/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:04:30,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:04:30,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:04:30,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:04:30,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:04:30,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:04:30,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:04:30,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:04:30,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:04:30,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:04:30,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:04:30,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:04:30,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:04:30,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:04:30,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:04:30,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:04:30,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:04:30,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:04:30,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:04:30,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:04:30,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:04:30,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:04:30,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:04:30,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:04:30,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:04:30,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:04:30,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:04:30,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:04:30,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:04:30,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:04:30,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:04:30,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:04:30,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:04:30,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:04:30,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:04:30,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:04:30,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:04:30,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:04:30,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:04:30,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:04:30,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:04:30,451 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 00:04:30,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:04:30,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:04:30,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:04:30,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:04:30,480 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:04:30,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:04:30,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:04:30,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:04:30,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:04:30,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:04:30,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:04:30,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:04:30,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:04:30,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:04:30,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:04:30,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:04:30,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:04:30,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:04:30,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:04:30,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:04:30,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:04:30,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:04:30,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:04:30,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:04:30,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:04:30,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:04:30,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:04:30,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:04:30,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:04:30,486 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:04:31,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:04:31,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:04:31,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:04:31,056 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:04:31,057 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:04:31,058 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2020-09-25 00:04:31,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9cfaa2d7/49ae89b272cb44d8884b1079cd9864ce/FLAG953d5e909 [2020-09-25 00:04:31,709 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:04:31,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2020-09-25 00:04:31,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9cfaa2d7/49ae89b272cb44d8884b1079cd9864ce/FLAG953d5e909 [2020-09-25 00:04:32,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9cfaa2d7/49ae89b272cb44d8884b1079cd9864ce [2020-09-25 00:04:32,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:04:32,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:04:32,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:04:32,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:04:32,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:04:32,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4757cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32, skipping insertion in model container [2020-09-25 00:04:32,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:04:32,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:04:32,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:04:32,354 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:04:32,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:04:32,387 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:04:32,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32 WrapperNode [2020-09-25 00:04:32,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:04:32,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:04:32,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:04:32,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:04:32,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (1/1) ... [2020-09-25 00:04:32,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:04:32,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:04:32,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:04:32,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:04:32,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (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 00:04:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:04:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:04:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:04:32,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:04:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:04:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:04:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:04:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:04:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:04:32,794 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:04:32,794 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 00:04:32,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:32 BoogieIcfgContainer [2020-09-25 00:04:32,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:04:32,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:04:32,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:04:32,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:04:32,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:04:32" (1/3) ... [2020-09-25 00:04:32,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71585164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:32, skipping insertion in model container [2020-09-25 00:04:32,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:32" (2/3) ... [2020-09-25 00:04:32,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71585164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:32, skipping insertion in model container [2020-09-25 00:04:32,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:32" (3/3) ... [2020-09-25 00:04:32,809 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_4-2.c [2020-09-25 00:04:32,821 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:04:32,832 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:04:32,855 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:04:32,888 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:04:32,888 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:04:32,888 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:04:32,888 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:04:32,889 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:04:32,889 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:04:32,889 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:04:32,889 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:04:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-09-25 00:04:32,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-25 00:04:32,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:32,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:32,919 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:32,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:32,926 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2020-09-25 00:04:32,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:32,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812940227] [2020-09-25 00:04:32,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:33,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:33,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:33,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 00:04:33,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:04:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 00:04:33,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:04:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:04:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:04:33,563 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 15 [2020-09-25 00:04:33,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:33,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:33,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:33,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:33,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:04:33,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:33,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:33,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:33,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:33,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:33,598 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 00:04:33,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812940227] [2020-09-25 00:04:33,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:04:33,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:04:33,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656272415] [2020-09-25 00:04:33,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:04:33,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:33,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:04:33,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:04:33,631 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-09-25 00:04:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:33,742 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-09-25 00:04:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:04:33,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-25 00:04:33,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:33,755 INFO L225 Difference]: With dead ends: 38 [2020-09-25 00:04:33,755 INFO L226 Difference]: Without dead ends: 14 [2020-09-25 00:04:33,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:04:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-09-25 00:04:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-09-25 00:04:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-09-25 00:04:33,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-09-25 00:04:33,800 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-09-25 00:04:33,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:33,800 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-09-25 00:04:33,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:04:33,801 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-09-25 00:04:33,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 00:04:33,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:33,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:33,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:04:33,803 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:33,803 INFO L82 PathProgramCache]: Analyzing trace with hash -355776516, now seen corresponding path program 1 times [2020-09-25 00:04:33,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:33,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314880672] [2020-09-25 00:04:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:33,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:34,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:04:34,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:04:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-25 00:04:34,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:04:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:04:34,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:34,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:34,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:34,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:34,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:04:34,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:34,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:34,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314880672] [2020-09-25 00:04:34,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:34,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 00:04:34,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676963729] [2020-09-25 00:04:34,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:04:34,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:34,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:04:34,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:04:34,326 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2020-09-25 00:04:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:34,381 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-09-25 00:04:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:04:34,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-25 00:04:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:34,383 INFO L225 Difference]: With dead ends: 21 [2020-09-25 00:04:34,383 INFO L226 Difference]: Without dead ends: 16 [2020-09-25 00:04:34,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:04:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-09-25 00:04:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-09-25 00:04:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-25 00:04:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-09-25 00:04:34,390 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-09-25 00:04:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:34,391 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-09-25 00:04:34,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:04:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-09-25 00:04:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-25 00:04:34,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:34,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:34,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:04:34,393 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:34,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1432978565, now seen corresponding path program 2 times [2020-09-25 00:04:34,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:34,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350286008] [2020-09-25 00:04:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:34,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:34,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:34,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:04:34,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:04:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 00:04:34,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:04:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:04:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:38,772 WARN L193 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 44 DAG size of output: 15 [2020-09-25 00:04:38,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:38,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:38,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:38,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:04:38,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:38,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:38,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:38,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350286008] [2020-09-25 00:04:38,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:38,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:04:38,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258012810] [2020-09-25 00:04:38,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:04:38,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:38,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:04:38,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:04:38,821 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2020-09-25 00:04:40,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:40,982 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-09-25 00:04:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:04:40,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-25 00:04:40,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:40,984 INFO L225 Difference]: With dead ends: 23 [2020-09-25 00:04:40,984 INFO L226 Difference]: Without dead ends: 18 [2020-09-25 00:04:40,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:04:40,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-25 00:04:40,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-09-25 00:04:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-09-25 00:04:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-09-25 00:04:40,991 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-09-25 00:04:40,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:40,991 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-09-25 00:04:40,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:04:40,992 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-09-25 00:04:40,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 00:04:40,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:40,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:40,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:04:40,993 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:40,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:40,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1537029318, now seen corresponding path program 3 times [2020-09-25 00:04:40,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:40,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475884815] [2020-09-25 00:04:40,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:41,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:41,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:41,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:41,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:41,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:04:41,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:04:41,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 00:04:41,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:41,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:04:41,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:41,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 00:04:41,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:43,366 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (div c_main_~x~0 2))) (let ((.cse0 (* 2 .cse1))) (let ((.cse2 (= c_main_~x~0 .cse0)) (.cse13 (* 4294967296 (div c_main_~x~0 4294967296))) (.cse12 (* .cse1 (- 2)))) (let ((.cse9 (= c_main_~x~0 (+ .cse0 (* 4294967296 (div (+ .cse12 c_main_~x~0) 4294967296))))) (.cse10 (<= .cse13 c_main_~x~0)) (.cse7 (< c_main_~x~0 .cse13)) (.cse8 (not .cse2)) (.cse3 (= c_main_~x~0 (+ .cse0 (* 4294967296 (div (+ .cse12 c_main_~x~0 (- 2)) 4294967296)) 2)))) (let ((.cse6 (not .cse3)) (.cse11 (and .cse7 .cse8)) (.cse4 (or .cse2 .cse10)) (.cse5 (not .cse9))) (or (and (or (and (or (<= c_main_~x~0 .cse0) (<= .cse1 134217716) (<= c_main_~x~0 268435434)) (or (< 134217716 .cse1) (<= 268435434 c_main_~x~0))) .cse2) (or (and .cse3 .cse4 .cse5) (and .cse6 (or (and .cse7 .cse8 .cse9) (and (or .cse2 .cse10 .cse11) .cse5))))) (and (or .cse6 .cse9 .cse11) (or (and (or (and .cse7 .cse8 .cse4) .cse9) (or .cse2 .cse10 .cse5)) .cse3)))))))) is different from true [2020-09-25 00:04:43,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:43,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:43,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:43,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:43,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:43,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:04:43,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:43,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:43,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:43,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:43,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2020-09-25 00:04:43,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475884815] [2020-09-25 00:04:43,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:43,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:04:43,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150267962] [2020-09-25 00:04:43,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:04:43,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:43,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:04:43,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=32, Unknown=1, NotChecked=10, Total=56 [2020-09-25 00:04:43,428 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-09-25 00:04:43,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:43,515 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-09-25 00:04:43,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:04:43,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-09-25 00:04:43,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:43,517 INFO L225 Difference]: With dead ends: 24 [2020-09-25 00:04:43,517 INFO L226 Difference]: Without dead ends: 19 [2020-09-25 00:04:43,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=17, Invalid=42, Unknown=1, NotChecked=12, Total=72 [2020-09-25 00:04:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-25 00:04:43,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-25 00:04:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-25 00:04:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-09-25 00:04:43,530 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-09-25 00:04:43,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:43,531 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-09-25 00:04:43,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:04:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-09-25 00:04:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 00:04:43,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:43,533 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:43,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:04:43,533 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:43,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:43,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1549412153, now seen corresponding path program 4 times [2020-09-25 00:04:43,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:43,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052732146] [2020-09-25 00:04:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:43,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:43,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:43,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 00:04:43,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:04:43,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-09-25 00:04:43,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:04:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:04:43,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:50,361 WARN L193 SmtUtils]: Spent 6.26 s on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2020-09-25 00:04:50,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:50,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:50,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:50,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:50,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:50,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:04:50,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:50,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:50,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052732146] [2020-09-25 00:04:50,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:50,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:04:50,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365465607] [2020-09-25 00:04:50,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:04:50,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:50,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:04:50,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:04:50,394 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 9 states. [2020-09-25 00:04:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:52,589 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-09-25 00:04:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:04:52,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-09-25 00:04:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:52,591 INFO L225 Difference]: With dead ends: 27 [2020-09-25 00:04:52,591 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 00:04:52,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:04:52,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 00:04:52,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-09-25 00:04:52,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-25 00:04:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-09-25 00:04:52,598 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-09-25 00:04:52,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:52,599 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-09-25 00:04:52,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:04:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-09-25 00:04:52,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 00:04:52,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:52,600 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:52,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:04:52,600 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:52,601 INFO L82 PathProgramCache]: Analyzing trace with hash -202735752, now seen corresponding path program 5 times [2020-09-25 00:04:52,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:52,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932509272] [2020-09-25 00:04:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:52,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:52,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:52,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:52,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:52,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:04:52,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:04:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 00:04:52,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:52,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:04:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 00:04:52,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:53,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:53,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:53,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:53,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:04:53,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:53,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:53,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932509272] [2020-09-25 00:04:53,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:53,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:04:53,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829788587] [2020-09-25 00:04:53,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:04:53,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:53,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:04:53,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:04:53,078 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2020-09-25 00:04:53,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:53,157 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-09-25 00:04:53,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:04:53,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-09-25 00:04:53,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:53,160 INFO L225 Difference]: With dead ends: 29 [2020-09-25 00:04:53,160 INFO L226 Difference]: Without dead ends: 24 [2020-09-25 00:04:53,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:04:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-25 00:04:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-09-25 00:04:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 00:04:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-25 00:04:53,173 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-09-25 00:04:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:53,173 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-25 00:04:53,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:04:53,174 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-25 00:04:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 00:04:53,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:53,175 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:53,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:04:53,175 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:53,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:53,176 INFO L82 PathProgramCache]: Analyzing trace with hash -389692425, now seen corresponding path program 6 times [2020-09-25 00:04:53,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:53,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172026430] [2020-09-25 00:04:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:53,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:53,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:53,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:53,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:04:53,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:04:53,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-09-25 00:04:53,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:04:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:04:53,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:53,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:53,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:53,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:53,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:53,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:53,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:04:53,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:53,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:53,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:53,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:53,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172026430] [2020-09-25 00:04:53,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:53,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:04:53,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555089151] [2020-09-25 00:04:53,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:04:53,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:53,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:04:53,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:04:53,746 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-09-25 00:04:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:53,839 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-09-25 00:04:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:04:53,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-09-25 00:04:53,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:53,841 INFO L225 Difference]: With dead ends: 31 [2020-09-25 00:04:53,842 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 00:04:53,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:04:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 00:04:53,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-09-25 00:04:53,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 00:04:53,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-09-25 00:04:53,852 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-09-25 00:04:53,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:53,852 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-09-25 00:04:53,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:04:53,853 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-09-25 00:04:53,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 00:04:53,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:53,855 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:53,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:04:53,855 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:53,856 INFO L82 PathProgramCache]: Analyzing trace with hash 333571254, now seen corresponding path program 7 times [2020-09-25 00:04:53,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:53,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274590218] [2020-09-25 00:04:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:54,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:54,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:54,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:04:54,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:04:54,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-25 00:04:54,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:04:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 00:04:54,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:54,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:54,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:54,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:54,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:04:54,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:54,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:04:54,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:54,430 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 00:04:54,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274590218] [2020-09-25 00:04:54,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:54,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 00:04:54,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319639453] [2020-09-25 00:04:54,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:04:54,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:54,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:04:54,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:04:54,434 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2020-09-25 00:04:54,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:54,466 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-09-25 00:04:54,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:04:54,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-25 00:04:54,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:54,467 INFO L225 Difference]: With dead ends: 25 [2020-09-25 00:04:54,467 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:04:54,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:04:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:04:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:04:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:04:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:04:54,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-09-25 00:04:54,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:54,469 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:04:54,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:04:54,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:04:54,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:04:54,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:04:54,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:05:00,893 WARN L193 SmtUtils]: Spent 6.27 s on a formula simplification. DAG size of input: 67 DAG size of output: 12 [2020-09-25 00:05:00,896 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 00:05:00,896 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:05:00,897 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:05:00,897 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:05:00,897 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:05:00,897 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:05:00,897 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 18) the Hoare annotation is: true [2020-09-25 00:05:00,897 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 18) no Hoare annotation was computed. [2020-09-25 00:05:00,897 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 00:05:00,897 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 18) no Hoare annotation was computed. [2020-09-25 00:05:00,897 INFO L264 CegarLoopResult]: At program point L13-2(lines 13 15) the Hoare annotation is: (<= (+ main_~x~0 (* 2 (div (+ (* main_~x~0 (- 1)) (- 268435441)) 2)) 268435442) 0) [2020-09-25 00:05:00,898 INFO L264 CegarLoopResult]: At program point L13-3(lines 13 15) the Hoare annotation is: (= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* .cse0 2) (* (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296) 4294967296)))) [2020-09-25 00:05:00,898 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 00:05:00,898 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 00:05:00,898 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 00:05:00,898 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 00:05:00,898 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 00:05:00,899 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 00:05:00,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:05:00 BoogieIcfgContainer [2020-09-25 00:05:00,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:05:00,919 INFO L168 Benchmark]: Toolchain (without parser) took 28840.83 ms. Allocated memory was 137.9 MB in the beginning and 249.6 MB in the end (delta: 111.7 MB). Free memory was 101.2 MB in the beginning and 96.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 116.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:00,920 INFO L168 Benchmark]: CDTParser took 0.24 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 00:05:00,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.80 ms. Allocated memory is still 137.9 MB. Free memory was 100.6 MB in the beginning and 91.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:00,922 INFO L168 Benchmark]: Boogie Preprocessor took 123.78 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 91.3 MB in the beginning and 179.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:00,923 INFO L168 Benchmark]: RCFGBuilder took 286.25 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 167.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:00,924 INFO L168 Benchmark]: TraceAbstraction took 28116.50 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 167.8 MB in the beginning and 96.5 MB in the end (delta: 71.3 MB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:00,928 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.80 ms. Allocated memory is still 137.9 MB. Free memory was 100.6 MB in the beginning and 91.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.78 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 91.3 MB in the beginning and 179.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.25 ms. Allocated memory is still 200.8 MB. Free memory was 179.2 MB in the beginning and 167.8 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28116.50 ms. Allocated memory was 200.8 MB in the beginning and 249.6 MB in the end (delta: 48.8 MB). Free memory was 167.8 MB in the beginning and 96.5 MB in the end (delta: 71.3 MB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 13]: Loop Invariant Derived loop invariant: x + 2 * ((x * -1 + -268435441) / 2) + 268435442 <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.5s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 36 SDslu, 311 SDs, 0 SdLazy, 359 SolverSat, 19 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 28 NumberOfFragments, 38 HoareAnnotationTreeSize, 15 FomulaSimplifications, 810 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 247 FormulaSimplificationTreeSizeReductionInter, 6.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 25342 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 36/140 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...