./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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 0.1.25-9a8b2e8 [2020-10-20 06:22:14,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:22:14,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:22:15,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:22:15,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:22:15,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:22:15,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:22:15,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:22:15,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:22:15,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:22:15,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:22:15,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:22:15,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:22:15,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:22:15,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:22:15,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:22:15,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:22:15,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:22:15,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:22:15,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:22:15,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:22:15,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:22:15,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:22:15,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:22:15,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:22:15,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:22:15,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:22:15,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:22:15,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:22:15,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:22:15,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:22:15,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:22:15,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:22:15,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:22:15,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:22:15,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:22:15,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:22:15,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:22:15,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:22:15,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:22:15,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:22:15,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:22:15,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:22:15,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:22:15,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:22:15,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:22:15,141 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:22:15,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:22:15,142 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:22:15,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:22:15,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:22:15,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:22:15,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:22:15,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:22:15,144 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:22:15,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:22:15,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:22:15,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:22:15,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:22:15,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:22:15,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:22:15,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:22:15,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:22:15,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:22:15,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:22:15,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:22:15,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:22:15,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:22:15,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:22:15,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:22:15,148 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 [2020-10-20 06:22:15,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:22:15,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:22:15,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:22:15,417 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:22:15,417 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:22:15,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NonTermination4.c [2020-10-20 06:22:15,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61462f92/5e7732715feb46dea2bbe05f229848a7/FLAG3587dfe1b [2020-10-20 06:22:15,941 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:22:15,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NonTermination4.c [2020-10-20 06:22:15,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61462f92/5e7732715feb46dea2bbe05f229848a7/FLAG3587dfe1b [2020-10-20 06:22:16,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61462f92/5e7732715feb46dea2bbe05f229848a7 [2020-10-20 06:22:16,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:22:16,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:22:16,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:16,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:22:16,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:22:16,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:16" (1/1) ... [2020-10-20 06:22:16,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d90dd87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16, skipping insertion in model container [2020-10-20 06:22:16,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:16" (1/1) ... [2020-10-20 06:22:16,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:22:16,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:22:16,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:16,630 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:22:16,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:16,661 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:22:16,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16 WrapperNode [2020-10-20 06:22:16,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:16,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:16,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:22:16,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:22:16,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16" (1/1) ... [2020-10-20 06:22:16,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16" (1/1) ... [2020-10-20 06:22:16,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:16,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:22:16,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:22:16,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:22:16,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16" (1/1) ... [2020-10-20 06:22:16,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16" (1/1) ... [2020-10-20 06:22:16,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16" (1/1) ... [2020-10-20 06:22:16,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16" (1/1) ... [2020-10-20 06:22:16,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16" (1/1) ... [2020-10-20 06:22:16,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16" (1/1) ... [2020-10-20 06:22:16,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16" (1/1) ... [2020-10-20 06:22:16,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:22:16,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:22:16,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:22:16,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:22:16,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16" (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 [2020-10-20 06:22:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:22:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:22:16,956 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:22:16,956 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:22:16,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:16 BoogieIcfgContainer [2020-10-20 06:22:16,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:22:16,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:22:16,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:22:16,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:22:16,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:22:16" (1/3) ... [2020-10-20 06:22:16,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6402cac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:16, skipping insertion in model container [2020-10-20 06:22:16,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:16" (2/3) ... [2020-10-20 06:22:16,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6402cac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:16, skipping insertion in model container [2020-10-20 06:22:16,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:16" (3/3) ... [2020-10-20 06:22:16,967 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2020-10-20 06:22:16,979 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:22:16,986 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:22:17,001 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:22:17,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:22:17,023 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:22:17,023 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:22:17,023 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:22:17,023 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:22:17,024 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:22:17,024 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:22:17,024 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:22:17,038 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-20 06:22:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-20 06:22:17,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:17,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-20 06:22:17,044 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:17,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:17,049 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-20 06:22:17,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:17,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522167496] [2020-10-20 06:22:17,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:17,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522167496] [2020-10-20 06:22:17,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:17,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 06:22:17,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123777961] [2020-10-20 06:22:17,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:17,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:17,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:17,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:17,244 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-10-20 06:22:17,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:17,299 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-10-20 06:22:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:17,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-20 06:22:17,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:17,317 INFO L225 Difference]: With dead ends: 22 [2020-10-20 06:22:17,317 INFO L226 Difference]: Without dead ends: 13 [2020-10-20 06:22:17,321 INFO L677 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 [2020-10-20 06:22:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-20 06:22:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-10-20 06:22:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 06:22:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-20 06:22:17,366 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2020-10-20 06:22:17,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:17,366 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-20 06:22:17,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:17,367 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-20 06:22:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 06:22:17,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:17,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 06:22:17,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:22:17,369 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:17,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:17,370 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-10-20 06:22:17,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:17,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413440348] [2020-10-20 06:22:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:17,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413440348] [2020-10-20 06:22:17,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:17,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 06:22:17,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295181030] [2020-10-20 06:22:17,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:17,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:17,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:17,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:17,397 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2020-10-20 06:22:17,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:17,411 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-10-20 06:22:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:17,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-20 06:22:17,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:17,413 INFO L225 Difference]: With dead ends: 12 [2020-10-20 06:22:17,413 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 06:22:17,414 INFO L677 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 [2020-10-20 06:22:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 06:22:17,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 06:22:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 06:22:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-20 06:22:17,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2020-10-20 06:22:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:17,420 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-20 06:22:17,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:17,421 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-20 06:22:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:22:17,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:17,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:22:17,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:22:17,422 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:17,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:17,423 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-10-20 06:22:17,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:17,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50228563] [2020-10-20 06:22:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:17,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50228563] [2020-10-20 06:22:17,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:17,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 06:22:17,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261491437] [2020-10-20 06:22:17,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:17,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:17,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:17,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:17,460 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2020-10-20 06:22:17,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:17,480 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-10-20 06:22:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:17,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 06:22:17,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:17,482 INFO L225 Difference]: With dead ends: 15 [2020-10-20 06:22:17,482 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 06:22:17,483 INFO L677 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 [2020-10-20 06:22:17,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 06:22:17,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-20 06:22:17,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 06:22:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-20 06:22:17,488 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2020-10-20 06:22:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:17,488 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-20 06:22:17,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:17,489 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-20 06:22:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:22:17,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:17,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:22:17,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:22:17,490 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:17,491 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-10-20 06:22:17,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:17,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362690951] [2020-10-20 06:22:17,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:17,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362690951] [2020-10-20 06:22:17,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:17,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 06:22:17,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246024360] [2020-10-20 06:22:17,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:17,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:17,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:17,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:17,517 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-10-20 06:22:17,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:17,552 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-10-20 06:22:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:17,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 06:22:17,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:17,553 INFO L225 Difference]: With dead ends: 13 [2020-10-20 06:22:17,553 INFO L226 Difference]: Without dead ends: 12 [2020-10-20 06:22:17,554 INFO L677 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 [2020-10-20 06:22:17,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-20 06:22:17,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-20 06:22:17,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 06:22:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-20 06:22:17,558 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2020-10-20 06:22:17,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:17,558 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-20 06:22:17,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:17,559 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-20 06:22:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:22:17,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:17,559 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:17,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:22:17,560 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:17,560 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2020-10-20 06:22:17,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:17,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910342156] [2020-10-20 06:22:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:17,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910342156] [2020-10-20 06:22:17,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657436247] [2020-10-20 06:22:17,629 INFO L95 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 [2020-10-20 06:22:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:17,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:22:17,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:17,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:17,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-10-20 06:22:17,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660703590] [2020-10-20 06:22:17,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:22:17,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:17,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:22:17,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:22:17,725 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-10-20 06:22:17,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:17,754 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-20 06:22:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:22:17,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 06:22:17,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:17,755 INFO L225 Difference]: With dead ends: 17 [2020-10-20 06:22:17,755 INFO L226 Difference]: Without dead ends: 16 [2020-10-20 06:22:17,756 INFO L677 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 [2020-10-20 06:22:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-20 06:22:17,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-20 06:22:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 06:22:17,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-20 06:22:17,761 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-10-20 06:22:17,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:17,761 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-20 06:22:17,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:22:17,762 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-20 06:22:17,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:22:17,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:17,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-10-20 06:22:17,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:17,964 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:17,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:17,965 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2020-10-20 06:22:17,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:17,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855783859] [2020-10-20 06:22:17,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:18,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855783859] [2020-10-20 06:22:18,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913077515] [2020-10-20 06:22:18,012 INFO L95 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 [2020-10-20 06:22:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:18,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:22:18,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:18,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:18,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-10-20 06:22:18,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119100000] [2020-10-20 06:22:18,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:22:18,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:18,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:22:18,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:22:18,084 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-10-20 06:22:18,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:18,102 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-20 06:22:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:22:18,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 06:22:18,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:18,104 INFO L225 Difference]: With dead ends: 19 [2020-10-20 06:22:18,104 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 06:22:18,104 INFO L677 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 [2020-10-20 06:22:18,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 06:22:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-20 06:22:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 06:22:18,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-20 06:22:18,109 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2020-10-20 06:22:18,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:18,110 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-20 06:22:18,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:22:18,110 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-20 06:22:18,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 06:22:18,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:18,111 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2020-10-20 06:22:18,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:18,313 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:18,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:18,314 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2020-10-20 06:22:18,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:18,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366639767] [2020-10-20 06:22:18,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:18,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366639767] [2020-10-20 06:22:18,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810644870] [2020-10-20 06:22:18,364 INFO L93 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 [2020-10-20 06:22:18,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:22:18,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:18,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:22:18,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:18,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:18,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-20 06:22:18,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506703325] [2020-10-20 06:22:18,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:22:18,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:18,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:22:18,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:22:18,428 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-10-20 06:22:18,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:18,455 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-20 06:22:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:22:18,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 06:22:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:18,456 INFO L225 Difference]: With dead ends: 22 [2020-10-20 06:22:18,456 INFO L226 Difference]: Without dead ends: 21 [2020-10-20 06:22:18,457 INFO L677 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 [2020-10-20 06:22:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-20 06:22:18,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-10-20 06:22:18,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 06:22:18,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-20 06:22:18,462 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2020-10-20 06:22:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:18,462 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-20 06:22:18,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:22:18,462 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-20 06:22:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:22:18,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:18,463 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2020-10-20 06:22:18,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:18,674 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:18,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:18,675 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2020-10-20 06:22:18,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:18,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798276794] [2020-10-20 06:22:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:18,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798276794] [2020-10-20 06:22:18,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404779513] [2020-10-20 06:22:18,718 INFO L93 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 [2020-10-20 06:22:18,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:22:18,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:18,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:22:18,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:18,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:18,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-20 06:22:18,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595673998] [2020-10-20 06:22:18,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:22:18,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:18,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:22:18,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:22:18,789 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2020-10-20 06:22:18,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:18,812 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-20 06:22:18,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:22:18,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-20 06:22:18,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:18,814 INFO L225 Difference]: With dead ends: 24 [2020-10-20 06:22:18,814 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 06:22:18,815 INFO L677 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 [2020-10-20 06:22:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 06:22:18,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-20 06:22:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 06:22:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-20 06:22:18,820 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2020-10-20 06:22:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:18,821 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-20 06:22:18,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:22:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-20 06:22:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:22:18,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:18,822 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2020-10-20 06:22:19,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:19,033 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:19,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:19,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2020-10-20 06:22:19,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:19,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172265360] [2020-10-20 06:22:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:19,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172265360] [2020-10-20 06:22:19,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669816689] [2020-10-20 06:22:19,085 INFO L93 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:19,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-20 06:22:19,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:19,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:22:19,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:19,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:19,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-20 06:22:19,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14034339] [2020-10-20 06:22:19,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:22:19,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:19,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:22:19,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:19,166 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-10-20 06:22:19,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:19,202 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-10-20 06:22:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:22:19,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-20 06:22:19,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:19,203 INFO L225 Difference]: With dead ends: 27 [2020-10-20 06:22:19,203 INFO L226 Difference]: Without dead ends: 26 [2020-10-20 06:22:19,204 INFO L677 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 [2020-10-20 06:22:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-20 06:22:19,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-20 06:22:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 06:22:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-20 06:22:19,209 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2020-10-20 06:22:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:19,209 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-20 06:22:19,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:22:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-20 06:22:19,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:22:19,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:19,210 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2020-10-20 06:22:19,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:19,421 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:19,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:19,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2020-10-20 06:22:19,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:19,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204509937] [2020-10-20 06:22:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:19,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204509937] [2020-10-20 06:22:19,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005356564] [2020-10-20 06:22:19,490 INFO L93 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 [2020-10-20 06:22:19,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-20 06:22:19,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:19,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:22:19,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:19,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:19,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-20 06:22:19,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557474073] [2020-10-20 06:22:19,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:22:19,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:19,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:22:19,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:19,557 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2020-10-20 06:22:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:19,583 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-20 06:22:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:22:19,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-20 06:22:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:19,585 INFO L225 Difference]: With dead ends: 29 [2020-10-20 06:22:19,585 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 06:22:19,585 INFO L677 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 [2020-10-20 06:22:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 06:22:19,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-20 06:22:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:22:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-20 06:22:19,589 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2020-10-20 06:22:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:19,590 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-20 06:22:19,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:22:19,590 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-20 06:22:19,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 06:22:19,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:19,591 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2020-10-20 06:22:19,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:19,801 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:19,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:19,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2020-10-20 06:22:19,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:19,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820377379] [2020-10-20 06:22:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:19,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820377379] [2020-10-20 06:22:19,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225254525] [2020-10-20 06:22:19,854 INFO L93 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) [2020-10-20 06:22:19,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:22:19,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:19,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:22:19,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:19,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:19,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-20 06:22:19,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214846019] [2020-10-20 06:22:19,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:22:19,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:19,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:22:19,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:22:19,948 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2020-10-20 06:22:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:19,978 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-10-20 06:22:19,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:22:19,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-20 06:22:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:19,979 INFO L225 Difference]: With dead ends: 32 [2020-10-20 06:22:19,979 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 06:22:19,980 INFO L677 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 [2020-10-20 06:22:19,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 06:22:19,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-20 06:22:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 06:22:19,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-10-20 06:22:19,984 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2020-10-20 06:22:19,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:19,985 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-10-20 06:22:19,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:22:19,985 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-10-20 06:22:19,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:22:19,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:19,986 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-10-20 06:22:20,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:20,198 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:20,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:20,199 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2020-10-20 06:22:20,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:20,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80541797] [2020-10-20 06:22:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:20,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80541797] [2020-10-20 06:22:20,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109330492] [2020-10-20 06:22:20,250 INFO L93 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) [2020-10-20 06:22:20,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:22:20,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:20,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:20,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:20,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:20,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-20 06:22:20,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653586307] [2020-10-20 06:22:20,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:22:20,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:20,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:22:20,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:22:20,340 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2020-10-20 06:22:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:20,368 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-10-20 06:22:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:22:20,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-20 06:22:20,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:20,369 INFO L225 Difference]: With dead ends: 34 [2020-10-20 06:22:20,369 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 06:22:20,370 INFO L677 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 [2020-10-20 06:22:20,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 06:22:20,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-20 06:22:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 06:22:20,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-10-20 06:22:20,374 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2020-10-20 06:22:20,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:20,374 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-10-20 06:22:20,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:22:20,374 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-10-20 06:22:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 06:22:20,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:20,375 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2020-10-20 06:22:20,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 06:22:20,586 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:20,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2020-10-20 06:22:20,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:20,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420843029] [2020-10-20 06:22:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:20,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420843029] [2020-10-20 06:22:20,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355448252] [2020-10-20 06:22:20,686 INFO L93 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 [2020-10-20 06:22:20,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 06:22:20,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:20,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:22:20,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:20,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:20,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 06:22:20,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025494278] [2020-10-20 06:22:20,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:22:20,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:20,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:22:20,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:22:20,821 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2020-10-20 06:22:20,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:20,854 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-10-20 06:22:20,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:22:20,855 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-20 06:22:20,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:20,855 INFO L225 Difference]: With dead ends: 37 [2020-10-20 06:22:20,855 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 06:22:20,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:22:20,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 06:22:20,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-20 06:22:20,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 06:22:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-10-20 06:22:20,861 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2020-10-20 06:22:20,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:20,861 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-10-20 06:22:20,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:22:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-10-20 06:22:20,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:22:20,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:20,862 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2020-10-20 06:22:21,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:21,072 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:21,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:21,073 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2020-10-20 06:22:21,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:21,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092698363] [2020-10-20 06:22:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:21,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092698363] [2020-10-20 06:22:21,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303752570] [2020-10-20 06:22:21,150 INFO L93 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 [2020-10-20 06:22:21,181 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 06:22:21,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:21,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:22:21,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:21,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:21,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 06:22:21,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475903067] [2020-10-20 06:22:21,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:22:21,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:21,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:22:21,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:22:21,242 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2020-10-20 06:22:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:21,267 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-20 06:22:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:22:21,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-20 06:22:21,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:21,268 INFO L225 Difference]: With dead ends: 39 [2020-10-20 06:22:21,268 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 06:22:21,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:22:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 06:22:21,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-20 06:22:21,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 06:22:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-10-20 06:22:21,273 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2020-10-20 06:22:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:21,274 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-10-20 06:22:21,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:22:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-10-20 06:22:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 06:22:21,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:21,275 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2020-10-20 06:22:21,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:21,486 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:21,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:21,487 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2020-10-20 06:22:21,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:21,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645919106] [2020-10-20 06:22:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:21,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645919106] [2020-10-20 06:22:21,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024550193] [2020-10-20 06:22:21,569 INFO L93 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 [2020-10-20 06:22:21,600 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-20 06:22:21,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:21,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:22:21,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:21,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:21,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-20 06:22:21,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546147647] [2020-10-20 06:22:21,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:22:21,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:21,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:22:21,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:22:21,680 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2020-10-20 06:22:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:21,721 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-10-20 06:22:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:22:21,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-20 06:22:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:21,723 INFO L225 Difference]: With dead ends: 42 [2020-10-20 06:22:21,723 INFO L226 Difference]: Without dead ends: 41 [2020-10-20 06:22:21,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:22:21,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-20 06:22:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-20 06:22:21,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 06:22:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-10-20 06:22:21,729 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2020-10-20 06:22:21,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:21,729 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-10-20 06:22:21,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:22:21,730 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-10-20 06:22:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-20 06:22:21,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:21,731 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2020-10-20 06:22:21,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 06:22:21,943 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:21,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:21,944 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2020-10-20 06:22:21,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:21,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335137586] [2020-10-20 06:22:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:22,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335137586] [2020-10-20 06:22:22,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079855158] [2020-10-20 06:22:22,006 INFO L93 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 [2020-10-20 06:22:22,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-20 06:22:22,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:22,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:22:22,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:22,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:22,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-20 06:22:22,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372878202] [2020-10-20 06:22:22,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:22:22,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:22,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:22:22,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:22:22,120 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2020-10-20 06:22:22,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:22,162 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-10-20 06:22:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:22:22,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-20 06:22:22,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:22,163 INFO L225 Difference]: With dead ends: 44 [2020-10-20 06:22:22,163 INFO L226 Difference]: Without dead ends: 43 [2020-10-20 06:22:22,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:22:22,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-20 06:22:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-20 06:22:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-20 06:22:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-10-20 06:22:22,173 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2020-10-20 06:22:22,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:22,174 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-10-20 06:22:22,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:22:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-10-20 06:22:22,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-20 06:22:22,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:22,175 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2020-10-20 06:22:22,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 06:22:22,375 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:22,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:22,376 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2020-10-20 06:22:22,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:22,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855989807] [2020-10-20 06:22:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:22,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855989807] [2020-10-20 06:22:22,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666893551] [2020-10-20 06:22:22,466 INFO L93 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 [2020-10-20 06:22:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:22,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:22:22,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:22,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:22,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-20 06:22:22,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695298997] [2020-10-20 06:22:22,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:22:22,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:22,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:22:22,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:22:22,599 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2020-10-20 06:22:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:22,667 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-10-20 06:22:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:22:22,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-20 06:22:22,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:22,668 INFO L225 Difference]: With dead ends: 47 [2020-10-20 06:22:22,668 INFO L226 Difference]: Without dead ends: 46 [2020-10-20 06:22:22,668 INFO L677 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 [2020-10-20 06:22:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-20 06:22:22,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-20 06:22:22,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 06:22:22,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-10-20 06:22:22,673 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2020-10-20 06:22:22,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:22,673 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-10-20 06:22:22,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:22:22,673 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-10-20 06:22:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-20 06:22:22,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:22,674 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2020-10-20 06:22:22,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 06:22:22,877 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:22,877 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2020-10-20 06:22:22,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:22,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714350197] [2020-10-20 06:22:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:22,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714350197] [2020-10-20 06:22:22,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438764082] [2020-10-20 06:22:22,948 INFO L93 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 [2020-10-20 06:22:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:22,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:22:22,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:23,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:23,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-20 06:22:23,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884683780] [2020-10-20 06:22:23,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:22:23,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:23,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:22:23,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:22:23,066 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2020-10-20 06:22:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:23,111 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-10-20 06:22:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:22:23,111 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-20 06:22:23,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:23,112 INFO L225 Difference]: With dead ends: 49 [2020-10-20 06:22:23,112 INFO L226 Difference]: Without dead ends: 48 [2020-10-20 06:22:23,113 INFO L677 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 [2020-10-20 06:22:23,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-20 06:22:23,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-20 06:22:23,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 06:22:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-10-20 06:22:23,118 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2020-10-20 06:22:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:23,118 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-10-20 06:22:23,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:22:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-10-20 06:22:23,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-20 06:22:23,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:23,119 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2020-10-20 06:22:23,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:23,331 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:23,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2020-10-20 06:22:23,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:23,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428163748] [2020-10-20 06:22:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:23,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428163748] [2020-10-20 06:22:23,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955507108] [2020-10-20 06:22:23,414 INFO L93 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 [2020-10-20 06:22:23,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:22:23,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:23,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:22:23,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:23,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:23,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-20 06:22:23,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144069802] [2020-10-20 06:22:23,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:22:23,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:23,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:22:23,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:22:23,559 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2020-10-20 06:22:23,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:23,616 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-10-20 06:22:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:22:23,616 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-20 06:22:23,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:23,617 INFO L225 Difference]: With dead ends: 52 [2020-10-20 06:22:23,618 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 06:22:23,618 INFO L677 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 [2020-10-20 06:22:23,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 06:22:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-20 06:22:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 06:22:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-10-20 06:22:23,623 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2020-10-20 06:22:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:23,623 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-10-20 06:22:23,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:22:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-10-20 06:22:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-20 06:22:23,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:23,624 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2020-10-20 06:22:23,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:23,831 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:23,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:23,831 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2020-10-20 06:22:23,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:23,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606061294] [2020-10-20 06:22:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:23,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606061294] [2020-10-20 06:22:23,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273403609] [2020-10-20 06:22:23,925 INFO L93 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 [2020-10-20 06:22:23,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:22:23,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:23,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:22:23,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:24,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:24,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-20 06:22:24,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082313421] [2020-10-20 06:22:24,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:22:24,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:24,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:22:24,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:22:24,079 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2020-10-20 06:22:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:24,121 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-10-20 06:22:24,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:22:24,121 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-20 06:22:24,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:24,122 INFO L225 Difference]: With dead ends: 54 [2020-10-20 06:22:24,122 INFO L226 Difference]: Without dead ends: 53 [2020-10-20 06:22:24,122 INFO L677 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 [2020-10-20 06:22:24,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-20 06:22:24,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-20 06:22:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 06:22:24,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-10-20 06:22:24,127 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2020-10-20 06:22:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:24,128 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-10-20 06:22:24,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:22:24,128 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-10-20 06:22:24,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-20 06:22:24,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:24,129 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2020-10-20 06:22:24,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:24,330 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:24,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:24,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2020-10-20 06:22:24,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:24,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266200738] [2020-10-20 06:22:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:24,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266200738] [2020-10-20 06:22:24,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858022628] [2020-10-20 06:22:24,437 INFO L93 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 [2020-10-20 06:22:24,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-20 06:22:24,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:24,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:22:24,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:24,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:24,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-20 06:22:24,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230775486] [2020-10-20 06:22:24,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:22:24,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:24,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:22:24,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:22:24,632 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2020-10-20 06:22:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:24,704 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-10-20 06:22:24,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:22:24,705 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-20 06:22:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:24,705 INFO L225 Difference]: With dead ends: 57 [2020-10-20 06:22:24,705 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 06:22:24,706 INFO L677 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 [2020-10-20 06:22:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 06:22:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-20 06:22:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 06:22:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-10-20 06:22:24,711 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2020-10-20 06:22:24,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:24,711 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-10-20 06:22:24,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:22:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-10-20 06:22:24,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-20 06:22:24,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:24,713 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2020-10-20 06:22:24,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-20 06:22:24,923 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:24,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:24,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2020-10-20 06:22:24,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:24,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148934542] [2020-10-20 06:22:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:25,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148934542] [2020-10-20 06:22:25,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248289552] [2020-10-20 06:22:25,028 INFO L93 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 [2020-10-20 06:22:25,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-20 06:22:25,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:25,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:22:25,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:25,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:25,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-20 06:22:25,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995758233] [2020-10-20 06:22:25,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:22:25,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:25,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:22:25,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:22:25,166 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2020-10-20 06:22:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:25,207 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-10-20 06:22:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:22:25,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-20 06:22:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:25,208 INFO L225 Difference]: With dead ends: 59 [2020-10-20 06:22:25,208 INFO L226 Difference]: Without dead ends: 58 [2020-10-20 06:22:25,208 INFO L677 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 [2020-10-20 06:22:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-20 06:22:25,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-20 06:22:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 06:22:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-10-20 06:22:25,213 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2020-10-20 06:22:25,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:25,213 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-10-20 06:22:25,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:22:25,214 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-10-20 06:22:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-20 06:22:25,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:25,214 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2020-10-20 06:22:25,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-20 06:22:25,424 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:25,424 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2020-10-20 06:22:25,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:25,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360062740] [2020-10-20 06:22:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:25,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360062740] [2020-10-20 06:22:25,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776892658] [2020-10-20 06:22:25,531 INFO L93 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 [2020-10-20 06:22:25,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:22:25,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:25,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:22:25,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:25,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:25,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-20 06:22:25,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246220191] [2020-10-20 06:22:25,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:22:25,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:25,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:22:25,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:22:25,692 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2020-10-20 06:22:25,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:25,747 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-10-20 06:22:25,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:22:25,747 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-20 06:22:25,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:25,748 INFO L225 Difference]: With dead ends: 62 [2020-10-20 06:22:25,748 INFO L226 Difference]: Without dead ends: 61 [2020-10-20 06:22:25,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:22:25,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-20 06:22:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-20 06:22:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-20 06:22:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2020-10-20 06:22:25,757 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2020-10-20 06:22:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:25,757 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2020-10-20 06:22:25,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:22:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2020-10-20 06:22:25,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-20 06:22:25,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:25,759 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2020-10-20 06:22:25,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-20 06:22:25,967 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:25,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2020-10-20 06:22:25,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:25,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193215433] [2020-10-20 06:22:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:26,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193215433] [2020-10-20 06:22:26,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100188300] [2020-10-20 06:22:26,071 INFO L93 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 [2020-10-20 06:22:26,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:22:26,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:26,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:22:26,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:26,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:26,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-20 06:22:26,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494537833] [2020-10-20 06:22:26,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:22:26,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:26,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:22:26,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:22:26,227 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2020-10-20 06:22:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:26,275 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-10-20 06:22:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:22:26,276 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-20 06:22:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:26,277 INFO L225 Difference]: With dead ends: 64 [2020-10-20 06:22:26,277 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 06:22:26,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:22:26,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 06:22:26,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-20 06:22:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-20 06:22:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-10-20 06:22:26,281 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2020-10-20 06:22:26,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:26,281 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-10-20 06:22:26,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:22:26,281 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-10-20 06:22:26,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-20 06:22:26,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:26,282 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2020-10-20 06:22:26,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-20 06:22:26,491 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:26,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:26,491 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2020-10-20 06:22:26,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:26,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074424388] [2020-10-20 06:22:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:26,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074424388] [2020-10-20 06:22:26,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376917548] [2020-10-20 06:22:26,618 INFO L93 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 [2020-10-20 06:22:26,648 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-20 06:22:26,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:26,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 06:22:26,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:26,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:26,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-20 06:22:26,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301474897] [2020-10-20 06:22:26,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 06:22:26,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:26,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 06:22:26,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:22:26,796 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2020-10-20 06:22:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:26,858 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-10-20 06:22:26,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:22:26,859 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-20 06:22:26,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:26,860 INFO L225 Difference]: With dead ends: 67 [2020-10-20 06:22:26,860 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 06:22:26,860 INFO L677 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 [2020-10-20 06:22:26,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 06:22:26,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-20 06:22:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-20 06:22:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2020-10-20 06:22:26,864 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2020-10-20 06:22:26,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:26,864 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2020-10-20 06:22:26,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 06:22:26,864 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2020-10-20 06:22:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-20 06:22:26,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:26,865 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2020-10-20 06:22:27,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-20 06:22:27,074 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:27,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:27,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2020-10-20 06:22:27,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:27,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766164643] [2020-10-20 06:22:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:27,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766164643] [2020-10-20 06:22:27,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612971272] [2020-10-20 06:22:27,191 INFO L93 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 [2020-10-20 06:22:27,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-20 06:22:27,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:27,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 06:22:27,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:27,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:27,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-20 06:22:27,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683846913] [2020-10-20 06:22:27,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 06:22:27,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:27,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 06:22:27,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:22:27,414 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2020-10-20 06:22:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:27,454 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2020-10-20 06:22:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:22:27,455 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-20 06:22:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:27,456 INFO L225 Difference]: With dead ends: 69 [2020-10-20 06:22:27,456 INFO L226 Difference]: Without dead ends: 68 [2020-10-20 06:22:27,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:22:27,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-20 06:22:27,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-20 06:22:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-20 06:22:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-10-20 06:22:27,460 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2020-10-20 06:22:27,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:27,460 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-10-20 06:22:27,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 06:22:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-10-20 06:22:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-20 06:22:27,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:27,461 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2020-10-20 06:22:27,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:27,671 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2020-10-20 06:22:27,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:27,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752164655] [2020-10-20 06:22:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:27,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752164655] [2020-10-20 06:22:27,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035859095] [2020-10-20 06:22:27,803 INFO L93 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 [2020-10-20 06:22:27,840 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-20 06:22:27,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:27,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 06:22:27,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:28,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:28,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-20 06:22:28,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942662692] [2020-10-20 06:22:28,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 06:22:28,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:28,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 06:22:28,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:22:28,004 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2020-10-20 06:22:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:28,074 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-10-20 06:22:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 06:22:28,075 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2020-10-20 06:22:28,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:28,076 INFO L225 Difference]: With dead ends: 72 [2020-10-20 06:22:28,076 INFO L226 Difference]: Without dead ends: 71 [2020-10-20 06:22:28,076 INFO L677 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 [2020-10-20 06:22:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-20 06:22:28,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-20 06:22:28,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-20 06:22:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2020-10-20 06:22:28,082 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2020-10-20 06:22:28,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:28,082 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2020-10-20 06:22:28,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 06:22:28,082 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2020-10-20 06:22:28,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-20 06:22:28,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:28,083 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2020-10-20 06:22:28,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-20 06:22:28,292 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:28,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:28,292 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2020-10-20 06:22:28,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:28,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393689981] [2020-10-20 06:22:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:28,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393689981] [2020-10-20 06:22:28,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272752596] [2020-10-20 06:22:28,422 INFO L93 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 [2020-10-20 06:22:28,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-20 06:22:28,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:28,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 06:22:28,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:28,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:28,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-20 06:22:28,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668776408] [2020-10-20 06:22:28,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 06:22:28,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:28,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 06:22:28,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:22:28,627 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2020-10-20 06:22:28,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:28,692 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2020-10-20 06:22:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 06:22:28,693 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-20 06:22:28,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:28,694 INFO L225 Difference]: With dead ends: 74 [2020-10-20 06:22:28,694 INFO L226 Difference]: Without dead ends: 73 [2020-10-20 06:22:28,694 INFO L677 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 [2020-10-20 06:22:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-20 06:22:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-20 06:22:28,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-20 06:22:28,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2020-10-20 06:22:28,697 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2020-10-20 06:22:28,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:28,697 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2020-10-20 06:22:28,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 06:22:28,698 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2020-10-20 06:22:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-20 06:22:28,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:28,698 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2020-10-20 06:22:28,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:28,909 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:28,909 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2020-10-20 06:22:28,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:28,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062769500] [2020-10-20 06:22:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:29,078 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:29,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062769500] [2020-10-20 06:22:29,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170126217] [2020-10-20 06:22:29,079 INFO L93 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 [2020-10-20 06:22:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:29,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 06:22:29,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:29,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:29,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-20 06:22:29,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089336111] [2020-10-20 06:22:29,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 06:22:29,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:29,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 06:22:29,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:22:29,377 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2020-10-20 06:22:29,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:29,472 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2020-10-20 06:22:29,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 06:22:29,472 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-20 06:22:29,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:29,474 INFO L225 Difference]: With dead ends: 77 [2020-10-20 06:22:29,474 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 06:22:29,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:22:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 06:22:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-20 06:22:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-20 06:22:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2020-10-20 06:22:29,477 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2020-10-20 06:22:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:29,478 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2020-10-20 06:22:29,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 06:22:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2020-10-20 06:22:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-20 06:22:29,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:29,479 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2020-10-20 06:22:29,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-20 06:22:29,689 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:29,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:29,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2020-10-20 06:22:29,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:29,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702582147] [2020-10-20 06:22:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:29,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702582147] [2020-10-20 06:22:29,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254803423] [2020-10-20 06:22:29,900 INFO L93 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 [2020-10-20 06:22:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:29,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 06:22:29,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:30,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:30,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-20 06:22:30,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025057441] [2020-10-20 06:22:30,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 06:22:30,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:30,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 06:22:30,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:22:30,178 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2020-10-20 06:22:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:30,225 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-10-20 06:22:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 06:22:30,226 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-20 06:22:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:30,227 INFO L225 Difference]: With dead ends: 79 [2020-10-20 06:22:30,227 INFO L226 Difference]: Without dead ends: 78 [2020-10-20 06:22:30,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:22:30,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-20 06:22:30,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-20 06:22:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-20 06:22:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-10-20 06:22:30,230 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2020-10-20 06:22:30,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:30,231 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-10-20 06:22:30,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 06:22:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-10-20 06:22:30,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-20 06:22:30,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:30,232 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2020-10-20 06:22:30,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:30,441 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:30,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:30,442 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2020-10-20 06:22:30,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:30,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942149593] [2020-10-20 06:22:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:30,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942149593] [2020-10-20 06:22:30,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709777649] [2020-10-20 06:22:30,643 INFO L93 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 [2020-10-20 06:22:30,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:22:30,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:30,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:22:30,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:30,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:30,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-20 06:22:30,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308968973] [2020-10-20 06:22:30,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-20 06:22:30,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:30,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-20 06:22:30,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:22:30,867 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2020-10-20 06:22:30,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:30,934 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2020-10-20 06:22:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-20 06:22:30,934 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-20 06:22:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:30,935 INFO L225 Difference]: With dead ends: 82 [2020-10-20 06:22:30,935 INFO L226 Difference]: Without dead ends: 81 [2020-10-20 06:22:30,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:22:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-20 06:22:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-20 06:22:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 06:22:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2020-10-20 06:22:30,939 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2020-10-20 06:22:30,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:30,940 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2020-10-20 06:22:30,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-20 06:22:30,940 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2020-10-20 06:22:30,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-20 06:22:30,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:30,941 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2020-10-20 06:22:31,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-20 06:22:31,151 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:31,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:31,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2020-10-20 06:22:31,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:31,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896667313] [2020-10-20 06:22:31,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:31,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896667313] [2020-10-20 06:22:31,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669869997] [2020-10-20 06:22:31,321 INFO L93 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 [2020-10-20 06:22:31,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:22:31,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:31,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:22:31,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:31,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:31,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-20 06:22:31,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995968985] [2020-10-20 06:22:31,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-20 06:22:31,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:31,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-20 06:22:31,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:22:31,553 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2020-10-20 06:22:31,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:31,608 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2020-10-20 06:22:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-20 06:22:31,608 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2020-10-20 06:22:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:31,609 INFO L225 Difference]: With dead ends: 84 [2020-10-20 06:22:31,609 INFO L226 Difference]: Without dead ends: 83 [2020-10-20 06:22:31,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:22:31,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-20 06:22:31,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-10-20 06:22:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-20 06:22:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2020-10-20 06:22:31,613 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2020-10-20 06:22:31,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:31,613 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2020-10-20 06:22:31,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-20 06:22:31,614 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2020-10-20 06:22:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-20 06:22:31,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:31,615 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2020-10-20 06:22:31,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:31,824 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:31,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:31,824 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2020-10-20 06:22:31,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:31,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450577490] [2020-10-20 06:22:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:32,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450577490] [2020-10-20 06:22:32,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689962267] [2020-10-20 06:22:32,043 INFO L93 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 [2020-10-20 06:22:32,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-10-20 06:22:32,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:32,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 06:22:32,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:32,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:32,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-20 06:22:32,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084568248] [2020-10-20 06:22:32,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 06:22:32,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:32,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 06:22:32,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-20 06:22:32,378 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2020-10-20 06:22:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:32,473 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-10-20 06:22:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-20 06:22:32,473 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-10-20 06:22:32,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:32,475 INFO L225 Difference]: With dead ends: 87 [2020-10-20 06:22:32,475 INFO L226 Difference]: Without dead ends: 86 [2020-10-20 06:22:32,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-20 06:22:32,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-20 06:22:32,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-20 06:22:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-20 06:22:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2020-10-20 06:22:32,487 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2020-10-20 06:22:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:32,488 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2020-10-20 06:22:32,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 06:22:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2020-10-20 06:22:32,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-20 06:22:32,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:32,489 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2020-10-20 06:22:32,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-20 06:22:32,702 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:32,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:32,703 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2020-10-20 06:22:32,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:32,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455230059] [2020-10-20 06:22:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:32,902 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:32,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455230059] [2020-10-20 06:22:32,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028977938] [2020-10-20 06:22:32,903 INFO L93 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 [2020-10-20 06:22:32,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-10-20 06:22:32,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:32,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 06:22:32,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:33,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:33,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-20 06:22:33,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997382331] [2020-10-20 06:22:33,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 06:22:33,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:33,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 06:22:33,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-20 06:22:33,167 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2020-10-20 06:22:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:33,229 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2020-10-20 06:22:33,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-20 06:22:33,229 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-20 06:22:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:33,230 INFO L225 Difference]: With dead ends: 89 [2020-10-20 06:22:33,230 INFO L226 Difference]: Without dead ends: 88 [2020-10-20 06:22:33,231 INFO L677 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 [2020-10-20 06:22:33,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-20 06:22:33,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-20 06:22:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-20 06:22:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2020-10-20 06:22:33,234 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2020-10-20 06:22:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:33,234 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2020-10-20 06:22:33,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 06:22:33,234 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2020-10-20 06:22:33,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-20 06:22:33,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:33,235 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2020-10-20 06:22:33,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:33,444 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:33,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:33,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2020-10-20 06:22:33,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:33,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776573445] [2020-10-20 06:22:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:33,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776573445] [2020-10-20 06:22:33,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110213838] [2020-10-20 06:22:33,676 INFO L93 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 [2020-10-20 06:22:33,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:22:33,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:33,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 06:22:33,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:34,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:34,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-20 06:22:34,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182227034] [2020-10-20 06:22:34,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-20 06:22:34,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:34,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-20 06:22:34,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-20 06:22:34,031 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2020-10-20 06:22:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:34,113 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2020-10-20 06:22:34,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-20 06:22:34,113 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2020-10-20 06:22:34,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:34,114 INFO L225 Difference]: With dead ends: 92 [2020-10-20 06:22:34,115 INFO L226 Difference]: Without dead ends: 91 [2020-10-20 06:22:34,115 INFO L677 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 [2020-10-20 06:22:34,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-20 06:22:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-20 06:22:34,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-20 06:22:34,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2020-10-20 06:22:34,119 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2020-10-20 06:22:34,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:34,120 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2020-10-20 06:22:34,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-20 06:22:34,120 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2020-10-20 06:22:34,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-20 06:22:34,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:34,121 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2020-10-20 06:22:34,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-20 06:22:34,331 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:34,332 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2020-10-20 06:22:34,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:34,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899072911] [2020-10-20 06:22:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:34,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899072911] [2020-10-20 06:22:34,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920270738] [2020-10-20 06:22:34,547 INFO L93 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 [2020-10-20 06:22:34,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:22:34,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:34,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 06:22:34,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:34,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:34,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-20 06:22:34,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286263887] [2020-10-20 06:22:34,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-20 06:22:34,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:34,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-20 06:22:34,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-20 06:22:34,834 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2020-10-20 06:22:34,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:34,897 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2020-10-20 06:22:34,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-20 06:22:34,898 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2020-10-20 06:22:34,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:34,899 INFO L225 Difference]: With dead ends: 94 [2020-10-20 06:22:34,899 INFO L226 Difference]: Without dead ends: 93 [2020-10-20 06:22:34,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-20 06:22:34,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-20 06:22:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-20 06:22:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-20 06:22:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2020-10-20 06:22:34,903 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2020-10-20 06:22:34,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:34,904 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2020-10-20 06:22:34,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-20 06:22:34,904 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2020-10-20 06:22:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-20 06:22:34,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:34,906 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2020-10-20 06:22:35,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-20 06:22:35,115 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:35,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2020-10-20 06:22:35,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:35,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338024102] [2020-10-20 06:22:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:35,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338024102] [2020-10-20 06:22:35,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572888910] [2020-10-20 06:22:35,344 INFO L93 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 [2020-10-20 06:22:35,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-10-20 06:22:35,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:35,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-20 06:22:35,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:35,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:35,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-20 06:22:35,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705606] [2020-10-20 06:22:35,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-20 06:22:35,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:35,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-20 06:22:35,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-20 06:22:35,662 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2020-10-20 06:22:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:35,741 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2020-10-20 06:22:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-20 06:22:35,741 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2020-10-20 06:22:35,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:35,742 INFO L225 Difference]: With dead ends: 97 [2020-10-20 06:22:35,743 INFO L226 Difference]: Without dead ends: 96 [2020-10-20 06:22:35,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-20 06:22:35,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-20 06:22:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-20 06:22:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-20 06:22:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-10-20 06:22:35,747 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2020-10-20 06:22:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:35,747 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-10-20 06:22:35,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-20 06:22:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-10-20 06:22:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-20 06:22:35,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:35,749 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2020-10-20 06:22:35,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-20 06:22:35,959 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:35,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:35,959 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2020-10-20 06:22:35,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:35,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092650826] [2020-10-20 06:22:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:36,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092650826] [2020-10-20 06:22:36,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018602620] [2020-10-20 06:22:36,175 INFO L93 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 [2020-10-20 06:22:36,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-10-20 06:22:36,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:36,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-20 06:22:36,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:36,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:36,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-20 06:22:36,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564615519] [2020-10-20 06:22:36,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-20 06:22:36,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:36,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-20 06:22:36,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-20 06:22:36,513 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2020-10-20 06:22:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:36,589 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-10-20 06:22:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-20 06:22:36,589 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2020-10-20 06:22:36,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:36,591 INFO L225 Difference]: With dead ends: 99 [2020-10-20 06:22:36,591 INFO L226 Difference]: Without dead ends: 98 [2020-10-20 06:22:36,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-20 06:22:36,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-20 06:22:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-20 06:22:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-20 06:22:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-10-20 06:22:36,596 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2020-10-20 06:22:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:36,597 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-10-20 06:22:36,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-20 06:22:36,597 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-10-20 06:22:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-20 06:22:36,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:36,598 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2020-10-20 06:22:36,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-20 06:22:36,809 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:36,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:36,810 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2020-10-20 06:22:36,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:36,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264465626] [2020-10-20 06:22:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:37,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264465626] [2020-10-20 06:22:37,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689741508] [2020-10-20 06:22:37,049 INFO L93 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 [2020-10-20 06:22:37,098 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-10-20 06:22:37,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:37,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 06:22:37,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:37,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:37,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-20 06:22:37,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689126663] [2020-10-20 06:22:37,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-20 06:22:37,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:37,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-20 06:22:37,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-20 06:22:37,444 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2020-10-20 06:22:37,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:37,541 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2020-10-20 06:22:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-20 06:22:37,541 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2020-10-20 06:22:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:37,542 INFO L225 Difference]: With dead ends: 102 [2020-10-20 06:22:37,542 INFO L226 Difference]: Without dead ends: 101 [2020-10-20 06:22:37,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-20 06:22:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-20 06:22:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-10-20 06:22:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-20 06:22:37,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2020-10-20 06:22:37,551 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2020-10-20 06:22:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:37,551 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2020-10-20 06:22:37,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-20 06:22:37,552 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2020-10-20 06:22:37,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-20 06:22:37,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:37,553 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2020-10-20 06:22:37,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-20 06:22:37,763 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:37,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:37,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2020-10-20 06:22:37,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:37,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804181264] [2020-10-20 06:22:37,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:38,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804181264] [2020-10-20 06:22:38,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700359160] [2020-10-20 06:22:38,022 INFO L93 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 [2020-10-20 06:22:38,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-10-20 06:22:38,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:38,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 06:22:38,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:38,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:38,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-20 06:22:38,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353974766] [2020-10-20 06:22:38,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-20 06:22:38,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:38,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-20 06:22:38,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-20 06:22:38,379 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2020-10-20 06:22:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:38,454 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2020-10-20 06:22:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-20 06:22:38,458 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2020-10-20 06:22:38,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:38,459 INFO L225 Difference]: With dead ends: 104 [2020-10-20 06:22:38,460 INFO L226 Difference]: Without dead ends: 103 [2020-10-20 06:22:38,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-20 06:22:38,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-20 06:22:38,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-10-20 06:22:38,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-20 06:22:38,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2020-10-20 06:22:38,465 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2020-10-20 06:22:38,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:38,465 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2020-10-20 06:22:38,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-20 06:22:38,465 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2020-10-20 06:22:38,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-20 06:22:38,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:38,466 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2020-10-20 06:22:38,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-20 06:22:38,676 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:38,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:38,676 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2020-10-20 06:22:38,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:38,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937890737] [2020-10-20 06:22:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:38,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937890737] [2020-10-20 06:22:38,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468065025] [2020-10-20 06:22:38,942 INFO L93 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 [2020-10-20 06:22:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:38,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-20 06:22:38,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:39,336 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:39,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:39,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-20 06:22:39,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529890210] [2020-10-20 06:22:39,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-20 06:22:39,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:39,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-20 06:22:39,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:22:39,339 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2020-10-20 06:22:39,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:39,461 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2020-10-20 06:22:39,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-20 06:22:39,462 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2020-10-20 06:22:39,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:39,464 INFO L225 Difference]: With dead ends: 107 [2020-10-20 06:22:39,464 INFO L226 Difference]: Without dead ends: 106 [2020-10-20 06:22:39,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:22:39,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-20 06:22:39,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-20 06:22:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-20 06:22:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2020-10-20 06:22:39,469 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2020-10-20 06:22:39,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:39,469 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2020-10-20 06:22:39,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-20 06:22:39,470 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2020-10-20 06:22:39,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-20 06:22:39,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:39,471 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2020-10-20 06:22:39,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-10-20 06:22:39,683 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:39,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:39,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2020-10-20 06:22:39,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:39,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435927439] [2020-10-20 06:22:39,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:22:39,720 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:22:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:22:39,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:22:39,775 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:22:39,775 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:22:39,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-20 06:22:39,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:22:39 BoogieIcfgContainer [2020-10-20 06:22:39,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:22:39,834 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:22:39,834 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:22:39,834 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:22:39,835 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:16" (3/4) ... [2020-10-20 06:22:39,837 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:22:39,932 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:22:39,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:22:39,935 INFO L168 Benchmark]: Toolchain (without parser) took 23632.12 ms. Allocated memory was 35.1 MB in the beginning and 99.6 MB in the end (delta: 64.5 MB). Free memory was 13.8 MB in the beginning and 53.8 MB in the end (delta: -40.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:39,935 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 33.0 MB. Free memory was 8.1 MB in the beginning and 8.1 MB in the end (delta: 42.2 kB). Peak memory consumption was 42.2 kB. Max. memory is 14.3 GB. [2020-10-20 06:22:39,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.26 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 12.9 MB in the beginning and 26.6 MB in the end (delta: -13.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:39,936 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.66 ms. Allocated memory is still 45.1 MB. Free memory was 26.6 MB in the beginning and 25.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:39,937 INFO L168 Benchmark]: Boogie Preprocessor took 21.95 ms. Allocated memory is still 45.1 MB. Free memory was 25.0 MB in the beginning and 24.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:39,937 INFO L168 Benchmark]: RCFGBuilder took 236.11 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 23.9 MB in the beginning and 25.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:39,938 INFO L168 Benchmark]: TraceAbstraction took 22873.75 ms. Allocated memory was 46.7 MB in the beginning and 99.6 MB in the end (delta: 53.0 MB). Free memory was 24.8 MB in the beginning and 56.6 MB in the end (delta: -31.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:39,938 INFO L168 Benchmark]: Witness Printer took 98.92 ms. Allocated memory is still 99.6 MB. Free memory was 56.6 MB in the beginning and 53.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:39,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 33.0 MB. Free memory was 8.1 MB in the beginning and 8.1 MB in the end (delta: 42.2 kB). Peak memory consumption was 42.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 354.26 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 12.9 MB in the beginning and 26.6 MB in the end (delta: -13.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 36.66 ms. Allocated memory is still 45.1 MB. Free memory was 26.6 MB in the beginning and 25.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.95 ms. Allocated memory is still 45.1 MB. Free memory was 25.0 MB in the beginning and 24.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 236.11 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 23.9 MB in the beginning and 25.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 22873.75 ms. Allocated memory was 46.7 MB in the beginning and 99.6 MB in the end (delta: 53.0 MB). Free memory was 24.8 MB in the beginning and 56.6 MB in the end (delta: -31.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 14.3 GB. * Witness Printer took 98.92 ms. Allocated memory is still 99.6 MB. Free memory was 56.6 MB in the beginning and 53.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 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. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.7s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, 8.0s 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, 10.0s 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...