41 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.2 MB in the beginning and 178.1 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 427.30 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 161.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22908.09 ms. Allocated memory was 200.3 MB in the beginning and 398.5 MB in the end (delta: 198.2 MB). Free memory was 160.3 MB in the beginning and 228.4 MB in the end (delta: -68.1 MB). Peak memory consumption was 130.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant [2020-09-25 04:23:42,742 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,743 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,743 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,743 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,744 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,744 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,744 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 04:23:42,744 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((ad1 <= ad2 && ad1 == ad2) && ad2 <= ad1) && i <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[ad1][unknown-#memory_int-unknown[pa][pa] * 8 + ad1] == unknown-#memory_int-unknown[pa][pa] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.6s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 267 SDtfs, 379 SDslu, 1016 SDs, 0 SdLazy, 1231 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 18 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 22 NumberOfFragments, 100 HoareAnnotationTreeSize, 15 FomulaSimplifications, 261 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 67 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 412 NumberOfCodeBlocks, 412 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 404 ConstructedInterpolants, 0 QuantifiedInterpolants, 150289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 70/252 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...