./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 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 94b61e96441ca10668b436b4ef10dfd9464f0863 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:50:11,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:50:11,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:50:11,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:50:11,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:50:11,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:50:11,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:50:11,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:50:11,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:50:11,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:50:11,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:50:11,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:50:11,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:50:11,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:50:11,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:50:11,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:50:11,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:50:11,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:50:11,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:50:11,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:50:11,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:50:11,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:50:11,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:50:11,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:50:11,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:50:11,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:50:11,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:50:11,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:50:11,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:50:11,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:50:11,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:50:11,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:50:11,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:50:11,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:50:11,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:50:11,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:50:11,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:50:11,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:50:11,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:50:11,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:50:11,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:50:11,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-28 02:50:11,539 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:50:11,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:50:11,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:50:11,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:50:11,546 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:50:11,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:50:11,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:50:11,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:50:11,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:50:11,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 02:50:11,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:50:11,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 02:50:11,548 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-28 02:50:11,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:50:11,548 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:50:11,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 02:50:11,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:50:11,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:50:11,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:50:11,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:50:11,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:50:11,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:50:11,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:50:11,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 02:50:11,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:50:11,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:50:11,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 02:50:11,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2019-11-28 02:50:11,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:50:11,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:50:11,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:50:11,884 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:50:11,885 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:50:11,885 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-28 02:50:11,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11dcc96d0/d3b3f3b4adeb49cb877623188501656e/FLAG8f94b9fd8 [2019-11-28 02:50:12,449 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:50:12,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-11-28 02:50:12,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11dcc96d0/d3b3f3b4adeb49cb877623188501656e/FLAG8f94b9fd8 [2019-11-28 02:50:12,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11dcc96d0/d3b3f3b4adeb49cb877623188501656e [2019-11-28 02:50:12,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:50:12,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:50:12,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:50:12,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:50:12,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:50:12,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:50:12" (1/1) ... [2019-11-28 02:50:12,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762a845e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:12, skipping insertion in model container [2019-11-28 02:50:12,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:50:12" (1/1) ... [2019-11-28 02:50:12,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:50:12,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:50:13,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:50:13,174 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:50:13,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:50:13,198 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:50:13,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13 WrapperNode [2019-11-28 02:50:13,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:50:13,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:50:13,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:50:13,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:50:13,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13" (1/1) ... [2019-11-28 02:50:13,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13" (1/1) ... [2019-11-28 02:50:13,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:50:13,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:50:13,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:50:13,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:50:13,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13" (1/1) ... [2019-11-28 02:50:13,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13" (1/1) ... [2019-11-28 02:50:13,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13" (1/1) ... [2019-11-28 02:50:13,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13" (1/1) ... [2019-11-28 02:50:13,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13" (1/1) ... [2019-11-28 02:50:13,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13" (1/1) ... [2019-11-28 02:50:13,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13" (1/1) ... [2019-11-28 02:50:13,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:50:13,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:50:13,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:50:13,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:50:13,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:50:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:50:13,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:50:13,523 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:50:13,523 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:50:13,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:50:13 BoogieIcfgContainer [2019-11-28 02:50:13,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:50:13,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:50:13,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:50:13,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:50:13,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:50:12" (1/3) ... [2019-11-28 02:50:13,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56415182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:50:13, skipping insertion in model container [2019-11-28 02:50:13,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:13" (2/3) ... [2019-11-28 02:50:13,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56415182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:50:13, skipping insertion in model container [2019-11-28 02:50:13,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:50:13" (3/3) ... [2019-11-28 02:50:13,532 INFO L109 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2019-11-28 02:50:13,540 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:50:13,545 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-28 02:50:13,558 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-28 02:50:13,581 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:50:13,582 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 02:50:13,582 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:50:13,582 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:50:13,582 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:50:13,582 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:50:13,582 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:50:13,583 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:50:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-28 02:50:13,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-28 02:50:13,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:13,601 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-28 02:50:13,602 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:13,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:13,608 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-11-28 02:50:13,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:13,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702576666] [2019-11-28 02:50:13,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:13,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702576666] [2019-11-28 02:50:13,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:50:13,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 02:50:13,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892307475] [2019-11-28 02:50:13,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:50:13,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:13,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:50:13,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:50:13,762 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-28 02:50:13,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:13,855 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-28 02:50:13,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:50:13,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-28 02:50:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:13,868 INFO L225 Difference]: With dead ends: 22 [2019-11-28 02:50:13,868 INFO L226 Difference]: Without dead ends: 13 [2019-11-28 02:50:13,871 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:50:13,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-28 02:50:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-28 02:50:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 02:50:13,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-28 02:50:13,904 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-11-28 02:50:13,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:13,904 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-28 02:50:13,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:50:13,904 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-28 02:50:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-28 02:50:13,908 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:13,908 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-28 02:50:13,908 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:13,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:13,909 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-11-28 02:50:13,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:13,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654211686] [2019-11-28 02:50:13,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:13,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654211686] [2019-11-28 02:50:13,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:50:13,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 02:50:13,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396294284] [2019-11-28 02:50:13,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:50:13,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:13,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:50:13,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:50:13,937 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-11-28 02:50:13,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:13,965 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-28 02:50:13,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:50:13,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-28 02:50:13,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:13,966 INFO L225 Difference]: With dead ends: 12 [2019-11-28 02:50:13,966 INFO L226 Difference]: Without dead ends: 11 [2019-11-28 02:50:13,967 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:50:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-28 02:50:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-28 02:50:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-28 02:50:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-11-28 02:50:13,971 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2019-11-28 02:50:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:13,971 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-11-28 02:50:13,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:50:13,971 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-11-28 02:50:13,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-28 02:50:13,972 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:13,972 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-28 02:50:13,973 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:13,973 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-11-28 02:50:13,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:13,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466336297] [2019-11-28 02:50:13,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:14,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466336297] [2019-11-28 02:50:14,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:50:14,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 02:50:14,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908329680] [2019-11-28 02:50:14,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:50:14,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:14,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:50:14,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:50:14,011 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2019-11-28 02:50:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:14,046 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-11-28 02:50:14,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:50:14,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-28 02:50:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:14,047 INFO L225 Difference]: With dead ends: 15 [2019-11-28 02:50:14,047 INFO L226 Difference]: Without dead ends: 14 [2019-11-28 02:50:14,048 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:50:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-28 02:50:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-28 02:50:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-28 02:50:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-28 02:50:14,052 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2019-11-28 02:50:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:14,053 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-28 02:50:14,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:50:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-28 02:50:14,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-28 02:50:14,053 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:14,054 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-28 02:50:14,054 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:14,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:14,054 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-11-28 02:50:14,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:14,055 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133197608] [2019-11-28 02:50:14,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:14,081 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133197608] [2019-11-28 02:50:14,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:50:14,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-28 02:50:14,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678925505] [2019-11-28 02:50:14,082 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 02:50:14,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:14,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:50:14,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:50:14,083 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-11-28 02:50:14,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:14,101 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-28 02:50:14,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:50:14,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-28 02:50:14,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:14,103 INFO L225 Difference]: With dead ends: 13 [2019-11-28 02:50:14,103 INFO L226 Difference]: Without dead ends: 12 [2019-11-28 02:50:14,103 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:50:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-28 02:50:14,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-28 02:50:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 02:50:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-28 02:50:14,107 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2019-11-28 02:50:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:14,107 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-28 02:50:14,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 02:50:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-28 02:50:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 02:50:14,108 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:14,108 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-28 02:50:14,109 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:14,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:14,109 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-11-28 02:50:14,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:14,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561812657] [2019-11-28 02:50:14,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:14,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561812657] [2019-11-28 02:50:14,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087713334] [2019-11-28 02:50:14,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:14,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 02:50:14,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:14,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:14,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-28 02:50:14,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112230118] [2019-11-28 02:50:14,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:50:14,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:14,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:50:14,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:50:14,229 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-11-28 02:50:14,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:14,267 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-11-28 02:50:14,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:50:14,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 02:50:14,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:14,269 INFO L225 Difference]: With dead ends: 17 [2019-11-28 02:50:14,269 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 02:50:14,270 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:50:14,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 02:50:14,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-11-28 02:50:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-28 02:50:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-11-28 02:50:14,275 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2019-11-28 02:50:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:14,276 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-11-28 02:50:14,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:50:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-11-28 02:50:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 02:50:14,277 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:14,278 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-28 02:50:14,488 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:14,488 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:14,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:14,489 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-11-28 02:50:14,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:14,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287982274] [2019-11-28 02:50:14,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:14,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287982274] [2019-11-28 02:50:14,549 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437716178] [2019-11-28 02:50:14,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-28 02:50:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:14,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 02:50:14,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:14,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:14,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-11-28 02:50:14,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020378310] [2019-11-28 02:50:14,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:50:14,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:14,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:50:14,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:50:14,603 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2019-11-28 02:50:14,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:14,621 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-28 02:50:14,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:50:14,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 02:50:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:14,622 INFO L225 Difference]: With dead ends: 19 [2019-11-28 02:50:14,622 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 02:50:14,623 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:50:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 02:50:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-28 02:50:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 02:50:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-11-28 02:50:14,627 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-11-28 02:50:14,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:14,628 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-11-28 02:50:14,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:50:14,628 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-11-28 02:50:14,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 02:50:14,628 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:14,628 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2019-11-28 02:50:14,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:14,830 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:14,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:14,831 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2019-11-28 02:50:14,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:14,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696857644] [2019-11-28 02:50:14,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:14,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696857644] [2019-11-28 02:50:14,888 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9492851] [2019-11-28 02:50:14,888 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:14,929 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:50:14,930 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:14,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:50:14,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:14,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:14,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-28 02:50:14,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177053542] [2019-11-28 02:50:14,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:50:14,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:14,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:50:14,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:50:14,963 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-11-28 02:50:15,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:15,015 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-28 02:50:15,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:50:15,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-28 02:50:15,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:15,017 INFO L225 Difference]: With dead ends: 22 [2019-11-28 02:50:15,017 INFO L226 Difference]: Without dead ends: 21 [2019-11-28 02:50:15,018 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:50:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-28 02:50:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-28 02:50:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 02:50:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-28 02:50:15,027 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2019-11-28 02:50:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:15,028 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-28 02:50:15,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:50:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-28 02:50:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 02:50:15,030 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:15,030 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-11-28 02:50:15,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:15,236 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:15,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:15,238 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-11-28 02:50:15,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:15,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198037591] [2019-11-28 02:50:15,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:15,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198037591] [2019-11-28 02:50:15,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483716726] [2019-11-28 02:50:15,291 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:15,314 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:50:15,314 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:15,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:50:15,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:15,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:15,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-28 02:50:15,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063260647] [2019-11-28 02:50:15,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:50:15,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:15,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:50:15,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:50:15,338 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-11-28 02:50:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:15,370 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-28 02:50:15,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:50:15,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-28 02:50:15,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:15,371 INFO L225 Difference]: With dead ends: 24 [2019-11-28 02:50:15,372 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 02:50:15,372 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:50:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 02:50:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-28 02:50:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 02:50:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-28 02:50:15,378 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2019-11-28 02:50:15,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:15,380 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-28 02:50:15,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:50:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-28 02:50:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 02:50:15,381 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:15,381 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2019-11-28 02:50:15,583 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:15,584 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:15,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:15,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2019-11-28 02:50:15,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:15,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701239036] [2019-11-28 02:50:15,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:15,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701239036] [2019-11-28 02:50:15,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213085741] [2019-11-28 02:50:15,655 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:15,695 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-28 02:50:15,696 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:15,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:50:15,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:15,728 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:15,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:15,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-28 02:50:15,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337852243] [2019-11-28 02:50:15,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:50:15,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:15,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:50:15,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:50:15,730 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2019-11-28 02:50:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:15,770 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-11-28 02:50:15,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:50:15,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-28 02:50:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:15,772 INFO L225 Difference]: With dead ends: 27 [2019-11-28 02:50:15,772 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 02:50:15,773 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:50:15,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 02:50:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-11-28 02:50:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 02:50:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-28 02:50:15,778 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2019-11-28 02:50:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:15,778 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-28 02:50:15,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:50:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-28 02:50:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:50:15,779 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:15,779 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-11-28 02:50:15,989 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:15,990 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:15,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-11-28 02:50:15,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:15,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553588518] [2019-11-28 02:50:15,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:16,067 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553588518] [2019-11-28 02:50:16,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458813570] [2019-11-28 02:50:16,068 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:16,100 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-28 02:50:16,100 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:16,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:50:16,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:16,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:16,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-28 02:50:16,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180092339] [2019-11-28 02:50:16,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 02:50:16,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:16,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:50:16,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:50:16,143 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2019-11-28 02:50:16,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:16,176 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-28 02:50:16,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:50:16,177 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-28 02:50:16,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:16,178 INFO L225 Difference]: With dead ends: 29 [2019-11-28 02:50:16,178 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 02:50:16,179 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:50:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 02:50:16,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-28 02:50:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 02:50:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-28 02:50:16,186 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2019-11-28 02:50:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:16,187 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-28 02:50:16,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 02:50:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-28 02:50:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 02:50:16,189 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:16,189 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2019-11-28 02:50:16,390 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:16,391 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:16,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:16,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2019-11-28 02:50:16,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:16,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264069810] [2019-11-28 02:50:16,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:16,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264069810] [2019-11-28 02:50:16,504 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858425748] [2019-11-28 02:50:16,504 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:16,532 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:50:16,533 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:16,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:50:16,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:16,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:16,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-28 02:50:16,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449687735] [2019-11-28 02:50:16,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:50:16,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:16,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:50:16,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:50:16,571 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2019-11-28 02:50:16,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:16,631 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-11-28 02:50:16,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:50:16,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2019-11-28 02:50:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:16,633 INFO L225 Difference]: With dead ends: 32 [2019-11-28 02:50:16,633 INFO L226 Difference]: Without dead ends: 31 [2019-11-28 02:50:16,634 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:50:16,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-28 02:50:16,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-11-28 02:50:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 02:50:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-11-28 02:50:16,640 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2019-11-28 02:50:16,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:16,641 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-11-28 02:50:16,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:50:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-11-28 02:50:16,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-28 02:50:16,642 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:16,642 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-11-28 02:50:16,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:16,853 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:16,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:16,854 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2019-11-28 02:50:16,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:16,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282141865] [2019-11-28 02:50:16,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:16,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282141865] [2019-11-28 02:50:16,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614551983] [2019-11-28 02:50:16,960 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:17,001 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:50:17,001 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:17,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:50:17,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:17,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:17,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-28 02:50:17,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427101235] [2019-11-28 02:50:17,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 02:50:17,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:17,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:50:17,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:50:17,062 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2019-11-28 02:50:17,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:17,095 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2019-11-28 02:50:17,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:50:17,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-28 02:50:17,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:17,097 INFO L225 Difference]: With dead ends: 34 [2019-11-28 02:50:17,097 INFO L226 Difference]: Without dead ends: 33 [2019-11-28 02:50:17,097 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:50:17,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-28 02:50:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-28 02:50:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-28 02:50:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-11-28 02:50:17,102 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2019-11-28 02:50:17,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:17,102 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-11-28 02:50:17,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 02:50:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-11-28 02:50:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-28 02:50:17,103 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:17,104 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2019-11-28 02:50:17,308 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:17,309 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:17,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:17,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2019-11-28 02:50:17,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:17,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497020694] [2019-11-28 02:50:17,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:17,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497020694] [2019-11-28 02:50:17,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915862865] [2019-11-28 02:50:17,393 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:17,419 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-28 02:50:17,419 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:17,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:50:17,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:17,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:17,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-28 02:50:17,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848547556] [2019-11-28 02:50:17,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 02:50:17,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:17,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:50:17,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:50:17,476 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2019-11-28 02:50:17,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:17,529 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2019-11-28 02:50:17,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:50:17,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-11-28 02:50:17,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:17,531 INFO L225 Difference]: With dead ends: 37 [2019-11-28 02:50:17,531 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 02:50:17,532 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:50:17,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 02:50:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-11-28 02:50:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-28 02:50:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2019-11-28 02:50:17,537 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2019-11-28 02:50:17,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:17,538 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2019-11-28 02:50:17,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 02:50:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2019-11-28 02:50:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-28 02:50:17,539 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:17,539 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2019-11-28 02:50:17,742 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:17,743 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:17,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:17,744 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2019-11-28 02:50:17,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:17,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653162707] [2019-11-28 02:50:17,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:17,826 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:17,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653162707] [2019-11-28 02:50:17,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077230944] [2019-11-28 02:50:17,827 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:17,864 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-28 02:50:17,864 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:17,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:50:17,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:17,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:17,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-28 02:50:17,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881055390] [2019-11-28 02:50:17,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 02:50:17,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:17,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:50:17,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:50:17,940 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2019-11-28 02:50:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:17,976 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2019-11-28 02:50:17,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:50:17,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-28 02:50:17,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:17,977 INFO L225 Difference]: With dead ends: 39 [2019-11-28 02:50:17,978 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 02:50:17,978 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:50:17,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 02:50:17,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2019-11-28 02:50:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-28 02:50:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2019-11-28 02:50:17,983 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2019-11-28 02:50:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:17,983 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2019-11-28 02:50:17,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 02:50:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2019-11-28 02:50:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-28 02:50:17,984 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:17,984 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2019-11-28 02:50:18,184 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:18,185 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:18,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:18,186 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2019-11-28 02:50:18,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:18,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727396383] [2019-11-28 02:50:18,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:18,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727396383] [2019-11-28 02:50:18,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669893656] [2019-11-28 02:50:18,271 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:18,297 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-28 02:50:18,297 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:18,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:50:18,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:18,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:18,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-28 02:50:18,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639477897] [2019-11-28 02:50:18,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 02:50:18,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:18,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 02:50:18,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:50:18,354 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2019-11-28 02:50:18,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:18,397 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-11-28 02:50:18,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:50:18,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-11-28 02:50:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:18,401 INFO L225 Difference]: With dead ends: 42 [2019-11-28 02:50:18,401 INFO L226 Difference]: Without dead ends: 41 [2019-11-28 02:50:18,402 INFO L630 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 [2019-11-28 02:50:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-28 02:50:18,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-28 02:50:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-28 02:50:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-11-28 02:50:18,407 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2019-11-28 02:50:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:18,408 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-11-28 02:50:18,408 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 02:50:18,408 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-11-28 02:50:18,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-28 02:50:18,409 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:18,410 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2019-11-28 02:50:18,613 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:18,613 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:18,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:18,614 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2019-11-28 02:50:18,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:18,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119260804] [2019-11-28 02:50:18,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:18,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119260804] [2019-11-28 02:50:18,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485775248] [2019-11-28 02:50:18,713 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:18,745 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-28 02:50:18,746 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:18,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:50:18,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:18,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:18,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-28 02:50:18,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876013543] [2019-11-28 02:50:18,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 02:50:18,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:18,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 02:50:18,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:50:18,820 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2019-11-28 02:50:18,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:18,853 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2019-11-28 02:50:18,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:50:18,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2019-11-28 02:50:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:18,855 INFO L225 Difference]: With dead ends: 44 [2019-11-28 02:50:18,855 INFO L226 Difference]: Without dead ends: 43 [2019-11-28 02:50:18,855 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:50:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-28 02:50:18,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-11-28 02:50:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-28 02:50:18,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-11-28 02:50:18,859 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2019-11-28 02:50:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:18,859 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2019-11-28 02:50:18,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 02:50:18,860 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2019-11-28 02:50:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-28 02:50:18,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:18,860 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2019-11-28 02:50:19,063 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:19,064 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:19,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:19,065 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2019-11-28 02:50:19,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:19,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600313424] [2019-11-28 02:50:19,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:19,148 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600313424] [2019-11-28 02:50:19,149 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323200456] [2019-11-28 02:50:19,149 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:19,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 02:50:19,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:19,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:19,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-28 02:50:19,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023961821] [2019-11-28 02:50:19,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 02:50:19,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:19,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 02:50:19,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:50:19,256 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2019-11-28 02:50:19,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:19,300 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2019-11-28 02:50:19,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 02:50:19,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-28 02:50:19,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:19,301 INFO L225 Difference]: With dead ends: 47 [2019-11-28 02:50:19,301 INFO L226 Difference]: Without dead ends: 46 [2019-11-28 02:50:19,302 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:50:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-28 02:50:19,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2019-11-28 02:50:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 02:50:19,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2019-11-28 02:50:19,307 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2019-11-28 02:50:19,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:19,308 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2019-11-28 02:50:19,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 02:50:19,308 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2019-11-28 02:50:19,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-28 02:50:19,309 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:19,309 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2019-11-28 02:50:19,512 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:19,512 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2019-11-28 02:50:19,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:19,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491545353] [2019-11-28 02:50:19,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:19,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491545353] [2019-11-28 02:50:19,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953629997] [2019-11-28 02:50:19,590 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:19,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 02:50:19,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:19,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:19,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-28 02:50:19,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121299536] [2019-11-28 02:50:19,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 02:50:19,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:19,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 02:50:19,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:50:19,689 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2019-11-28 02:50:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:19,725 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2019-11-28 02:50:19,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 02:50:19,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-11-28 02:50:19,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:19,726 INFO L225 Difference]: With dead ends: 49 [2019-11-28 02:50:19,726 INFO L226 Difference]: Without dead ends: 48 [2019-11-28 02:50:19,727 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:50:19,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-28 02:50:19,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2019-11-28 02:50:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-28 02:50:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2019-11-28 02:50:19,733 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2019-11-28 02:50:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:19,733 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2019-11-28 02:50:19,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 02:50:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2019-11-28 02:50:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-28 02:50:19,734 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:19,735 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2019-11-28 02:50:19,938 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:19,938 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:19,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2019-11-28 02:50:19,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:19,939 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217016356] [2019-11-28 02:50:19,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:20,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217016356] [2019-11-28 02:50:20,029 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146112370] [2019-11-28 02:50:20,029 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:20,065 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:50:20,065 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:20,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 02:50:20,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:20,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:20,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-28 02:50:20,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662443687] [2019-11-28 02:50:20,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 02:50:20,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:20,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 02:50:20,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-28 02:50:20,143 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2019-11-28 02:50:20,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:20,194 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2019-11-28 02:50:20,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 02:50:20,195 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2019-11-28 02:50:20,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:20,195 INFO L225 Difference]: With dead ends: 52 [2019-11-28 02:50:20,195 INFO L226 Difference]: Without dead ends: 51 [2019-11-28 02:50:20,196 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-28 02:50:20,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-28 02:50:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2019-11-28 02:50:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-28 02:50:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2019-11-28 02:50:20,201 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2019-11-28 02:50:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:20,201 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2019-11-28 02:50:20,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 02:50:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2019-11-28 02:50:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-28 02:50:20,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:20,202 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2019-11-28 02:50:20,406 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:20,407 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:20,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:20,407 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2019-11-28 02:50:20,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:20,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039861213] [2019-11-28 02:50:20,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:20,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039861213] [2019-11-28 02:50:20,496 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359647327] [2019-11-28 02:50:20,496 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:20,536 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:50:20,537 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:20,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 02:50:20,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:20,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:20,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-28 02:50:20,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051997489] [2019-11-28 02:50:20,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 02:50:20,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:20,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 02:50:20,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-28 02:50:20,628 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2019-11-28 02:50:20,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:20,664 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-11-28 02:50:20,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 02:50:20,665 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2019-11-28 02:50:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:20,665 INFO L225 Difference]: With dead ends: 54 [2019-11-28 02:50:20,665 INFO L226 Difference]: Without dead ends: 53 [2019-11-28 02:50:20,666 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-28 02:50:20,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-28 02:50:20,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-11-28 02:50:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-28 02:50:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-11-28 02:50:20,672 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2019-11-28 02:50:20,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:20,673 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-11-28 02:50:20,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 02:50:20,673 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-11-28 02:50:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-28 02:50:20,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:20,674 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2019-11-28 02:50:20,880 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:20,881 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:20,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:20,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2019-11-28 02:50:20,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:20,882 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075451258] [2019-11-28 02:50:20,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:20,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075451258] [2019-11-28 02:50:20,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028230801] [2019-11-28 02:50:20,977 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:21,011 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-28 02:50:21,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:21,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 02:50:21,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:21,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:21,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-28 02:50:21,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198585161] [2019-11-28 02:50:21,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 02:50:21,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:21,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 02:50:21,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:50:21,100 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2019-11-28 02:50:21,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:21,149 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2019-11-28 02:50:21,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 02:50:21,150 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2019-11-28 02:50:21,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:21,151 INFO L225 Difference]: With dead ends: 57 [2019-11-28 02:50:21,151 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 02:50:21,152 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:50:21,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 02:50:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2019-11-28 02:50:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-28 02:50:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2019-11-28 02:50:21,156 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2019-11-28 02:50:21,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:21,156 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2019-11-28 02:50:21,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 02:50:21,157 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2019-11-28 02:50:21,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-28 02:50:21,157 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:21,157 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2019-11-28 02:50:21,361 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:21,362 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:21,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:21,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2019-11-28 02:50:21,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:21,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871353724] [2019-11-28 02:50:21,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:21,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871353724] [2019-11-28 02:50:21,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727463754] [2019-11-28 02:50:21,459 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:21,487 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-28 02:50:21,488 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:21,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 02:50:21,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:21,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:21,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-28 02:50:21,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067538943] [2019-11-28 02:50:21,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 02:50:21,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:21,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 02:50:21,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:50:21,585 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2019-11-28 02:50:21,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:21,636 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2019-11-28 02:50:21,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 02:50:21,638 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-11-28 02:50:21,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:21,638 INFO L225 Difference]: With dead ends: 59 [2019-11-28 02:50:21,638 INFO L226 Difference]: Without dead ends: 58 [2019-11-28 02:50:21,639 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:50:21,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-11-28 02:50:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2019-11-28 02:50:21,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-28 02:50:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2019-11-28 02:50:21,643 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2019-11-28 02:50:21,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:21,644 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2019-11-28 02:50:21,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 02:50:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2019-11-28 02:50:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-28 02:50:21,644 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:21,645 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2019-11-28 02:50:21,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:21,852 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:21,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:21,853 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2019-11-28 02:50:21,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:21,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348419651] [2019-11-28 02:50:21,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:21,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348419651] [2019-11-28 02:50:21,975 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927891752] [2019-11-28 02:50:21,975 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:22,016 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:50:22,017 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:22,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 02:50:22,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:22,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:22,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-28 02:50:22,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590714522] [2019-11-28 02:50:22,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 02:50:22,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:22,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 02:50:22,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-28 02:50:22,153 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2019-11-28 02:50:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:22,210 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2019-11-28 02:50:22,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 02:50:22,210 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2019-11-28 02:50:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:22,211 INFO L225 Difference]: With dead ends: 62 [2019-11-28 02:50:22,212 INFO L226 Difference]: Without dead ends: 61 [2019-11-28 02:50:22,212 INFO L630 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 [2019-11-28 02:50:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-28 02:50:22,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2019-11-28 02:50:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-28 02:50:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2019-11-28 02:50:22,217 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2019-11-28 02:50:22,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:22,218 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2019-11-28 02:50:22,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 02:50:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2019-11-28 02:50:22,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-28 02:50:22,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:22,219 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-11-28 02:50:22,422 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:22,423 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:22,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:22,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2019-11-28 02:50:22,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:22,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852156031] [2019-11-28 02:50:22,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:22,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852156031] [2019-11-28 02:50:22,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633544628] [2019-11-28 02:50:22,548 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:22,580 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:50:22,580 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:22,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 02:50:22,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:22,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:22,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-11-28 02:50:22,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006348348] [2019-11-28 02:50:22,733 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 02:50:22,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:22,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 02:50:22,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-28 02:50:22,736 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2019-11-28 02:50:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:22,790 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-11-28 02:50:22,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 02:50:22,791 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2019-11-28 02:50:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:22,792 INFO L225 Difference]: With dead ends: 64 [2019-11-28 02:50:22,792 INFO L226 Difference]: Without dead ends: 63 [2019-11-28 02:50:22,793 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-28 02:50:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-28 02:50:22,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-11-28 02:50:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-28 02:50:22,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2019-11-28 02:50:22,804 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2019-11-28 02:50:22,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:22,808 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2019-11-28 02:50:22,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 02:50:22,808 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2019-11-28 02:50:22,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-28 02:50:22,809 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:22,809 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2019-11-28 02:50:23,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:23,013 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:23,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:23,013 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2019-11-28 02:50:23,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:23,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580415628] [2019-11-28 02:50:23,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:23,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580415628] [2019-11-28 02:50:23,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852435765] [2019-11-28 02:50:23,134 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:23,171 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-28 02:50:23,171 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:23,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 02:50:23,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:23,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:23,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-28 02:50:23,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246537780] [2019-11-28 02:50:23,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 02:50:23,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:23,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 02:50:23,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-28 02:50:23,288 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2019-11-28 02:50:23,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:23,358 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2019-11-28 02:50:23,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 02:50:23,364 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2019-11-28 02:50:23,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:23,365 INFO L225 Difference]: With dead ends: 67 [2019-11-28 02:50:23,365 INFO L226 Difference]: Without dead ends: 66 [2019-11-28 02:50:23,365 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-28 02:50:23,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-28 02:50:23,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2019-11-28 02:50:23,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-28 02:50:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2019-11-28 02:50:23,369 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2019-11-28 02:50:23,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:23,369 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2019-11-28 02:50:23,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 02:50:23,369 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2019-11-28 02:50:23,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-28 02:50:23,370 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:23,370 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2019-11-28 02:50:23,573 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:23,574 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:23,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:23,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2019-11-28 02:50:23,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:23,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432377608] [2019-11-28 02:50:23,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:23,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432377608] [2019-11-28 02:50:23,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128040579] [2019-11-28 02:50:23,701 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:23,736 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-28 02:50:23,737 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:23,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-28 02:50:23,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:23,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:23,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-11-28 02:50:23,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048917690] [2019-11-28 02:50:23,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 02:50:23,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:23,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 02:50:23,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-28 02:50:23,843 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2019-11-28 02:50:23,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:23,902 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2019-11-28 02:50:23,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 02:50:23,903 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2019-11-28 02:50:23,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:23,904 INFO L225 Difference]: With dead ends: 69 [2019-11-28 02:50:23,904 INFO L226 Difference]: Without dead ends: 68 [2019-11-28 02:50:23,904 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-11-28 02:50:23,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-28 02:50:23,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2019-11-28 02:50:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-28 02:50:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2019-11-28 02:50:23,908 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2019-11-28 02:50:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:23,909 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2019-11-28 02:50:23,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 02:50:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2019-11-28 02:50:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-28 02:50:23,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:23,910 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2019-11-28 02:50:24,112 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:24,113 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:24,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:24,113 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2019-11-28 02:50:24,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:24,114 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075295680] [2019-11-28 02:50:24,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:24,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075295680] [2019-11-28 02:50:24,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311828329] [2019-11-28 02:50:24,258 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:24,315 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-28 02:50:24,315 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:24,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 02:50:24,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:24,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:24,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-11-28 02:50:24,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930128006] [2019-11-28 02:50:24,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-28 02:50:24,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:24,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-28 02:50:24,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-28 02:50:24,486 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2019-11-28 02:50:24,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:24,563 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2019-11-28 02:50:24,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 02:50:24,563 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2019-11-28 02:50:24,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:24,564 INFO L225 Difference]: With dead ends: 72 [2019-11-28 02:50:24,564 INFO L226 Difference]: Without dead ends: 71 [2019-11-28 02:50:24,564 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-28 02:50:24,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-28 02:50:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2019-11-28 02:50:24,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-28 02:50:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2019-11-28 02:50:24,568 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2019-11-28 02:50:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:24,568 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2019-11-28 02:50:24,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-28 02:50:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2019-11-28 02:50:24,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-28 02:50:24,569 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:24,569 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2019-11-28 02:50:24,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:24,772 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:24,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:24,773 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2019-11-28 02:50:24,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:24,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651124929] [2019-11-28 02:50:24,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:24,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651124929] [2019-11-28 02:50:24,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183786410] [2019-11-28 02:50:24,934 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:24,974 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-28 02:50:24,975 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:24,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-28 02:50:24,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:25,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:25,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-11-28 02:50:25,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96786983] [2019-11-28 02:50:25,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-28 02:50:25,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:25,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-28 02:50:25,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-28 02:50:25,094 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2019-11-28 02:50:25,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:25,156 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2019-11-28 02:50:25,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-28 02:50:25,157 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2019-11-28 02:50:25,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:25,157 INFO L225 Difference]: With dead ends: 74 [2019-11-28 02:50:25,157 INFO L226 Difference]: Without dead ends: 73 [2019-11-28 02:50:25,158 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-11-28 02:50:25,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-28 02:50:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2019-11-28 02:50:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-28 02:50:25,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2019-11-28 02:50:25,162 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2019-11-28 02:50:25,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:25,162 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2019-11-28 02:50:25,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-28 02:50:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2019-11-28 02:50:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-28 02:50:25,163 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:25,163 INFO L410 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2019-11-28 02:50:25,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:25,367 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:25,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:25,368 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2019-11-28 02:50:25,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:25,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013933504] [2019-11-28 02:50:25,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:25,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013933504] [2019-11-28 02:50:25,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082938232] [2019-11-28 02:50:25,558 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:25,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 02:50:25,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:25,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:25,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-28 02:50:25,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882186523] [2019-11-28 02:50:25,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-28 02:50:25,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:25,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-28 02:50:25,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-28 02:50:25,735 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2019-11-28 02:50:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:25,798 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2019-11-28 02:50:25,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-28 02:50:25,799 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2019-11-28 02:50:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:25,800 INFO L225 Difference]: With dead ends: 77 [2019-11-28 02:50:25,800 INFO L226 Difference]: Without dead ends: 76 [2019-11-28 02:50:25,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-28 02:50:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-11-28 02:50:25,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2019-11-28 02:50:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-28 02:50:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2019-11-28 02:50:25,806 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2019-11-28 02:50:25,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:25,806 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2019-11-28 02:50:25,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-28 02:50:25,806 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2019-11-28 02:50:25,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-28 02:50:25,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:25,808 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2019-11-28 02:50:26,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:26,010 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:26,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:26,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2019-11-28 02:50:26,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:26,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297710851] [2019-11-28 02:50:26,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:26,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297710851] [2019-11-28 02:50:26,201 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273957025] [2019-11-28 02:50:26,202 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:26,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-28 02:50:26,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:26,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:26,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-11-28 02:50:26,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596415057] [2019-11-28 02:50:26,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-28 02:50:26,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:26,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-28 02:50:26,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-28 02:50:26,411 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2019-11-28 02:50:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:26,466 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2019-11-28 02:50:26,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-28 02:50:26,466 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2019-11-28 02:50:26,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:26,467 INFO L225 Difference]: With dead ends: 79 [2019-11-28 02:50:26,467 INFO L226 Difference]: Without dead ends: 78 [2019-11-28 02:50:26,467 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-11-28 02:50:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-28 02:50:26,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2019-11-28 02:50:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-28 02:50:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2019-11-28 02:50:26,472 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2019-11-28 02:50:26,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:26,472 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2019-11-28 02:50:26,472 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-28 02:50:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2019-11-28 02:50:26,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-28 02:50:26,473 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:26,473 INFO L410 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2019-11-28 02:50:26,676 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:26,677 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2019-11-28 02:50:26,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:26,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930611975] [2019-11-28 02:50:26,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:26,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930611975] [2019-11-28 02:50:26,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807047873] [2019-11-28 02:50:26,833 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:26,868 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:50:26,868 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:26,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-28 02:50:26,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:27,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:27,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-11-28 02:50:27,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636595438] [2019-11-28 02:50:27,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 02:50:27,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:27,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 02:50:27,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-28 02:50:27,063 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2019-11-28 02:50:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:27,132 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2019-11-28 02:50:27,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-28 02:50:27,133 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2019-11-28 02:50:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:27,134 INFO L225 Difference]: With dead ends: 82 [2019-11-28 02:50:27,134 INFO L226 Difference]: Without dead ends: 81 [2019-11-28 02:50:27,134 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-28 02:50:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-11-28 02:50:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2019-11-28 02:50:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-28 02:50:27,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2019-11-28 02:50:27,138 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2019-11-28 02:50:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:27,138 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2019-11-28 02:50:27,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 02:50:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2019-11-28 02:50:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-28 02:50:27,139 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:27,139 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2019-11-28 02:50:27,342 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:27,342 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:27,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2019-11-28 02:50:27,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:27,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64425480] [2019-11-28 02:50:27,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:27,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64425480] [2019-11-28 02:50:27,491 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576258255] [2019-11-28 02:50:27,491 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:27,522 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:50:27,522 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:27,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-28 02:50:27,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:27,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:27,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-11-28 02:50:27,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474396557] [2019-11-28 02:50:27,662 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-28 02:50:27,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:27,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-28 02:50:27,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-28 02:50:27,663 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2019-11-28 02:50:27,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:27,712 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2019-11-28 02:50:27,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-28 02:50:27,712 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2019-11-28 02:50:27,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:27,713 INFO L225 Difference]: With dead ends: 84 [2019-11-28 02:50:27,714 INFO L226 Difference]: Without dead ends: 83 [2019-11-28 02:50:27,714 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-11-28 02:50:27,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-28 02:50:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2019-11-28 02:50:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-28 02:50:27,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2019-11-28 02:50:27,721 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2019-11-28 02:50:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:27,721 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2019-11-28 02:50:27,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-28 02:50:27,722 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2019-11-28 02:50:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-28 02:50:27,722 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:27,722 INFO L410 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2019-11-28 02:50:27,925 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:27,926 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:27,927 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2019-11-28 02:50:27,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:27,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163725582] [2019-11-28 02:50:27,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:28,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163725582] [2019-11-28 02:50:28,097 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651702263] [2019-11-28 02:50:28,097 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:28,137 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-28 02:50:28,137 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:28,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-28 02:50:28,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:28,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:28,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-28 02:50:28,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925547982] [2019-11-28 02:50:28,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-28 02:50:28,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:28,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-28 02:50:28,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-28 02:50:28,305 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2019-11-28 02:50:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:28,367 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2019-11-28 02:50:28,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-28 02:50:28,367 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2019-11-28 02:50:28,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:28,369 INFO L225 Difference]: With dead ends: 87 [2019-11-28 02:50:28,369 INFO L226 Difference]: Without dead ends: 86 [2019-11-28 02:50:28,369 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-28 02:50:28,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-11-28 02:50:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2019-11-28 02:50:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-28 02:50:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2019-11-28 02:50:28,373 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2019-11-28 02:50:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:28,373 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2019-11-28 02:50:28,373 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-28 02:50:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2019-11-28 02:50:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-28 02:50:28,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:28,375 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2019-11-28 02:50:28,578 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:28,578 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:28,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:28,579 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2019-11-28 02:50:28,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:28,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258777638] [2019-11-28 02:50:28,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:28,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258777638] [2019-11-28 02:50:28,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683937037] [2019-11-28 02:50:28,743 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:28,783 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-11-28 02:50:28,783 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:28,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-28 02:50:28,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:28,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:28,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-11-28 02:50:28,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008140577] [2019-11-28 02:50:28,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-28 02:50:28,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:28,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-28 02:50:28,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-28 02:50:28,921 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2019-11-28 02:50:28,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:28,976 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2019-11-28 02:50:28,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-28 02:50:28,977 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2019-11-28 02:50:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:28,978 INFO L225 Difference]: With dead ends: 89 [2019-11-28 02:50:28,978 INFO L226 Difference]: Without dead ends: 88 [2019-11-28 02:50:28,978 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-11-28 02:50:28,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-28 02:50:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2019-11-28 02:50:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-28 02:50:28,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2019-11-28 02:50:28,981 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2019-11-28 02:50:28,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:28,981 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2019-11-28 02:50:28,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-28 02:50:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2019-11-28 02:50:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-28 02:50:28,982 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:28,982 INFO L410 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2019-11-28 02:50:29,185 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:29,185 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:29,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:29,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2019-11-28 02:50:29,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:29,187 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506499797] [2019-11-28 02:50:29,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:29,408 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506499797] [2019-11-28 02:50:29,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218351016] [2019-11-28 02:50:29,409 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:29,458 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:50:29,459 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:29,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-28 02:50:29,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:29,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:29,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-11-28 02:50:29,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223017254] [2019-11-28 02:50:29,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-28 02:50:29,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:29,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-28 02:50:29,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-28 02:50:29,783 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2019-11-28 02:50:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:29,861 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2019-11-28 02:50:29,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-28 02:50:29,862 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2019-11-28 02:50:29,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:29,863 INFO L225 Difference]: With dead ends: 92 [2019-11-28 02:50:29,863 INFO L226 Difference]: Without dead ends: 91 [2019-11-28 02:50:29,863 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-28 02:50:29,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-28 02:50:29,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2019-11-28 02:50:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-28 02:50:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2019-11-28 02:50:29,869 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2019-11-28 02:50:29,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:29,869 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2019-11-28 02:50:29,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-28 02:50:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2019-11-28 02:50:29,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-28 02:50:29,870 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:29,870 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2019-11-28 02:50:30,074 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:30,074 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:30,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:30,075 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2019-11-28 02:50:30,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:30,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274829971] [2019-11-28 02:50:30,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:30,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274829971] [2019-11-28 02:50:30,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944132011] [2019-11-28 02:50:30,326 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:30,363 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:50:30,363 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:30,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-28 02:50:30,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:30,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:30,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-11-28 02:50:30,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733782365] [2019-11-28 02:50:30,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-28 02:50:30,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:30,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-28 02:50:30,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-11-28 02:50:30,572 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2019-11-28 02:50:30,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:30,631 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2019-11-28 02:50:30,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-28 02:50:30,632 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2019-11-28 02:50:30,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:30,633 INFO L225 Difference]: With dead ends: 94 [2019-11-28 02:50:30,633 INFO L226 Difference]: Without dead ends: 93 [2019-11-28 02:50:30,634 INFO L630 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 [2019-11-28 02:50:30,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-28 02:50:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2019-11-28 02:50:30,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-28 02:50:30,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2019-11-28 02:50:30,638 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2019-11-28 02:50:30,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:30,639 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2019-11-28 02:50:30,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-28 02:50:30,639 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2019-11-28 02:50:30,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-28 02:50:30,640 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:30,640 INFO L410 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2019-11-28 02:50:30,843 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:30,843 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:30,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:30,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2019-11-28 02:50:30,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:30,844 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657006304] [2019-11-28 02:50:30,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:31,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657006304] [2019-11-28 02:50:31,237 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761996845] [2019-11-28 02:50:31,237 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:31,287 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-28 02:50:31,287 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:31,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-28 02:50:31,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:31,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:31,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-28 02:50:31,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735926722] [2019-11-28 02:50:31,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-28 02:50:31,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:31,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-28 02:50:31,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-28 02:50:31,490 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2019-11-28 02:50:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:31,580 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2019-11-28 02:50:31,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-28 02:50:31,580 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2019-11-28 02:50:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:31,582 INFO L225 Difference]: With dead ends: 97 [2019-11-28 02:50:31,582 INFO L226 Difference]: Without dead ends: 96 [2019-11-28 02:50:31,582 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-28 02:50:31,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-28 02:50:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2019-11-28 02:50:31,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-28 02:50:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2019-11-28 02:50:31,587 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2019-11-28 02:50:31,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:31,587 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2019-11-28 02:50:31,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-28 02:50:31,587 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2019-11-28 02:50:31,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-11-28 02:50:31,588 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:31,588 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2019-11-28 02:50:31,791 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:31,792 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:31,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:31,792 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2019-11-28 02:50:31,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:31,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918140118] [2019-11-28 02:50:31,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:32,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918140118] [2019-11-28 02:50:32,005 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652951667] [2019-11-28 02:50:32,005 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:32,075 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-11-28 02:50:32,076 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:32,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-28 02:50:32,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:32,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:32,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-11-28 02:50:32,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389145944] [2019-11-28 02:50:32,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-28 02:50:32,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:32,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-28 02:50:32,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-11-28 02:50:32,386 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2019-11-28 02:50:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:32,444 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2019-11-28 02:50:32,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-28 02:50:32,445 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2019-11-28 02:50:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:32,446 INFO L225 Difference]: With dead ends: 99 [2019-11-28 02:50:32,446 INFO L226 Difference]: Without dead ends: 98 [2019-11-28 02:50:32,446 INFO L630 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 [2019-11-28 02:50:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-28 02:50:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2019-11-28 02:50:32,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-28 02:50:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2019-11-28 02:50:32,450 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2019-11-28 02:50:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:32,451 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2019-11-28 02:50:32,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-28 02:50:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2019-11-28 02:50:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-28 02:50:32,452 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:32,452 INFO L410 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2019-11-28 02:50:32,656 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:32,656 INFO L410 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:32,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:32,657 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2019-11-28 02:50:32,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:32,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554983954] [2019-11-28 02:50:32,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:32,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554983954] [2019-11-28 02:50:32,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345531876] [2019-11-28 02:50:32,958 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:33,032 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-28 02:50:33,033 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:33,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-28 02:50:33,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:33,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:33,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-11-28 02:50:33,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409600043] [2019-11-28 02:50:33,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-28 02:50:33,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:33,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-28 02:50:33,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-28 02:50:33,375 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2019-11-28 02:50:33,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:33,468 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2019-11-28 02:50:33,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-28 02:50:33,469 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2019-11-28 02:50:33,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:33,470 INFO L225 Difference]: With dead ends: 102 [2019-11-28 02:50:33,470 INFO L226 Difference]: Without dead ends: 101 [2019-11-28 02:50:33,471 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-28 02:50:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-28 02:50:33,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2019-11-28 02:50:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-11-28 02:50:33,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2019-11-28 02:50:33,475 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2019-11-28 02:50:33,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:33,475 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2019-11-28 02:50:33,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-28 02:50:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2019-11-28 02:50:33,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-11-28 02:50:33,476 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:33,476 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2019-11-28 02:50:33,680 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:33,681 INFO L410 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2019-11-28 02:50:33,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:33,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752617318] [2019-11-28 02:50:33,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:33,945 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752617318] [2019-11-28 02:50:33,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173672163] [2019-11-28 02:50:33,946 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:34,020 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-11-28 02:50:34,020 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:50:34,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-28 02:50:34,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:34,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:34,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-11-28 02:50:34,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119108878] [2019-11-28 02:50:34,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-28 02:50:34,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:34,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-28 02:50:34,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-11-28 02:50:34,321 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2019-11-28 02:50:34,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:34,384 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2019-11-28 02:50:34,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-28 02:50:34,384 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2019-11-28 02:50:34,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:34,385 INFO L225 Difference]: With dead ends: 104 [2019-11-28 02:50:34,385 INFO L226 Difference]: Without dead ends: 103 [2019-11-28 02:50:34,386 INFO L630 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 [2019-11-28 02:50:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-28 02:50:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2019-11-28 02:50:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-11-28 02:50:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2019-11-28 02:50:34,390 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2019-11-28 02:50:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:34,390 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2019-11-28 02:50:34,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-28 02:50:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2019-11-28 02:50:34,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-28 02:50:34,391 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:34,391 INFO L410 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2019-11-28 02:50:34,595 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:34,595 INFO L410 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:34,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:34,596 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2019-11-28 02:50:34,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:34,597 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27725778] [2019-11-28 02:50:34,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:34,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27725778] [2019-11-28 02:50:34,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625329947] [2019-11-28 02:50:34,849 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:50:34,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-28 02:50:34,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:50:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:50:35,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:50:35,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-11-28 02:50:35,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232517782] [2019-11-28 02:50:35,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-28 02:50:35,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:50:35,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-28 02:50:35,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-28 02:50:35,103 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2019-11-28 02:50:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:50:35,229 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2019-11-28 02:50:35,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-28 02:50:35,230 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2019-11-28 02:50:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:50:35,231 INFO L225 Difference]: With dead ends: 107 [2019-11-28 02:50:35,231 INFO L226 Difference]: Without dead ends: 106 [2019-11-28 02:50:35,232 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-11-28 02:50:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-28 02:50:35,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2019-11-28 02:50:35,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-11-28 02:50:35,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2019-11-28 02:50:35,236 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2019-11-28 02:50:35,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:50:35,236 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2019-11-28 02:50:35,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-28 02:50:35,237 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2019-11-28 02:50:35,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-28 02:50:35,238 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:50:35,238 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2019-11-28 02:50:35,441 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:50:35,441 INFO L410 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-28 02:50:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:50:35,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2019-11-28 02:50:35,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:50:35,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241860524] [2019-11-28 02:50:35,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:50:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:50:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:50:35,509 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:50:35,509 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:50:35,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:50:35 BoogieIcfgContainer [2019-11-28 02:50:35,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:50:35,553 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:50:35,553 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:50:35,553 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:50:35,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:50:13" (3/4) ... [2019-11-28 02:50:35,555 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:50:35,607 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:50:35,608 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:50:35,610 INFO L168 Benchmark]: Toolchain (without parser) took 22661.05 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 368.1 MB). Free memory was 956.3 MB in the beginning and 1.0 GB in the end (delta: -90.5 MB). Peak memory consumption was 277.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:50:35,611 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:50:35,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.08 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:50:35,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:50:35,612 INFO L168 Benchmark]: Boogie Preprocessor took 20.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:50:35,613 INFO L168 Benchmark]: RCFGBuilder took 214.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:50:35,613 INFO L168 Benchmark]: TraceAbstraction took 22026.91 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 241.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.0 MB). Peak memory consumption was 298.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:50:35,614 INFO L168 Benchmark]: Witness Printer took 55.11 ms. Allocated memory is still 1.4 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:50:35,616 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.08 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 89.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.71 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 214.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 22026.91 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 241.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.0 MB). Peak memory consumption was 298.1 MB. Max. memory is 11.5 GB. * Witness Printer took 55.11 ms. Allocated memory is still 1.4 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] 3*y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: UNSAFE, OverallTime: 21.9s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1318 SDs, 0 SdLazy, 1445 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 7.8s 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, 1.0s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 4022 NumberOfCodeBlocks, 4022 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 3844 ConstructedInterpolants, 0 QuantifiedInterpolants, 753036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3617 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 0/23218 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...