./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NonTermination4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 94b61e96441ca10668b436b4ef10dfd9464f0863 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:22:43,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:22:43,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:22:43,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:22:43,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:22:43,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:22:43,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:22:43,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:22:43,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:22:43,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:22:43,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:22:43,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:22:43,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:22:43,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:22:43,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:22:43,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:22:43,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:22:43,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:22:43,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:22:43,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:22:43,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:22:43,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:22:43,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:22:43,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:22:43,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:22:43,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:22:43,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:22:43,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:22:43,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:22:43,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:22:43,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:22:43,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:22:43,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:22:43,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:22:43,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:22:43,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:22:43,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:22:43,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:22:43,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:22:43,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:22:43,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:22:43,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 20:22:43,966 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:22:43,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:22:43,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:22:43,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:22:43,969 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:22:43,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:22:43,970 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:22:43,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:22:43,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:22:43,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 20:22:43,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:22:43,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 20:22:43,971 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 20:22:43,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 20:22:43,971 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:22:43,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 20:22:43,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:22:43,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:22:43,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:22:43,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:22:43,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:22:43,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:22:43,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:22:43,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 20:22:43,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:22:43,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:22:43,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 20:22:43,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:22:43,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2019-11-28 20:22:44,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:22:44,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:22:44,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:22:44,317 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:22:44,317 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:22:44,318 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-28 20:22:44,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecea0295b/54079bb3b7ff429aa4e50a2df6cb5d91/FLAG85d69a3b6 [2019-11-28 20:22:44,840 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:22:44,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-28 20:22:44,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecea0295b/54079bb3b7ff429aa4e50a2df6cb5d91/FLAG85d69a3b6 [2019-11-28 20:22:45,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecea0295b/54079bb3b7ff429aa4e50a2df6cb5d91 [2019-11-28 20:22:45,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:22:45,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 20:22:45,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:22:45,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:22:45,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:22:45,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:22:45" (1/1) ... [2019-11-28 20:22:45,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f57c6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45, skipping insertion in model container [2019-11-28 20:22:45,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:22:45" (1/1) ... [2019-11-28 20:22:45,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:22:45,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:22:45,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:22:45,505 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:22:45,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:22:45,542 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:22:45,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45 WrapperNode [2019-11-28 20:22:45,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:22:45,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 20:22:45,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 20:22:45,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 20:22:45,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45" (1/1) ... [2019-11-28 20:22:45,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45" (1/1) ... [2019-11-28 20:22:45,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 20:22:45,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:22:45,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:22:45,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:22:45,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45" (1/1) ... [2019-11-28 20:22:45,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45" (1/1) ... [2019-11-28 20:22:45,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45" (1/1) ... [2019-11-28 20:22:45,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45" (1/1) ... [2019-11-28 20:22:45,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45" (1/1) ... [2019-11-28 20:22:45,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45" (1/1) ... [2019-11-28 20:22:45,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45" (1/1) ... [2019-11-28 20:22:45,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:22:45,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:22:45,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:22:45,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:22:45,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-28 20:22:45,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:22:45,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:22:45,848 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:22:45,848 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 20:22:45,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:22:45 BoogieIcfgContainer [2019-11-28 20:22:45,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:22:45,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:22:45,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:22:45,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:22:45,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:22:45" (1/3) ... [2019-11-28 20:22:45,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64628ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:22:45, skipping insertion in model container [2019-11-28 20:22:45,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:22:45" (2/3) ... [2019-11-28 20:22:45,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64628ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:22:45, skipping insertion in model container [2019-11-28 20:22:45,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:22:45" (3/3) ... [2019-11-28 20:22:45,862 INFO L109 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2019-11-28 20:22:45,872 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:22:45,878 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 20:22:45,887 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 20:22:45,911 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:22:45,911 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 20:22:45,911 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:22:45,911 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:22:45,911 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:22:45,912 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:22:45,912 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:22:45,912 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:22:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-28 20:22:45,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-28 20:22:45,929 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:45,930 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-28 20:22:45,931 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:45,937 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-28 20:22:45,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:45,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951070079] [2019-11-28 20:22:45,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:46,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951070079] [2019-11-28 20:22:46,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:22:46,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:22:46,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252609791] [2019-11-28 20:22:46,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:22:46,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:46,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:22:46,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:46,089 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-28 20:22:46,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:46,182 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-28 20:22:46,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:22:46,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-28 20:22:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:46,199 INFO L225 Difference]: With dead ends: 22 [2019-11-28 20:22:46,199 INFO L226 Difference]: Without dead ends: 13 [2019-11-28 20:22:46,203 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:46,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-28 20:22:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-28 20:22:46,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 20:22:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-28 20:22:46,245 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-28 20:22:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:46,246 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-28 20:22:46,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:22:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-28 20:22:46,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 20:22:46,246 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:46,247 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 20:22:46,247 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:46,248 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-28 20:22:46,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:46,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742697234] [2019-11-28 20:22:46,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:46,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742697234] [2019-11-28 20:22:46,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:22:46,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:22:46,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466336297] [2019-11-28 20:22:46,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:22:46,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:46,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:22:46,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:46,271 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-11-28 20:22:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:46,306 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-28 20:22:46,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:22:46,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 20:22:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:46,308 INFO L225 Difference]: With dead ends: 12 [2019-11-28 20:22:46,308 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 20:22:46,309 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 20:22:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 20:22:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 20:22:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-28 20:22:46,314 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2019-11-28 20:22:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:46,315 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-28 20:22:46,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:22:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-28 20:22:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 20:22:46,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:46,316 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 20:22:46,316 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:46,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:46,317 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-11-28 20:22:46,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:46,318 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470513026] [2019-11-28 20:22:46,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:46,359 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470513026] [2019-11-28 20:22:46,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:22:46,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:22:46,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089201611] [2019-11-28 20:22:46,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:22:46,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:46,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:22:46,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:46,362 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2019-11-28 20:22:46,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:46,380 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-28 20:22:46,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:22:46,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 20:22:46,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:46,382 INFO L225 Difference]: With dead ends: 15 [2019-11-28 20:22:46,382 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 20:22:46,383 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 20:22:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-28 20:22:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 20:22:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-28 20:22:46,388 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2019-11-28 20:22:46,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:46,389 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-28 20:22:46,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:22:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-28 20:22:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 20:22:46,390 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:46,390 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 20:22:46,391 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:46,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:46,391 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-28 20:22:46,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:46,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280251536] [2019-11-28 20:22:46,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:46,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280251536] [2019-11-28 20:22:46,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:22:46,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 20:22:46,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25078263] [2019-11-28 20:22:46,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:22:46,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:46,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:22:46,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:46,421 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-11-28 20:22:46,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:46,435 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-28 20:22:46,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:22:46,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-28 20:22:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:46,438 INFO L225 Difference]: With dead ends: 13 [2019-11-28 20:22:46,438 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 20:22:46,438 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:22:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 20:22:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 20:22:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 20:22:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-28 20:22:46,443 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2019-11-28 20:22:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:46,444 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-28 20:22:46,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:22:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-28 20:22:46,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 20:22:46,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:46,445 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 20:22:46,445 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:46,446 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-11-28 20:22:46,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:46,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285665981] [2019-11-28 20:22:46,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:46,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285665981] [2019-11-28 20:22:46,485 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486233694] [2019-11-28 20:22:46,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:46,516 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 20:22:46,519 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:46,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:46,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-28 20:22:46,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898838437] [2019-11-28 20:22:46,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:22:46,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:46,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:22:46,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:22:46,548 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-11-28 20:22:46,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:46,580 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-28 20:22:46,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:22:46,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 20:22:46,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:46,582 INFO L225 Difference]: With dead ends: 17 [2019-11-28 20:22:46,582 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 20:22:46,583 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:22:46,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 20:22:46,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-28 20:22:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 20:22:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-28 20:22:46,587 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2019-11-28 20:22:46,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:46,588 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-28 20:22:46,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:22:46,588 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-28 20:22:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:22:46,589 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:46,589 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-28 20:22:46,790 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:46,791 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:46,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:46,792 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-28 20:22:46,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:46,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812753894] [2019-11-28 20:22:46,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:46,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:46,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812753894] [2019-11-28 20:22:46,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093416922] [2019-11-28 20:22:46,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:46,866 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 20:22:46,867 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:46,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:46,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-28 20:22:46,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374830447] [2019-11-28 20:22:46,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:22:46,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:46,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:22:46,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:22:46,882 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2019-11-28 20:22:46,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:46,901 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-28 20:22:46,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:22:46,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 20:22:46,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:46,902 INFO L225 Difference]: With dead ends: 19 [2019-11-28 20:22:46,903 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 20:22:46,903 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:22:46,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 20:22:46,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-28 20:22:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 20:22:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-28 20:22:46,908 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-11-28 20:22:46,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:46,909 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-28 20:22:46,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:22:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-28 20:22:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 20:22:46,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:46,910 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2019-11-28 20:22:47,113 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:47,118 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:47,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:47,119 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2019-11-28 20:22:47,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:47,119 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678387898] [2019-11-28 20:22:47,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:47,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678387898] [2019-11-28 20:22:47,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450290669] [2019-11-28 20:22:47,179 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:47,219 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:22:47,219 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:47,220 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:22:47,223 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:47,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:47,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-28 20:22:47,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753235187] [2019-11-28 20:22:47,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:22:47,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:47,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:22:47,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:22:47,255 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-11-28 20:22:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:47,295 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-28 20:22:47,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:22:47,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-28 20:22:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:47,296 INFO L225 Difference]: With dead ends: 22 [2019-11-28 20:22:47,297 INFO L226 Difference]: Without dead ends: 21 [2019-11-28 20:22:47,297 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:22:47,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-28 20:22:47,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-28 20:22:47,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 20:22:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-28 20:22:47,302 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2019-11-28 20:22:47,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:47,303 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-28 20:22:47,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:22:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-28 20:22:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 20:22:47,304 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:47,304 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-11-28 20:22:47,507 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:47,508 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:47,509 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-11-28 20:22:47,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:47,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478341980] [2019-11-28 20:22:47,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:47,574 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:47,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478341980] [2019-11-28 20:22:47,575 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657349646] [2019-11-28 20:22:47,575 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:47,606 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:22:47,607 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:47,607 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:22:47,610 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:47,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:47,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-28 20:22:47,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583942657] [2019-11-28 20:22:47,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:22:47,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:47,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:22:47,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:22:47,633 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-11-28 20:22:47,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:47,662 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-28 20:22:47,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:22:47,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-28 20:22:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:47,663 INFO L225 Difference]: With dead ends: 24 [2019-11-28 20:22:47,663 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 20:22:47,664 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:22:47,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 20:22:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-28 20:22:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 20:22:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-28 20:22:47,668 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2019-11-28 20:22:47,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:47,669 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-28 20:22:47,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:22:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-28 20:22:47,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:22:47,670 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:47,670 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2019-11-28 20:22:47,871 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:47,872 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:47,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:47,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2019-11-28 20:22:47,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:47,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389280123] [2019-11-28 20:22:47,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:47,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389280123] [2019-11-28 20:22:47,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625290069] [2019-11-28 20:22:47,966 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 20:22:48,001 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-28 20:22:48,004 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:48,009 INFO L264 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:22:48,010 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:48,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:48,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-28 20:22:48,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306577912] [2019-11-28 20:22:48,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:22:48,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:48,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:22:48,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:22:48,042 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2019-11-28 20:22:48,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:48,076 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-11-28 20:22:48,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:22:48,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-28 20:22:48,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:48,078 INFO L225 Difference]: With dead ends: 27 [2019-11-28 20:22:48,078 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 20:22:48,078 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:22:48,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 20:22:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-28 20:22:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 20:22:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-28 20:22:48,084 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2019-11-28 20:22:48,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:48,084 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-28 20:22:48,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:22:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-28 20:22:48,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 20:22:48,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:48,085 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-11-28 20:22:48,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:48,287 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:48,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-11-28 20:22:48,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:48,288 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410711108] [2019-11-28 20:22:48,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:48,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410711108] [2019-11-28 20:22:48,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181130812] [2019-11-28 20:22:48,338 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:48,368 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-28 20:22:48,368 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:48,369 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 20:22:48,370 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:48,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:48,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-28 20:22:48,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76698026] [2019-11-28 20:22:48,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:22:48,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:48,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:22:48,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:22:48,405 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2019-11-28 20:22:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:48,430 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-28 20:22:48,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:22:48,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-28 20:22:48,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:48,432 INFO L225 Difference]: With dead ends: 29 [2019-11-28 20:22:48,432 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 20:22:48,433 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:22:48,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 20:22:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-28 20:22:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 20:22:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-28 20:22:48,437 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2019-11-28 20:22:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:48,438 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-28 20:22:48,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:22:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-28 20:22:48,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 20:22:48,439 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:48,439 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2019-11-28 20:22:48,647 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:48,647 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:48,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2019-11-28 20:22:48,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:48,648 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005647137] [2019-11-28 20:22:48,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:48,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005647137] [2019-11-28 20:22:48,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257358341] [2019-11-28 20:22:48,737 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:48,767 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 20:22:48,768 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:48,769 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:22:48,770 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:48,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:48,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-28 20:22:48,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092471220] [2019-11-28 20:22:48,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:22:48,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:48,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:22:48,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:22:48,804 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2019-11-28 20:22:48,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:48,852 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-11-28 20:22:48,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:22:48,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2019-11-28 20:22:48,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:48,854 INFO L225 Difference]: With dead ends: 32 [2019-11-28 20:22:48,855 INFO L226 Difference]: Without dead ends: 31 [2019-11-28 20:22:48,855 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:22:48,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-28 20:22:48,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-11-28 20:22:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 20:22:48,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-11-28 20:22:48,861 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2019-11-28 20:22:48,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:48,861 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-11-28 20:22:48,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:22:48,862 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-11-28 20:22:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-28 20:22:48,863 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:48,863 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-11-28 20:22:49,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:49,066 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:49,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:49,067 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2019-11-28 20:22:49,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:49,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361726587] [2019-11-28 20:22:49,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:49,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361726587] [2019-11-28 20:22:49,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109906424] [2019-11-28 20:22:49,130 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:49,158 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 20:22:49,158 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:49,159 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 20:22:49,161 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:49,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:49,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-28 20:22:49,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907870362] [2019-11-28 20:22:49,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:22:49,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:49,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:22:49,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:22:49,215 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2019-11-28 20:22:49,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:49,254 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2019-11-28 20:22:49,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:22:49,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-28 20:22:49,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:49,255 INFO L225 Difference]: With dead ends: 34 [2019-11-28 20:22:49,255 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 20:22:49,260 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:22:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 20:22:49,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-28 20:22:49,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-28 20:22:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-11-28 20:22:49,270 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2019-11-28 20:22:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:49,271 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-11-28 20:22:49,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:22:49,271 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-11-28 20:22:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-28 20:22:49,272 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:49,273 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2019-11-28 20:22:49,475 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:49,476 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:49,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:49,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2019-11-28 20:22:49,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:49,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851637006] [2019-11-28 20:22:49,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:49,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851637006] [2019-11-28 20:22:49,577 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487250820] [2019-11-28 20:22:49,577 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:49,603 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-28 20:22:49,603 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:49,604 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 20:22:49,606 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:49,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:49,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-28 20:22:49,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191994929] [2019-11-28 20:22:49,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 20:22:49,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:49,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:22:49,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:22:49,666 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2019-11-28 20:22:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:49,708 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2019-11-28 20:22:49,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 20:22:49,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-11-28 20:22:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:49,709 INFO L225 Difference]: With dead ends: 37 [2019-11-28 20:22:49,710 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 20:22:49,710 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:22:49,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 20:22:49,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-11-28 20:22:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-28 20:22:49,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2019-11-28 20:22:49,716 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2019-11-28 20:22:49,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:49,716 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2019-11-28 20:22:49,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 20:22:49,716 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2019-11-28 20:22:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-28 20:22:49,717 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:49,717 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2019-11-28 20:22:49,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:49,921 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:49,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:49,922 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2019-11-28 20:22:49,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:49,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118909611] [2019-11-28 20:22:49,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:49,995 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118909611] [2019-11-28 20:22:49,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629217955] [2019-11-28 20:22:49,996 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:50,029 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-28 20:22:50,030 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:50,031 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 20:22:50,032 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:50,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:50,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-28 20:22:50,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636717993] [2019-11-28 20:22:50,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 20:22:50,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:50,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:22:50,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:22:50,108 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2019-11-28 20:22:50,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:50,136 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2019-11-28 20:22:50,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 20:22:50,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-28 20:22:50,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:50,137 INFO L225 Difference]: With dead ends: 39 [2019-11-28 20:22:50,138 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 20:22:50,138 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:22:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 20:22:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2019-11-28 20:22:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 20:22:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2019-11-28 20:22:50,143 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2019-11-28 20:22:50,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:50,144 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2019-11-28 20:22:50,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 20:22:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2019-11-28 20:22:50,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-28 20:22:50,145 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:50,145 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2019-11-28 20:22:50,354 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:50,354 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:50,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:50,354 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2019-11-28 20:22:50,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:50,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781124972] [2019-11-28 20:22:50,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:50,425 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781124972] [2019-11-28 20:22:50,425 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083016503] [2019-11-28 20:22:50,425 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:50,453 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-28 20:22:50,453 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:50,454 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 20:22:50,456 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:50,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:50,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-28 20:22:50,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397483218] [2019-11-28 20:22:50,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 20:22:50,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:50,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 20:22:50,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:22:50,536 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2019-11-28 20:22:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:50,579 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-11-28 20:22:50,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 20:22:50,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-11-28 20:22:50,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:50,584 INFO L225 Difference]: With dead ends: 42 [2019-11-28 20:22:50,584 INFO L226 Difference]: Without dead ends: 41 [2019-11-28 20:22:50,585 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:22:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-28 20:22:50,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-28 20:22:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 20:22:50,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-11-28 20:22:50,590 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2019-11-28 20:22:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:50,591 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-11-28 20:22:50,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 20:22:50,591 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-11-28 20:22:50,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-28 20:22:50,592 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:50,592 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2019-11-28 20:22:50,796 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:50,796 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:50,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:50,797 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2019-11-28 20:22:50,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:50,797 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776887966] [2019-11-28 20:22:50,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:50,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776887966] [2019-11-28 20:22:50,871 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106367830] [2019-11-28 20:22:50,871 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:50,904 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-28 20:22:50,904 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:50,905 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 20:22:50,906 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:50,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:50,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-28 20:22:50,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482304551] [2019-11-28 20:22:50,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 20:22:50,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:50,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 20:22:50,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:22:50,974 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2019-11-28 20:22:51,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:51,009 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2019-11-28 20:22:51,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 20:22:51,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2019-11-28 20:22:51,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:51,011 INFO L225 Difference]: With dead ends: 44 [2019-11-28 20:22:51,011 INFO L226 Difference]: Without dead ends: 43 [2019-11-28 20:22:51,012 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:22:51,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-28 20:22:51,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-11-28 20:22:51,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-28 20:22:51,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-11-28 20:22:51,017 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2019-11-28 20:22:51,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:51,017 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2019-11-28 20:22:51,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 20:22:51,018 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2019-11-28 20:22:51,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-28 20:22:51,018 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:51,019 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2019-11-28 20:22:51,221 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:51,222 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:51,223 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2019-11-28 20:22:51,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:51,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856802340] [2019-11-28 20:22:51,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:51,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856802340] [2019-11-28 20:22:51,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986825544] [2019-11-28 20:22:51,313 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:51,335 INFO L264 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 20:22:51,336 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:51,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:51,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-28 20:22:51,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548844392] [2019-11-28 20:22:51,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 20:22:51,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:51,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 20:22:51,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:22:51,390 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2019-11-28 20:22:51,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:51,444 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2019-11-28 20:22:51,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 20:22:51,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-28 20:22:51,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:51,445 INFO L225 Difference]: With dead ends: 47 [2019-11-28 20:22:51,445 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 20:22:51,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:22:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 20:22:51,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2019-11-28 20:22:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 20:22:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2019-11-28 20:22:51,450 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2019-11-28 20:22:51,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:51,451 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2019-11-28 20:22:51,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 20:22:51,451 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2019-11-28 20:22:51,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-28 20:22:51,452 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:51,452 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2019-11-28 20:22:51,654 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:51,655 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:51,656 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2019-11-28 20:22:51,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:51,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069168208] [2019-11-28 20:22:51,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:51,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069168208] [2019-11-28 20:22:51,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741145415] [2019-11-28 20:22:51,740 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:51,767 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 20:22:51,768 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:51,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:51,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-28 20:22:51,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156583858] [2019-11-28 20:22:51,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 20:22:51,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:51,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 20:22:51,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:22:51,833 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2019-11-28 20:22:51,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:51,864 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2019-11-28 20:22:51,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 20:22:51,865 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-11-28 20:22:51,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:51,865 INFO L225 Difference]: With dead ends: 49 [2019-11-28 20:22:51,866 INFO L226 Difference]: Without dead ends: 48 [2019-11-28 20:22:51,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-28 20:22:51,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-28 20:22:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2019-11-28 20:22:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-28 20:22:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2019-11-28 20:22:51,871 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2019-11-28 20:22:51,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:51,871 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2019-11-28 20:22:51,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 20:22:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2019-11-28 20:22:51,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-28 20:22:51,872 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:51,872 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2019-11-28 20:22:52,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:52,080 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:52,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2019-11-28 20:22:52,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:52,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542591419] [2019-11-28 20:22:52,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:52,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542591419] [2019-11-28 20:22:52,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802020766] [2019-11-28 20:22:52,164 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:52,193 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:22:52,194 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:52,194 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 20:22:52,196 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:52,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:52,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-28 20:22:52,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966724312] [2019-11-28 20:22:52,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 20:22:52,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:52,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 20:22:52,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-28 20:22:52,275 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2019-11-28 20:22:52,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:52,335 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2019-11-28 20:22:52,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 20:22:52,335 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2019-11-28 20:22:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:52,336 INFO L225 Difference]: With dead ends: 52 [2019-11-28 20:22:52,336 INFO L226 Difference]: Without dead ends: 51 [2019-11-28 20:22:52,337 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-28 20:22:52,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-28 20:22:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2019-11-28 20:22:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-28 20:22:52,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2019-11-28 20:22:52,343 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2019-11-28 20:22:52,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:52,343 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2019-11-28 20:22:52,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 20:22:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2019-11-28 20:22:52,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-28 20:22:52,344 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:52,345 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2019-11-28 20:22:52,552 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:52,553 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:52,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:52,553 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2019-11-28 20:22:52,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:52,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678507109] [2019-11-28 20:22:52,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:52,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678507109] [2019-11-28 20:22:52,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166252796] [2019-11-28 20:22:52,656 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:52,688 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:22:52,688 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:52,689 INFO L264 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 20:22:52,691 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:52,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:52,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-28 20:22:52,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502050820] [2019-11-28 20:22:52,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 20:22:52,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:52,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 20:22:52,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-28 20:22:52,777 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2019-11-28 20:22:52,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:52,820 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-11-28 20:22:52,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 20:22:52,820 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2019-11-28 20:22:52,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:52,821 INFO L225 Difference]: With dead ends: 54 [2019-11-28 20:22:52,821 INFO L226 Difference]: Without dead ends: 53 [2019-11-28 20:22:52,821 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-28 20:22:52,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-28 20:22:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-11-28 20:22:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-28 20:22:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-11-28 20:22:52,826 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2019-11-28 20:22:52,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:52,827 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-11-28 20:22:52,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 20:22:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-11-28 20:22:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-28 20:22:52,828 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:52,828 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2019-11-28 20:22:53,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:53,032 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:53,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2019-11-28 20:22:53,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:53,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055046440] [2019-11-28 20:22:53,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:53,150 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055046440] [2019-11-28 20:22:53,150 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669087775] [2019-11-28 20:22:53,150 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:53,186 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-28 20:22:53,186 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:53,187 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 20:22:53,188 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:53,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:53,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-28 20:22:53,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983767893] [2019-11-28 20:22:53,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 20:22:53,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:53,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 20:22:53,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:22:53,269 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2019-11-28 20:22:53,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:53,339 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2019-11-28 20:22:53,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 20:22:53,340 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2019-11-28 20:22:53,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:53,341 INFO L225 Difference]: With dead ends: 57 [2019-11-28 20:22:53,341 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 20:22:53,341 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:22:53,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 20:22:53,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2019-11-28 20:22:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-28 20:22:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2019-11-28 20:22:53,345 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2019-11-28 20:22:53,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:53,346 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2019-11-28 20:22:53,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 20:22:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2019-11-28 20:22:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-28 20:22:53,347 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:53,347 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2019-11-28 20:22:53,551 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:53,551 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:53,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:53,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2019-11-28 20:22:53,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:53,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44979190] [2019-11-28 20:22:53,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:53,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44979190] [2019-11-28 20:22:53,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495325421] [2019-11-28 20:22:53,650 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:53,680 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-28 20:22:53,680 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:53,681 INFO L264 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 20:22:53,685 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:53,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:53,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-28 20:22:53,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963270739] [2019-11-28 20:22:53,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 20:22:53,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:53,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 20:22:53,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:22:53,774 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2019-11-28 20:22:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:53,811 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2019-11-28 20:22:53,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 20:22:53,811 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-11-28 20:22:53,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:53,812 INFO L225 Difference]: With dead ends: 59 [2019-11-28 20:22:53,812 INFO L226 Difference]: Without dead ends: 58 [2019-11-28 20:22:53,813 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-28 20:22:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-28 20:22:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2019-11-28 20:22:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-28 20:22:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2019-11-28 20:22:53,817 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2019-11-28 20:22:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:53,818 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2019-11-28 20:22:53,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 20:22:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2019-11-28 20:22:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-28 20:22:53,819 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:53,819 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2019-11-28 20:22:54,025 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:54,025 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:54,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:54,026 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2019-11-28 20:22:54,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:54,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56001350] [2019-11-28 20:22:54,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:54,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56001350] [2019-11-28 20:22:54,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890685060] [2019-11-28 20:22:54,167 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:54,207 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 20:22:54,207 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:54,208 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 20:22:54,209 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:54,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:54,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-28 20:22:54,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988875259] [2019-11-28 20:22:54,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 20:22:54,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:54,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 20:22:54,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-28 20:22:54,355 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2019-11-28 20:22:54,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:54,420 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2019-11-28 20:22:54,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 20:22:54,420 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2019-11-28 20:22:54,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:54,422 INFO L225 Difference]: With dead ends: 62 [2019-11-28 20:22:54,422 INFO L226 Difference]: Without dead ends: 61 [2019-11-28 20:22:54,423 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-28 20:22:54,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-28 20:22:54,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2019-11-28 20:22:54,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-28 20:22:54,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2019-11-28 20:22:54,435 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2019-11-28 20:22:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:54,436 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2019-11-28 20:22:54,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 20:22:54,436 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2019-11-28 20:22:54,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-28 20:22:54,440 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:54,440 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-11-28 20:22:54,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:54,647 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:54,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:54,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2019-11-28 20:22:54,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:54,649 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014291229] [2019-11-28 20:22:54,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:54,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014291229] [2019-11-28 20:22:54,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827556001] [2019-11-28 20:22:54,800 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:54,856 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 20:22:54,856 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:54,857 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 20:22:54,859 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:54,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:54,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-28 20:22:54,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462746078] [2019-11-28 20:22:54,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 20:22:54,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:54,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 20:22:54,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-28 20:22:54,997 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2019-11-28 20:22:55,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:55,037 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-11-28 20:22:55,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 20:22:55,038 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2019-11-28 20:22:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:55,038 INFO L225 Difference]: With dead ends: 64 [2019-11-28 20:22:55,038 INFO L226 Difference]: Without dead ends: 63 [2019-11-28 20:22:55,039 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-28 20:22:55,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-28 20:22:55,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-11-28 20:22:55,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-28 20:22:55,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2019-11-28 20:22:55,043 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2019-11-28 20:22:55,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:55,043 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2019-11-28 20:22:55,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 20:22:55,044 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2019-11-28 20:22:55,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-28 20:22:55,044 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:55,045 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2019-11-28 20:22:55,247 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:55,248 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:55,249 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2019-11-28 20:22:55,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:55,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754792505] [2019-11-28 20:22:55,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:55,366 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754792505] [2019-11-28 20:22:55,366 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431095002] [2019-11-28 20:22:55,366 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:55,410 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-28 20:22:55,410 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:55,411 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 20:22:55,412 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:55,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:55,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-28 20:22:55,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153966177] [2019-11-28 20:22:55,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 20:22:55,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:55,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 20:22:55,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:22:55,544 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2019-11-28 20:22:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:55,601 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2019-11-28 20:22:55,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 20:22:55,602 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2019-11-28 20:22:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:55,603 INFO L225 Difference]: With dead ends: 67 [2019-11-28 20:22:55,603 INFO L226 Difference]: Without dead ends: 66 [2019-11-28 20:22:55,604 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:22:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-28 20:22:55,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2019-11-28 20:22:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-28 20:22:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2019-11-28 20:22:55,608 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2019-11-28 20:22:55,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:55,608 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2019-11-28 20:22:55,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 20:22:55,609 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2019-11-28 20:22:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-28 20:22:55,609 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:55,610 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2019-11-28 20:22:55,813 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:55,813 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:55,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:55,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2019-11-28 20:22:55,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:55,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094981884] [2019-11-28 20:22:55,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:55,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094981884] [2019-11-28 20:22:55,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748387106] [2019-11-28 20:22:55,937 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:55,973 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-28 20:22:55,973 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:55,974 INFO L264 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 20:22:55,975 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:56,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:56,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-28 20:22:56,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610053179] [2019-11-28 20:22:56,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 20:22:56,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:56,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 20:22:56,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:22:56,093 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2019-11-28 20:22:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:56,133 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2019-11-28 20:22:56,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 20:22:56,133 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2019-11-28 20:22:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:56,134 INFO L225 Difference]: With dead ends: 69 [2019-11-28 20:22:56,134 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 20:22:56,135 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-28 20:22:56,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 20:22:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2019-11-28 20:22:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-28 20:22:56,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2019-11-28 20:22:56,139 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2019-11-28 20:22:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:56,139 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2019-11-28 20:22:56,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 20:22:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2019-11-28 20:22:56,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-28 20:22:56,140 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:56,140 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2019-11-28 20:22:56,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:56,344 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:56,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:56,345 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2019-11-28 20:22:56,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:56,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880954159] [2019-11-28 20:22:56,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:56,497 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880954159] [2019-11-28 20:22:56,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073137477] [2019-11-28 20:22:56,498 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:56,555 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-28 20:22:56,555 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:56,557 INFO L264 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 20:22:56,558 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:56,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:56,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-11-28 20:22:56,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797020271] [2019-11-28 20:22:56,718 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-28 20:22:56,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:56,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-28 20:22:56,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-28 20:22:56,719 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2019-11-28 20:22:56,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:56,774 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2019-11-28 20:22:56,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 20:22:56,775 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2019-11-28 20:22:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:56,776 INFO L225 Difference]: With dead ends: 72 [2019-11-28 20:22:56,776 INFO L226 Difference]: Without dead ends: 71 [2019-11-28 20:22:56,777 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-28 20:22:56,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-28 20:22:56,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2019-11-28 20:22:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-28 20:22:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2019-11-28 20:22:56,780 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2019-11-28 20:22:56,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:56,780 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2019-11-28 20:22:56,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-28 20:22:56,781 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2019-11-28 20:22:56,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-28 20:22:56,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:56,782 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2019-11-28 20:22:56,985 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:56,986 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:56,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:56,987 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2019-11-28 20:22:56,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:56,987 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621016850] [2019-11-28 20:22:56,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:57,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621016850] [2019-11-28 20:22:57,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920377935] [2019-11-28 20:22:57,117 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:57,158 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-28 20:22:57,159 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:57,160 INFO L264 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 20:22:57,161 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:57,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:57,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-11-28 20:22:57,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563973254] [2019-11-28 20:22:57,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-28 20:22:57,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:57,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-28 20:22:57,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-28 20:22:57,295 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2019-11-28 20:22:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:57,352 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2019-11-28 20:22:57,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 20:22:57,352 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2019-11-28 20:22:57,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:57,353 INFO L225 Difference]: With dead ends: 74 [2019-11-28 20:22:57,353 INFO L226 Difference]: Without dead ends: 73 [2019-11-28 20:22:57,353 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-28 20:22:57,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-28 20:22:57,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2019-11-28 20:22:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-28 20:22:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2019-11-28 20:22:57,357 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2019-11-28 20:22:57,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:57,357 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2019-11-28 20:22:57,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-28 20:22:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2019-11-28 20:22:57,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-28 20:22:57,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:57,358 INFO L410 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2019-11-28 20:22:57,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:57,559 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:57,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:57,559 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2019-11-28 20:22:57,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:57,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358589067] [2019-11-28 20:22:57,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:57,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358589067] [2019-11-28 20:22:57,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537594089] [2019-11-28 20:22:57,705 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:57,739 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 20:22:57,740 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:57,898 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:57,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:57,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-28 20:22:57,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141111890] [2019-11-28 20:22:57,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-28 20:22:57,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:57,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-28 20:22:57,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-28 20:22:57,902 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2019-11-28 20:22:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:57,965 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2019-11-28 20:22:57,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-28 20:22:57,965 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2019-11-28 20:22:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:57,966 INFO L225 Difference]: With dead ends: 77 [2019-11-28 20:22:57,966 INFO L226 Difference]: Without dead ends: 76 [2019-11-28 20:22:57,967 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-28 20:22:57,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-28 20:22:57,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2019-11-28 20:22:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-28 20:22:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2019-11-28 20:22:57,972 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2019-11-28 20:22:57,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:57,972 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2019-11-28 20:22:57,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-28 20:22:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2019-11-28 20:22:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-28 20:22:57,973 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:57,973 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2019-11-28 20:22:58,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:58,177 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:58,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:58,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2019-11-28 20:22:58,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:58,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936012947] [2019-11-28 20:22:58,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:58,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936012947] [2019-11-28 20:22:58,364 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067248693] [2019-11-28 20:22:58,365 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:58,400 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 20:22:58,401 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:58,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:58,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-28 20:22:58,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927287002] [2019-11-28 20:22:58,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-28 20:22:58,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:58,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-28 20:22:58,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-28 20:22:58,580 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2019-11-28 20:22:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:58,627 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2019-11-28 20:22:58,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-28 20:22:58,627 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2019-11-28 20:22:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:58,628 INFO L225 Difference]: With dead ends: 79 [2019-11-28 20:22:58,628 INFO L226 Difference]: Without dead ends: 78 [2019-11-28 20:22:58,629 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-28 20:22:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-28 20:22:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2019-11-28 20:22:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-28 20:22:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2019-11-28 20:22:58,632 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2019-11-28 20:22:58,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:58,633 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2019-11-28 20:22:58,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-28 20:22:58,633 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2019-11-28 20:22:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-28 20:22:58,634 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:58,634 INFO L410 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2019-11-28 20:22:58,838 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:58,838 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:58,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:58,839 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2019-11-28 20:22:58,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:58,840 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316462191] [2019-11-28 20:22:58,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:58,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316462191] [2019-11-28 20:22:58,999 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665253468] [2019-11-28 20:22:59,000 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:59,034 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:22:59,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:59,035 INFO L264 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-28 20:22:59,036 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:59,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:59,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-11-28 20:22:59,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582564209] [2019-11-28 20:22:59,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 20:22:59,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:59,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 20:22:59,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-28 20:22:59,185 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2019-11-28 20:22:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:59,259 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2019-11-28 20:22:59,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-28 20:22:59,259 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2019-11-28 20:22:59,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:59,260 INFO L225 Difference]: With dead ends: 82 [2019-11-28 20:22:59,260 INFO L226 Difference]: Without dead ends: 81 [2019-11-28 20:22:59,261 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-28 20:22:59,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-11-28 20:22:59,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2019-11-28 20:22:59,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-28 20:22:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2019-11-28 20:22:59,264 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2019-11-28 20:22:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:59,264 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2019-11-28 20:22:59,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 20:22:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2019-11-28 20:22:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-28 20:22:59,265 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:59,265 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2019-11-28 20:22:59,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:59,469 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:22:59,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:22:59,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2019-11-28 20:22:59,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:22:59,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687680199] [2019-11-28 20:22:59,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:22:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:22:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:59,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687680199] [2019-11-28 20:22:59,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819819962] [2019-11-28 20:22:59,632 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:22:59,666 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 20:22:59,666 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:22:59,667 INFO L264 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-28 20:22:59,668 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:22:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:22:59,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:22:59,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-11-28 20:22:59,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329910830] [2019-11-28 20:22:59,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 20:22:59,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:22:59,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 20:22:59,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-28 20:22:59,834 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2019-11-28 20:22:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:22:59,892 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2019-11-28 20:22:59,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-28 20:22:59,893 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2019-11-28 20:22:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:22:59,893 INFO L225 Difference]: With dead ends: 84 [2019-11-28 20:22:59,893 INFO L226 Difference]: Without dead ends: 83 [2019-11-28 20:22:59,894 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-28 20:22:59,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-28 20:22:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2019-11-28 20:22:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-28 20:22:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2019-11-28 20:22:59,898 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2019-11-28 20:22:59,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:22:59,898 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2019-11-28 20:22:59,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 20:22:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2019-11-28 20:22:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-28 20:22:59,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:22:59,899 INFO L410 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2019-11-28 20:23:00,102 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:00,103 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:00,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:00,103 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2019-11-28 20:23:00,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:00,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076762938] [2019-11-28 20:23:00,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:00,263 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076762938] [2019-11-28 20:23:00,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243982823] [2019-11-28 20:23:00,264 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:00,306 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-28 20:23:00,306 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:23:00,307 INFO L264 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-28 20:23:00,309 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:00,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:23:00,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-28 20:23:00,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516528186] [2019-11-28 20:23:00,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-28 20:23:00,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:00,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-28 20:23:00,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-28 20:23:00,490 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2019-11-28 20:23:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:00,568 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2019-11-28 20:23:00,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-28 20:23:00,569 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2019-11-28 20:23:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:00,570 INFO L225 Difference]: With dead ends: 87 [2019-11-28 20:23:00,570 INFO L226 Difference]: Without dead ends: 86 [2019-11-28 20:23:00,571 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-28 20:23:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-11-28 20:23:00,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2019-11-28 20:23:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-28 20:23:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2019-11-28 20:23:00,575 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2019-11-28 20:23:00,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:00,575 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2019-11-28 20:23:00,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-28 20:23:00,575 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2019-11-28 20:23:00,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-28 20:23:00,576 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:00,576 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2019-11-28 20:23:00,779 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:00,780 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:00,780 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2019-11-28 20:23:00,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:00,781 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042780886] [2019-11-28 20:23:00,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:00,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042780886] [2019-11-28 20:23:00,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055161862] [2019-11-28 20:23:00,973 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:01,011 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-28 20:23:01,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:23:01,012 INFO L264 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-28 20:23:01,013 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:01,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:23:01,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-28 20:23:01,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861470415] [2019-11-28 20:23:01,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-28 20:23:01,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:01,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-28 20:23:01,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-28 20:23:01,188 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2019-11-28 20:23:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:01,244 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2019-11-28 20:23:01,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-28 20:23:01,245 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2019-11-28 20:23:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:01,246 INFO L225 Difference]: With dead ends: 89 [2019-11-28 20:23:01,246 INFO L226 Difference]: Without dead ends: 88 [2019-11-28 20:23:01,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-28 20:23:01,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-28 20:23:01,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2019-11-28 20:23:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-28 20:23:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2019-11-28 20:23:01,250 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2019-11-28 20:23:01,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:01,251 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2019-11-28 20:23:01,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-28 20:23:01,251 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2019-11-28 20:23:01,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-28 20:23:01,252 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:01,252 INFO L410 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2019-11-28 20:23:01,455 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:01,455 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:01,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:01,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2019-11-28 20:23:01,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:01,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215422207] [2019-11-28 20:23:01,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:01,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215422207] [2019-11-28 20:23:01,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095024726] [2019-11-28 20:23:01,687 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:01,736 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 20:23:01,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:23:01,738 INFO L264 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-28 20:23:01,739 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:02,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:23:02,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-11-28 20:23:02,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134665730] [2019-11-28 20:23:02,031 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-28 20:23:02,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:02,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-28 20:23:02,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-28 20:23:02,032 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2019-11-28 20:23:02,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:02,110 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2019-11-28 20:23:02,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-28 20:23:02,111 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2019-11-28 20:23:02,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:02,111 INFO L225 Difference]: With dead ends: 92 [2019-11-28 20:23:02,111 INFO L226 Difference]: Without dead ends: 91 [2019-11-28 20:23:02,112 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-28 20:23:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-28 20:23:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2019-11-28 20:23:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-28 20:23:02,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2019-11-28 20:23:02,115 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2019-11-28 20:23:02,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:02,116 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2019-11-28 20:23:02,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-28 20:23:02,116 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2019-11-28 20:23:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-28 20:23:02,117 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:02,117 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2019-11-28 20:23:02,320 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:02,321 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:02,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:02,322 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2019-11-28 20:23:02,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:02,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754321679] [2019-11-28 20:23:02,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:02,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754321679] [2019-11-28 20:23:02,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80400537] [2019-11-28 20:23:02,513 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:02,553 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 20:23:02,553 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:23:02,555 INFO L264 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-28 20:23:02,557 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:02,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:23:02,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-11-28 20:23:02,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751742480] [2019-11-28 20:23:02,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-28 20:23:02,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:02,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-28 20:23:02,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-28 20:23:02,864 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2019-11-28 20:23:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:02,934 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2019-11-28 20:23:02,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-28 20:23:02,935 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2019-11-28 20:23:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:02,936 INFO L225 Difference]: With dead ends: 94 [2019-11-28 20:23:02,937 INFO L226 Difference]: Without dead ends: 93 [2019-11-28 20:23:02,937 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-28 20:23:02,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-28 20:23:02,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2019-11-28 20:23:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-28 20:23:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2019-11-28 20:23:02,943 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2019-11-28 20:23:02,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:02,944 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2019-11-28 20:23:02,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-28 20:23:02,944 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2019-11-28 20:23:02,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-28 20:23:02,945 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:02,945 INFO L410 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2019-11-28 20:23:03,150 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:03,150 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:03,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:03,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2019-11-28 20:23:03,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:03,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549045722] [2019-11-28 20:23:03,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:03,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549045722] [2019-11-28 20:23:03,370 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329302440] [2019-11-28 20:23:03,370 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:03,417 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-28 20:23:03,418 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:23:03,419 INFO L264 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-28 20:23:03,420 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:03,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:23:03,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-28 20:23:03,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544609296] [2019-11-28 20:23:03,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-28 20:23:03,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:03,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-28 20:23:03,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-28 20:23:03,612 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2019-11-28 20:23:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:03,706 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2019-11-28 20:23:03,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-28 20:23:03,706 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2019-11-28 20:23:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:03,708 INFO L225 Difference]: With dead ends: 97 [2019-11-28 20:23:03,708 INFO L226 Difference]: Without dead ends: 96 [2019-11-28 20:23:03,708 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-28 20:23:03,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-28 20:23:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2019-11-28 20:23:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-28 20:23:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2019-11-28 20:23:03,712 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2019-11-28 20:23:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:03,713 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2019-11-28 20:23:03,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-28 20:23:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2019-11-28 20:23:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-28 20:23:03,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:03,714 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2019-11-28 20:23:03,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:03,917 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:03,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:03,918 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2019-11-28 20:23:03,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:03,919 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623055822] [2019-11-28 20:23:03,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:04,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623055822] [2019-11-28 20:23:04,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523700305] [2019-11-28 20:23:04,134 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:04,177 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-28 20:23:04,177 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:23:04,178 INFO L264 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-28 20:23:04,180 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:04,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:23:04,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-28 20:23:04,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097334780] [2019-11-28 20:23:04,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-28 20:23:04,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:04,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-28 20:23:04,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-28 20:23:04,378 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2019-11-28 20:23:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:04,440 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2019-11-28 20:23:04,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-28 20:23:04,441 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2019-11-28 20:23:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:04,442 INFO L225 Difference]: With dead ends: 99 [2019-11-28 20:23:04,442 INFO L226 Difference]: Without dead ends: 98 [2019-11-28 20:23:04,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-28 20:23:04,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-28 20:23:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2019-11-28 20:23:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-28 20:23:04,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2019-11-28 20:23:04,447 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2019-11-28 20:23:04,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:04,447 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2019-11-28 20:23:04,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-28 20:23:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2019-11-28 20:23:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-28 20:23:04,448 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:04,448 INFO L410 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2019-11-28 20:23:04,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:04,652 INFO L410 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:04,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:04,652 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2019-11-28 20:23:04,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:04,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696471397] [2019-11-28 20:23:04,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:04,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696471397] [2019-11-28 20:23:04,906 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119519691] [2019-11-28 20:23:04,906 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:04,950 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-28 20:23:04,950 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:23:04,951 INFO L264 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-28 20:23:04,953 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:05,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:23:05,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-11-28 20:23:05,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16760532] [2019-11-28 20:23:05,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-28 20:23:05,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:05,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-28 20:23:05,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-28 20:23:05,270 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2019-11-28 20:23:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:05,351 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2019-11-28 20:23:05,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-28 20:23:05,351 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2019-11-28 20:23:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:05,352 INFO L225 Difference]: With dead ends: 102 [2019-11-28 20:23:05,352 INFO L226 Difference]: Without dead ends: 101 [2019-11-28 20:23:05,352 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-28 20:23:05,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-28 20:23:05,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2019-11-28 20:23:05,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-28 20:23:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2019-11-28 20:23:05,355 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2019-11-28 20:23:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:05,356 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2019-11-28 20:23:05,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-28 20:23:05,356 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2019-11-28 20:23:05,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-28 20:23:05,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:05,357 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2019-11-28 20:23:05,560 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:05,561 INFO L410 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:05,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:05,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2019-11-28 20:23:05,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:05,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709113229] [2019-11-28 20:23:05,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:05,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709113229] [2019-11-28 20:23:05,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073452138] [2019-11-28 20:23:05,782 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:05,825 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-28 20:23:05,825 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 20:23:05,826 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-28 20:23:05,827 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:06,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:23:06,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-11-28 20:23:06,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110665569] [2019-11-28 20:23:06,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-28 20:23:06,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:06,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-28 20:23:06,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-28 20:23:06,051 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2019-11-28 20:23:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:06,126 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2019-11-28 20:23:06,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-28 20:23:06,127 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2019-11-28 20:23:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:06,128 INFO L225 Difference]: With dead ends: 104 [2019-11-28 20:23:06,128 INFO L226 Difference]: Without dead ends: 103 [2019-11-28 20:23:06,128 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-28 20:23:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-28 20:23:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2019-11-28 20:23:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-28 20:23:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2019-11-28 20:23:06,132 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2019-11-28 20:23:06,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:06,132 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2019-11-28 20:23:06,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-28 20:23:06,133 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2019-11-28 20:23:06,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-28 20:23:06,133 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:06,133 INFO L410 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2019-11-28 20:23:06,337 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:06,338 INFO L410 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:06,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:06,338 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2019-11-28 20:23:06,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:06,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865482178] [2019-11-28 20:23:06,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:06,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865482178] [2019-11-28 20:23:06,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260260280] [2019-11-28 20:23:06,570 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:23:06,618 INFO L264 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-28 20:23:06,619 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:23:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:23:06,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 20:23:06,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-11-28 20:23:06,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648164486] [2019-11-28 20:23:06,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-28 20:23:06,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:23:06,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-28 20:23:06,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-28 20:23:06,827 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2019-11-28 20:23:06,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:23:06,924 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2019-11-28 20:23:06,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-28 20:23:06,925 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2019-11-28 20:23:06,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:23:06,925 INFO L225 Difference]: With dead ends: 107 [2019-11-28 20:23:06,925 INFO L226 Difference]: Without dead ends: 106 [2019-11-28 20:23:06,926 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-28 20:23:06,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-28 20:23:06,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2019-11-28 20:23:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-28 20:23:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2019-11-28 20:23:06,930 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2019-11-28 20:23:06,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:23:06,930 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2019-11-28 20:23:06,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-28 20:23:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2019-11-28 20:23:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-28 20:23:06,931 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:23:06,932 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2019-11-28 20:23:07,132 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 20:23:07,132 INFO L410 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 20:23:07,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:23:07,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2019-11-28 20:23:07,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:23:07,133 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716337372] [2019-11-28 20:23:07,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:23:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:23:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:23:07,206 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:23:07,207 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:23:07,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:23:07 BoogieIcfgContainer [2019-11-28 20:23:07,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:23:07,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:23:07,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:23:07,254 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:23:07,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:22:45" (3/4) ... [2019-11-28 20:23:07,258 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:23:07,395 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:23:07,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:23:07,399 INFO L168 Benchmark]: Toolchain (without parser) took 22129.51 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 339.2 MB). Free memory was 952.3 MB in the beginning and 977.2 MB in the end (delta: -24.9 MB). Peak memory consumption was 314.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:07,409 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:23:07,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.87 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:07,411 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -174.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:07,411 INFO L168 Benchmark]: Boogie Preprocessor took 18.33 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:23:07,411 INFO L168 Benchmark]: RCFGBuilder took 202.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:07,412 INFO L168 Benchmark]: TraceAbstraction took 21401.80 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 219.2 MB). Free memory was 1.1 GB in the beginning and 987.2 MB in the end (delta: 109.6 MB). Peak memory consumption was 328.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:07,412 INFO L168 Benchmark]: Witness Printer took 143.17 ms. Allocated memory is still 1.4 GB. Free memory was 987.2 MB in the beginning and 977.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-11-28 20:23:07,415 INFO L335 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 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.87 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 85.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -174.9 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.33 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 202.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 21401.80 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 219.2 MB). Free memory was 1.1 GB in the beginning and 987.2 MB in the end (delta: 109.6 MB). Peak memory consumption was 328.7 MB. Max. memory is 11.5 GB. * Witness Printer took 143.17 ms. Allocated memory is still 1.4 GB. Free memory was 987.2 MB in the beginning and 977.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] 3*y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: UNSAFE, OverallTime: 21.2s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1318 SDs, 0 SdLazy, 1445 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 41 MinimizatonAttempts, 39 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 4022 NumberOfCodeBlocks, 4022 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 3844 ConstructedInterpolants, 0 QuantifiedInterpolants, 753036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3617 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 0/23218 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...