/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 SequenceOfStatements --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/diamond_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:14:03,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:14:03,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:14:03,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:14:03,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:14:03,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:14:03,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:14:03,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:14:03,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:14:03,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:14:03,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:14:03,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:14:03,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:14:03,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:14:03,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:14:03,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:14:03,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:14:03,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:14:03,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:14:03,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:14:03,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:14:03,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:14:03,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:14:03,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:14:03,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:14:03,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:14:03,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:14:03,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:14:03,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:14:03,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:14:03,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:14:03,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:14:03,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:14:03,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:14:03,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:14:03,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:14:03,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:14:03,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:14:03,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:14:03,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:14:03,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:14:03,354 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 [2020-10-14 05:14:03,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:14:03,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:14:03,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:14:03,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:14:03,397 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:14:03,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:14:03,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:14:03,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:14:03,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:14:03,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:14:03,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:14:03,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:14:03,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:14:03,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:14:03,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:14:03,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:14:03,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:14:03,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:14:03,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:14:03,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:14:03,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:14:03,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:14:03,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:14:03,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:14:03,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:14:03,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:14:03,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:14:03,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:14:03,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:14:03,403 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 -> SequenceOfStatements 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:14:03,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:14:03,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:14:03,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:14:03,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:14:03,727 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:14:03,728 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2020-10-14 05:14:03,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1327c1cd/aa835cead4bc4626bb3ae99dec0eabb4/FLAG4fc6de8c9 [2020-10-14 05:14:04,224 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:14:04,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/diamond_2-2.c [2020-10-14 05:14:04,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1327c1cd/aa835cead4bc4626bb3ae99dec0eabb4/FLAG4fc6de8c9 [2020-10-14 05:14:04,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1327c1cd/aa835cead4bc4626bb3ae99dec0eabb4 [2020-10-14 05:14:04,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:14:04,674 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:14:04,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:14:04,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:14:04,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:14:04,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:14:04" (1/1) ... [2020-10-14 05:14:04,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcb5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:14:04, skipping insertion in model container [2020-10-14 05:14:04,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:14:04" (1/1) ... [2020-10-14 05:14:04,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:14:04,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:14:04,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:14:04,907 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:14:04,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:14:04,942 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:14:04,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:14:04 WrapperNode [2020-10-14 05:14:04,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:14:04,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:14:04,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:14:04,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:14:05,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:14:04" (1/1) ... [2020-10-14 05:14:05,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:14:04" (1/1) ... [2020-10-14 05:14:05,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:14:04" (1/1) ... [2020-10-14 05:14:05,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:14:04" (1/1) ... [2020-10-14 05:14:05,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:14:04" (1/1) ... [2020-10-14 05:14:05,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:14:04" (1/1) ... [2020-10-14 05:14:05,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:14:04" (1/1) ... [2020-10-14 05:14:05,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:14:05,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:14:05,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:14:05,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:14:05,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:14:04" (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 [2020-10-14 05:14:05,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:14:05,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:14:05,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:14:05,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:14:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:14:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 05:14:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:14:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:14:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:14:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:14:05,414 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:14:05,414 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:14:05,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:14:05 BoogieIcfgContainer [2020-10-14 05:14:05,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:14:05,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:14:05,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:14:05,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:14:05,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:14:04" (1/3) ... [2020-10-14 05:14:05,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ec4ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:14:05, skipping insertion in model container [2020-10-14 05:14:05,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:14:04" (2/3) ... [2020-10-14 05:14:05,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ec4ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:14:05, skipping insertion in model container [2020-10-14 05:14:05,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:14:05" (3/3) ... [2020-10-14 05:14:05,427 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-2.c [2020-10-14 05:14:05,438 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:14:05,445 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:14:05,460 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:14:05,482 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:14:05,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:14:05,482 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:14:05,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:14:05,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:14:05,483 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:14:05,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:14:05,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:14:05,499 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 05:14:05,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:14:05,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:05,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:05,506 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:05,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:05,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1906239810, now seen corresponding path program 1 times [2020-10-14 05:14:05,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:05,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976207553] [2020-10-14 05:14:05,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:05,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:05,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:05,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:14:05,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:05,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 05:14:05,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:05,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:14:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:14:05,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:05,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:05,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:05,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:14:05,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:05,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:14:05,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:05,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:14:05,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976207553] [2020-10-14 05:14:05,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:14:05,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-14 05:14:05,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811000671] [2020-10-14 05:14:05,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-14 05:14:05,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:05,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-14 05:14:05,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:14:05,733 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-10-14 05:14:05,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:05,764 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2020-10-14 05:14:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-14 05:14:05,767 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-14 05:14:05,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:05,782 INFO L225 Difference]: With dead ends: 38 [2020-10-14 05:14:05,782 INFO L226 Difference]: Without dead ends: 21 [2020-10-14 05:14:05,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 05:14:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-14 05:14:05,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-14 05:14:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 05:14:05,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2020-10-14 05:14:05,833 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2020-10-14 05:14:05,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:05,834 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-10-14 05:14:05,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-14 05:14:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2020-10-14 05:14:05,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:14:05,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:05,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:05,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:14:05,836 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:05,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:05,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1847134466, now seen corresponding path program 1 times [2020-10-14 05:14:05,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:05,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276904918] [2020-10-14 05:14:05,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:05,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:05,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:14:05,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 05:14:05,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:05,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:14:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:14:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:14:05,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:06,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:06,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:14:06,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:06,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:14:06,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:06,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:06,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:06,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:14:06,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276904918] [2020-10-14 05:14:06,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:14:06,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:14:06,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946427708] [2020-10-14 05:14:06,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:14:06,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:06,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:14:06,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:14:06,040 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 3 states. [2020-10-14 05:14:06,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:06,232 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-10-14 05:14:06,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:14:06,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 05:14:06,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:06,236 INFO L225 Difference]: With dead ends: 28 [2020-10-14 05:14:06,236 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 05:14:06,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:14:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 05:14:06,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-14 05:14:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 05:14:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2020-10-14 05:14:06,245 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 10 [2020-10-14 05:14:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:06,245 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2020-10-14 05:14:06,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:14:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2020-10-14 05:14:06,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:14:06,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:06,247 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] [2020-10-14 05:14:06,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:14:06,247 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:06,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:06,248 INFO L82 PathProgramCache]: Analyzing trace with hash -129940435, now seen corresponding path program 1 times [2020-10-14 05:14:06,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:06,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928690208] [2020-10-14 05:14:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:06,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:06,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:14:06,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 05:14:06,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-14 05:14:06,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:06,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:14:06,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:14:06,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:14:06,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:06,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:06,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:06,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:14:07,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:07,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:07,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:07,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:07,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:07,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:14:07,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928690208] [2020-10-14 05:14:07,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:14:07,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:14:07,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052990327] [2020-10-14 05:14:07,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:14:07,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:07,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:14:07,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:14:07,008 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand 3 states. [2020-10-14 05:14:07,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:07,102 INFO L93 Difference]: Finished difference Result 50 states and 81 transitions. [2020-10-14 05:14:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:14:07,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 05:14:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:07,105 INFO L225 Difference]: With dead ends: 50 [2020-10-14 05:14:07,105 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 05:14:07,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:14:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 05:14:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 05:14:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 05:14:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-10-14 05:14:07,114 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 21 [2020-10-14 05:14:07,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:07,115 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-10-14 05:14:07,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:14:07,115 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-10-14 05:14:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:14:07,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:07,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:07,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:14:07,117 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:07,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:07,117 INFO L82 PathProgramCache]: Analyzing trace with hash 263086575, now seen corresponding path program 1 times [2020-10-14 05:14:07,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:07,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162723700] [2020-10-14 05:14:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:07,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:07,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:14:07,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:07,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-14 05:14:07,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:07,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:14:07,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:14:07,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:14:07,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:09,876 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse9 (div c_main_~y~0 2))) (let ((.cse3 (* 2 .cse9))) (let ((.cse6 (= c_main_~y~0 .cse3)) (.cse8 (* .cse9 (- 2))) (.cse7 (* 4294967296 (div c_main_~y~0 4294967296)))) (let ((.cse2 (< c_main_~y~0 .cse7)) (.cse4 (* 4294967296 (div (+ c_main_~y~0 .cse8 (- 2)) 4294967296))) (.cse5 (not .cse6)) (.cse0 (+ (* 4294967296 (div (+ c_main_~y~0 .cse8) 4294967296)) .cse3)) (.cse1 (or .cse6 (<= .cse7 c_main_~y~0)))) (and (<= 12 c_main_~x~0) (or (and (<= c_main_~y~0 .cse0) .cse1) (and .cse2 (<= c_main_~y~0 (+ .cse3 .cse4 2)) .cse5)) (<= c_main_~x~0 12) (or (and .cse2 (<= (+ .cse4 .cse3 2) c_main_~y~0) .cse5) (and (<= .cse0 c_main_~y~0) .cse1))))))) is different from true [2020-10-14 05:14:11,703 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 38 DAG size of output: 17 [2020-10-14 05:14:12,275 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 22 [2020-10-14 05:14:12,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:12,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:12,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:12,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:14:12,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:12,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:12,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:12,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:14:12,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162723700] [2020-10-14 05:14:12,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:12,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:14:12,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798014118] [2020-10-14 05:14:12,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:14:12,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:12,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:14:12,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=152, Unknown=1, NotChecked=24, Total=210 [2020-10-14 05:14:12,354 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 15 states. [2020-10-14 05:14:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:13,262 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2020-10-14 05:14:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:14:13,262 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-10-14 05:14:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:13,263 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:14:13,264 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 05:14:13,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=48, Invalid=261, Unknown=1, NotChecked=32, Total=342 [2020-10-14 05:14:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 05:14:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-14 05:14:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 05:14:13,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2020-10-14 05:14:13,271 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 21 [2020-10-14 05:14:13,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:13,271 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2020-10-14 05:14:13,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:14:13,272 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2020-10-14 05:14:13,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:14:13,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:13,273 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] [2020-10-14 05:14:13,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:14:13,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:13,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:13,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1016777103, now seen corresponding path program 1 times [2020-10-14 05:14:13,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:13,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781239239] [2020-10-14 05:14:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:13,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:13,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:13,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:13,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:13,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:13,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:13,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:14:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 05:14:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 05:14:13,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:13,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:14:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:14:13,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:14:13,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:13,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:13,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:13,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:14:13,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:13,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:13,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:13,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:14:13,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781239239] [2020-10-14 05:14:13,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:14:13,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:14:13,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944126925] [2020-10-14 05:14:13,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:14:13,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:13,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:14:13,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:14:13,601 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand 3 states. [2020-10-14 05:14:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:13,656 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2020-10-14 05:14:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:14:13,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 05:14:13,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:13,657 INFO L225 Difference]: With dead ends: 39 [2020-10-14 05:14:13,657 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 05:14:13,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:14:13,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 05:14:13,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-14 05:14:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 05:14:13,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-14 05:14:13,662 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 21 [2020-10-14 05:14:13,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:13,663 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-14 05:14:13,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:14:13,663 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-14 05:14:13,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 05:14:13,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:13,664 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] [2020-10-14 05:14:13,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:14:13,664 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:13,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:13,665 INFO L82 PathProgramCache]: Analyzing trace with hash -345519953, now seen corresponding path program 1 times [2020-10-14 05:14:13,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:13,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816319795] [2020-10-14 05:14:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:13,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:14,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:14,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 05:14:14,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:14,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-14 05:14:14,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:14,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:14:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:14:14,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:14:14,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:14:18,164 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 58 DAG size of output: 19 [2020-10-14 05:14:29,241 WARN L193 SmtUtils]: Spent 4.44 s on a formula simplification. DAG size of input: 273 DAG size of output: 23 [2020-10-14 05:14:29,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:29,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:29,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:14:29,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:14:29,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:29,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:29,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:29,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:14:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:14:29,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816319795] [2020-10-14 05:14:29,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:29,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:14:29,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032020700] [2020-10-14 05:14:29,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:14:29,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:29,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:14:29,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=87, Unknown=3, NotChecked=0, Total=110 [2020-10-14 05:14:29,296 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 11 states. [2020-10-14 05:14:29,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:29,500 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-14 05:14:29,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:14:29,503 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-14 05:14:29,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:29,504 INFO L225 Difference]: With dead ends: 39 [2020-10-14 05:14:29,504 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 05:14:29,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=24, Invalid=105, Unknown=3, NotChecked=0, Total=132 [2020-10-14 05:14:29,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 05:14:29,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 05:14:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 05:14:29,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-10-14 05:14:29,510 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 21 [2020-10-14 05:14:29,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:29,510 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-10-14 05:14:29,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:14:29,510 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-10-14 05:14:29,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 05:14:29,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:29,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:29,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:14:29,512 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:29,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1858628322, now seen corresponding path program 2 times [2020-10-14 05:14:29,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:29,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68229140] [2020-10-14 05:14:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:29,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:29,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 05:14:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-14 05:14:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:29,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:14:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:14:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:14:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:29,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:29,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:29,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:14:29,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:29,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:29,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:14:29,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68229140] [2020-10-14 05:14:29,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:29,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:14:29,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693794017] [2020-10-14 05:14:29,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:14:29,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:29,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:14:29,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:14:29,986 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 8 states. [2020-10-14 05:14:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:30,061 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-14 05:14:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:14:30,062 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-14 05:14:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:30,062 INFO L225 Difference]: With dead ends: 33 [2020-10-14 05:14:30,062 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 05:14:30,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:14:30,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 05:14:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 05:14:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 05:14:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 05:14:30,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-10-14 05:14:30,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:30,065 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 05:14:30,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:14:30,065 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 05:14:30,065 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 05:14:30,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:14:30,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 05:14:30,249 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 05:14:30,249 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:14:30,249 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 05:14:30,249 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 05:14:30,249 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 05:14:30,249 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 05:14:30,250 INFO L268 CegarLoopResult]: For program point L31-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 05:14:30,250 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 48) no Hoare annotation was computed. [2020-10-14 05:14:30,250 INFO L268 CegarLoopResult]: For program point L19-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 05:14:30,250 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 45) the Hoare annotation is: (let ((.cse4 (div main_~x~0 2))) (let ((.cse3 (* 2 .cse4)) (.cse5 (div main_~y~0 2))) (let ((.cse1 (* 4294967296 (div (+ main_~y~0 (* .cse5 (- 2))) 4294967296))) (.cse2 (* 2 .cse5)) (.cse0 (= main_~x~0 .cse3))) (or (and (not .cse0) (<= (+ main_~x~0 5) 0) (< (+ .cse1 .cse2) main_~y~0)) (and (<= (+ .cse3 (* 4294967296 (div (+ (* .cse4 (- 2)) main_~x~0) 4294967296)) main_~y~0) (+ main_~x~0 .cse1 .cse2)) .cse0))))) [2020-10-14 05:14:30,251 INFO L268 CegarLoopResult]: For program point L40-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 05:14:30,251 INFO L268 CegarLoopResult]: For program point L28-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 05:14:30,251 INFO L268 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-10-14 05:14:30,251 INFO L268 CegarLoopResult]: For program point L16-2(lines 15 45) no Hoare annotation was computed. [2020-10-14 05:14:30,251 INFO L268 CegarLoopResult]: For program point L37-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 05:14:30,251 INFO L268 CegarLoopResult]: For program point L25-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 05:14:30,251 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 48) no Hoare annotation was computed. [2020-10-14 05:14:30,251 INFO L268 CegarLoopResult]: For program point L34-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 05:14:30,252 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 48) the Hoare annotation is: true [2020-10-14 05:14:30,252 INFO L268 CegarLoopResult]: For program point L22-1(lines 15 45) no Hoare annotation was computed. [2020-10-14 05:14:30,253 INFO L264 CegarLoopResult]: At program point L43-1(lines 15 45) the Hoare annotation is: (let ((.cse0 (div main_~y~0 2))) (or (and (= main_~y~0 (* .cse0 2)) (= main_~x~0 (* (div main_~x~0 2) 2))) (let ((.cse1 (+ main_~x~0 5))) (and (<= 0 .cse1) (<= .cse1 0) (< (+ (* 4294967296 (div (+ main_~y~0 (* .cse0 (- 2))) 4294967296)) (* 2 .cse0)) main_~y~0))) (= main_~x~0 0))) [2020-10-14 05:14:30,253 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-10-14 05:14:30,253 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-10-14 05:14:30,253 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-14 05:14:30,254 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-10-14 05:14:30,254 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-10-14 05:14:30,254 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-10-14 05:14:30,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:14:30 BoogieIcfgContainer [2020-10-14 05:14:30,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:14:30,285 INFO L168 Benchmark]: Toolchain (without parser) took 25611.21 ms. Allocated memory was 146.3 MB in the beginning and 303.0 MB in the end (delta: 156.8 MB). Free memory was 102.1 MB in the beginning and 263.2 MB in the end (delta: -161.1 MB). Peak memory consumption was 142.1 MB. Max. memory is 7.1 GB. [2020-10-14 05:14:30,290 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 05:14:30,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.32 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-14 05:14:30,292 INFO L168 Benchmark]: Boogie Preprocessor took 119.35 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.0 MB in the beginning and 179.4 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-14 05:14:30,293 INFO L168 Benchmark]: RCFGBuilder took 355.54 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 164.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-10-14 05:14:30,296 INFO L168 Benchmark]: TraceAbstraction took 24863.01 ms. Allocated memory was 202.4 MB in the beginning and 303.0 MB in the end (delta: 100.7 MB). Free memory was 163.2 MB in the beginning and 263.2 MB in the end (delta: -100.0 MB). Peak memory consumption was 147.1 MB. Max. memory is 7.1 GB. [2020-10-14 05:14:30,307 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.32 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.35 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.0 MB in the beginning and 179.4 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.54 ms. Allocated memory is still 202.4 MB. Free memory was 179.4 MB in the beginning and 164.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24863.01 ms. Allocated memory was 202.4 MB in the beginning and 303.0 MB in the end (delta: 100.7 MB). Free memory was 163.2 MB in the beginning and 263.2 MB in the end (delta: -100.0 MB). Peak memory consumption was 147.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: ((y == y / 2 * 2 && x == x / 2 * 2) || ((0 <= x + 5 && x + 5 <= 0) && 4294967296 * ((y + y / 2 * -2) / 4294967296) + 2 * (y / 2) < y)) || x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.5s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 131 SDtfs, 23 SDslu, 209 SDs, 0 SdLazy, 575 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 20.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 133 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 59 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 22.6s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 23811 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 14/17 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...