./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 94b61e96441ca10668b436b4ef10dfd9464f0863 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:29:23,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:29:23,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:29:23,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:29:23,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:29:23,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:29:23,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:29:23,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:29:23,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:29:23,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:29:23,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:29:23,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:29:23,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:29:23,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:29:23,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:29:23,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:29:23,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:29:23,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:29:23,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:29:23,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:29:23,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:29:23,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:29:23,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:29:23,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:29:23,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:29:23,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:29:23,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:29:23,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:29:23,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:29:23,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:29:23,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:29:23,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:29:23,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:29:23,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:29:23,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:29:23,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:29:23,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:29:23,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:29:23,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:29:23,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:29:23,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:29:23,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:29:23,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:29:23,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:29:23,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:29:23,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:29:23,718 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:29:23,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:29:23,718 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:29:23,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:29:23,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:29:23,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:29:23,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:29:23,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:29:23,721 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:29:23,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:29:23,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:29:23,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:29:23,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:29:23,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:29:23,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:29:23,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:29:23,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:29:23,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:29:23,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:29:23,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:29:23,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:29:23,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:29:23,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:29:23,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:29:23,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2020-10-19 18:29:24,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:29:24,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:29:24,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:29:24,096 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:29:24,099 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:29:24,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NonTermination4.c [2020-10-19 18:29:24,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2b3bf23/38530e14f86a408683f8f794fac08395/FLAGb41ddb283 [2020-10-19 18:29:24,655 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:29:24,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NonTermination4.c [2020-10-19 18:29:24,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2b3bf23/38530e14f86a408683f8f794fac08395/FLAGb41ddb283 [2020-10-19 18:29:24,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b2b3bf23/38530e14f86a408683f8f794fac08395 [2020-10-19 18:29:25,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:29:25,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:29:25,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:29:25,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:29:25,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:29:25,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:29:24" (1/1) ... [2020-10-19 18:29:25,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf883e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25, skipping insertion in model container [2020-10-19 18:29:25,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:29:24" (1/1) ... [2020-10-19 18:29:25,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:29:25,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:29:25,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:29:25,247 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:29:25,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:29:25,282 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:29:25,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25 WrapperNode [2020-10-19 18:29:25,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:29:25,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:29:25,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:29:25,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:29:25,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25" (1/1) ... [2020-10-19 18:29:25,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25" (1/1) ... [2020-10-19 18:29:25,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:29:25,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:29:25,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:29:25,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:29:25,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25" (1/1) ... [2020-10-19 18:29:25,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25" (1/1) ... [2020-10-19 18:29:25,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25" (1/1) ... [2020-10-19 18:29:25,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25" (1/1) ... [2020-10-19 18:29:25,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25" (1/1) ... [2020-10-19 18:29:25,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25" (1/1) ... [2020-10-19 18:29:25,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25" (1/1) ... [2020-10-19 18:29:25,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:29:25,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:29:25,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:29:25,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:29:25,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:29:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:29:25,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:29:25,625 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:29:25,625 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:29:25,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:29:25 BoogieIcfgContainer [2020-10-19 18:29:25,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:29:25,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:29:25,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:29:25,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:29:25,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:29:24" (1/3) ... [2020-10-19 18:29:25,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fb4001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:29:25, skipping insertion in model container [2020-10-19 18:29:25,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:29:25" (2/3) ... [2020-10-19 18:29:25,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fb4001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:29:25, skipping insertion in model container [2020-10-19 18:29:25,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:29:25" (3/3) ... [2020-10-19 18:29:25,635 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2020-10-19 18:29:25,646 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:29:25,653 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-19 18:29:25,667 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-19 18:29:25,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:29:25,690 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:29:25,691 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:29:25,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:29:25,691 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:29:25,691 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:29:25,691 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:29:25,691 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:29:25,705 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-19 18:29:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-19 18:29:25,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:25,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-19 18:29:25,712 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:25,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:25,717 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-19 18:29:25,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:25,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774472357] [2020-10-19 18:29:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:25,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:25,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774472357] [2020-10-19 18:29:25,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:29:25,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-19 18:29:25,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818135388] [2020-10-19 18:29:25,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:29:25,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:25,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:29:25,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:25,900 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-10-19 18:29:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:25,961 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-10-19 18:29:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:29:25,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-10-19 18:29:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:25,976 INFO L225 Difference]: With dead ends: 22 [2020-10-19 18:29:25,976 INFO L226 Difference]: Without dead ends: 13 [2020-10-19 18:29:25,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:26,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-19 18:29:26,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-10-19 18:29:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 18:29:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-19 18:29:26,024 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2020-10-19 18:29:26,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:26,025 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-19 18:29:26,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:29:26,025 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-19 18:29:26,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:29:26,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:26,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:29:26,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:29:26,027 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:26,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:26,027 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-10-19 18:29:26,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:26,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955455537] [2020-10-19 18:29:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:26,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955455537] [2020-10-19 18:29:26,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:29:26,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-19 18:29:26,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992522498] [2020-10-19 18:29:26,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:29:26,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:26,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:29:26,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:26,053 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2020-10-19 18:29:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:26,066 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-10-19 18:29:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:29:26,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-19 18:29:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:26,068 INFO L225 Difference]: With dead ends: 12 [2020-10-19 18:29:26,068 INFO L226 Difference]: Without dead ends: 11 [2020-10-19 18:29:26,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-19 18:29:26,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-19 18:29:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-19 18:29:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-19 18:29:26,073 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2020-10-19 18:29:26,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:26,074 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-19 18:29:26,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:29:26,074 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-19 18:29:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-19 18:29:26,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:26,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-19 18:29:26,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:29:26,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:26,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:26,076 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-10-19 18:29:26,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:26,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944887903] [2020-10-19 18:29:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:26,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944887903] [2020-10-19 18:29:26,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:29:26,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-19 18:29:26,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50112698] [2020-10-19 18:29:26,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:29:26,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:26,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:29:26,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:26,147 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2020-10-19 18:29:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:26,173 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-10-19 18:29:26,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:29:26,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-19 18:29:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:26,174 INFO L225 Difference]: With dead ends: 15 [2020-10-19 18:29:26,175 INFO L226 Difference]: Without dead ends: 14 [2020-10-19 18:29:26,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-19 18:29:26,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-19 18:29:26,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-19 18:29:26,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-19 18:29:26,179 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2020-10-19 18:29:26,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:26,180 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-19 18:29:26,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:29:26,180 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-19 18:29:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-19 18:29:26,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:26,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-19 18:29:26,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:29:26,181 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:26,182 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-10-19 18:29:26,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:26,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639411741] [2020-10-19 18:29:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:26,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639411741] [2020-10-19 18:29:26,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:29:26,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-19 18:29:26,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754054367] [2020-10-19 18:29:26,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:29:26,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:26,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:29:26,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:26,209 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-10-19 18:29:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:26,219 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-10-19 18:29:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:29:26,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-19 18:29:26,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:26,220 INFO L225 Difference]: With dead ends: 13 [2020-10-19 18:29:26,220 INFO L226 Difference]: Without dead ends: 12 [2020-10-19 18:29:26,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:29:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-10-19 18:29:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-10-19 18:29:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 18:29:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-19 18:29:26,225 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2020-10-19 18:29:26,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:26,225 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-19 18:29:26,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:29:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-19 18:29:26,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:29:26,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:26,226 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-19 18:29:26,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:29:26,227 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:26,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:26,227 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2020-10-19 18:29:26,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:26,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159474426] [2020-10-19 18:29:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:26,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159474426] [2020-10-19 18:29:26,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366876883] [2020-10-19 18:29:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:26,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:29:26,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:26,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:26,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-10-19 18:29:26,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6725987] [2020-10-19 18:29:26,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:29:26,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:26,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:29:26,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:29:26,356 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-10-19 18:29:26,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:26,428 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-10-19 18:29:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:29:26,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-19 18:29:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:26,430 INFO L225 Difference]: With dead ends: 17 [2020-10-19 18:29:26,430 INFO L226 Difference]: Without dead ends: 16 [2020-10-19 18:29:26,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:29:26,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-19 18:29:26,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-19 18:29:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-19 18:29:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-19 18:29:26,439 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-10-19 18:29:26,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:26,440 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-19 18:29:26,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:29:26,440 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-19 18:29:26,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:29:26,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:26,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-10-19 18:29:26,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:26,643 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:26,644 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2020-10-19 18:29:26,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:26,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777015713] [2020-10-19 18:29:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:26,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777015713] [2020-10-19 18:29:26,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169885943] [2020-10-19 18:29:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-19 18:29:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:26,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:26,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:26,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:26,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-10-19 18:29:26,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282882813] [2020-10-19 18:29:26,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:29:26,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:26,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:29:26,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:29:26,774 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-10-19 18:29:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:26,798 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-19 18:29:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:29:26,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:29:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:26,800 INFO L225 Difference]: With dead ends: 19 [2020-10-19 18:29:26,800 INFO L226 Difference]: Without dead ends: 18 [2020-10-19 18:29:26,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:29:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-19 18:29:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-19 18:29:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-19 18:29:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-19 18:29:26,806 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2020-10-19 18:29:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:26,806 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-19 18:29:26,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:29:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-19 18:29:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 18:29:26,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:26,808 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2020-10-19 18:29:27,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:27,019 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:27,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:27,019 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2020-10-19 18:29:27,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:27,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086882491] [2020-10-19 18:29:27,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:27,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086882491] [2020-10-19 18:29:27,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103075209] [2020-10-19 18:29:27,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-19 18:29:27,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:29:27,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:27,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:29:27,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:27,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:27,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-19 18:29:27,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035872879] [2020-10-19 18:29:27,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:29:27,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:27,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:29:27,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:29:27,152 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-10-19 18:29:27,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:27,184 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-19 18:29:27,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:29:27,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-19 18:29:27,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:27,186 INFO L225 Difference]: With dead ends: 22 [2020-10-19 18:29:27,186 INFO L226 Difference]: Without dead ends: 21 [2020-10-19 18:29:27,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:29:27,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-19 18:29:27,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-10-19 18:29:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-19 18:29:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-19 18:29:27,192 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2020-10-19 18:29:27,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:27,193 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-19 18:29:27,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:29:27,193 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-19 18:29:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:29:27,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:27,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2020-10-19 18:29:27,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:27,407 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:27,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:27,407 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2020-10-19 18:29:27,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:27,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448830915] [2020-10-19 18:29:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:27,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448830915] [2020-10-19 18:29:27,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619809800] [2020-10-19 18:29:27,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:27,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:29:27,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:27,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:29:27,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:27,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:27,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-19 18:29:27,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910620484] [2020-10-19 18:29:27,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:29:27,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:27,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:29:27,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:29:27,551 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2020-10-19 18:29:27,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:27,578 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-19 18:29:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:29:27,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-19 18:29:27,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:27,580 INFO L225 Difference]: With dead ends: 24 [2020-10-19 18:29:27,580 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 18:29:27,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:29:27,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 18:29:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-19 18:29:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 18:29:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-19 18:29:27,585 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2020-10-19 18:29:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:27,585 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-19 18:29:27,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:29:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-19 18:29:27,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:29:27,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:27,586 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2020-10-19 18:29:27,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:27,792 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:27,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:27,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2020-10-19 18:29:27,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:27,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831600301] [2020-10-19 18:29:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:27,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831600301] [2020-10-19 18:29:27,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316844793] [2020-10-19 18:29:27,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:27,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-19 18:29:27,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:27,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:29:27,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:27,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:27,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-19 18:29:27,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923527775] [2020-10-19 18:29:27,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:29:27,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:27,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:29:27,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:29:27,934 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-10-19 18:29:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:27,973 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-10-19 18:29:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:29:27,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-19 18:29:27,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:27,975 INFO L225 Difference]: With dead ends: 27 [2020-10-19 18:29:27,975 INFO L226 Difference]: Without dead ends: 26 [2020-10-19 18:29:27,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:29:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-19 18:29:27,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-19 18:29:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 18:29:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-19 18:29:27,982 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2020-10-19 18:29:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:27,982 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-19 18:29:27,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:29:27,983 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-19 18:29:27,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:29:27,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:27,984 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2020-10-19 18:29:28,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:28,196 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:28,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2020-10-19 18:29:28,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:28,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278775182] [2020-10-19 18:29:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:28,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278775182] [2020-10-19 18:29:28,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324206523] [2020-10-19 18:29:28,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:28,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-19 18:29:28,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:28,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:29:28,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:28,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:28,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-19 18:29:28,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824743448] [2020-10-19 18:29:28,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:29:28,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:28,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:29:28,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:29:28,331 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2020-10-19 18:29:28,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:28,353 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-19 18:29:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:29:28,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-19 18:29:28,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:28,354 INFO L225 Difference]: With dead ends: 29 [2020-10-19 18:29:28,354 INFO L226 Difference]: Without dead ends: 28 [2020-10-19 18:29:28,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:29:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-19 18:29:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-19 18:29:28,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 18:29:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-19 18:29:28,359 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2020-10-19 18:29:28,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:28,360 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-19 18:29:28,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:29:28,360 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-19 18:29:28,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:29:28,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:28,361 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2020-10-19 18:29:28,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:28,572 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:28,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:28,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2020-10-19 18:29:28,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:28,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598645288] [2020-10-19 18:29:28,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:28,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598645288] [2020-10-19 18:29:28,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579186265] [2020-10-19 18:29:28,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-19 18:29:28,657 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 18:29:28,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:28,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:29:28,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:28,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:28,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-19 18:29:28,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129088257] [2020-10-19 18:29:28,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:29:28,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:28,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:29:28,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:29:28,724 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2020-10-19 18:29:28,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:28,758 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-10-19 18:29:28,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:29:28,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-19 18:29:28,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:28,759 INFO L225 Difference]: With dead ends: 32 [2020-10-19 18:29:28,759 INFO L226 Difference]: Without dead ends: 31 [2020-10-19 18:29:28,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:29:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-19 18:29:28,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-19 18:29:28,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-19 18:29:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-10-19 18:29:28,765 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2020-10-19 18:29:28,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:28,765 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-10-19 18:29:28,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:29:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-10-19 18:29:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:29:28,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:28,766 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-10-19 18:29:28,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:28,977 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:28,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:28,978 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2020-10-19 18:29:28,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:28,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89307905] [2020-10-19 18:29:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:29,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89307905] [2020-10-19 18:29:29,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66157254] [2020-10-19 18:29:29,031 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:29,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 18:29:29,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:29,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:29:29,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:29,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:29,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-19 18:29:29,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301692657] [2020-10-19 18:29:29,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:29:29,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:29,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:29:29,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:29:29,113 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2020-10-19 18:29:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:29,151 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-10-19 18:29:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:29:29,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-19 18:29:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:29,152 INFO L225 Difference]: With dead ends: 34 [2020-10-19 18:29:29,153 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 18:29:29,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:29:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 18:29:29,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-19 18:29:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-19 18:29:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-10-19 18:29:29,158 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2020-10-19 18:29:29,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:29,159 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-10-19 18:29:29,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:29:29,159 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-10-19 18:29:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:29:29,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:29,160 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2020-10-19 18:29:29,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-19 18:29:29,361 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:29,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:29,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2020-10-19 18:29:29,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:29,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815868798] [2020-10-19 18:29:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:29,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815868798] [2020-10-19 18:29:29,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448749965] [2020-10-19 18:29:29,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-19 18:29:29,470 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-19 18:29:29,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:29,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:29:29,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:29,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:29,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-19 18:29:29,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909058033] [2020-10-19 18:29:29,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:29:29,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:29,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:29:29,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:29:29,560 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2020-10-19 18:29:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:29,602 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-10-19 18:29:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:29:29,603 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-19 18:29:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:29,604 INFO L225 Difference]: With dead ends: 37 [2020-10-19 18:29:29,604 INFO L226 Difference]: Without dead ends: 36 [2020-10-19 18:29:29,604 INFO L677 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 [2020-10-19 18:29:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-19 18:29:29,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-19 18:29:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 18:29:29,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-10-19 18:29:29,609 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2020-10-19 18:29:29,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:29,610 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-10-19 18:29:29,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:29:29,610 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-10-19 18:29:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:29:29,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:29,611 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2020-10-19 18:29:29,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:29,815 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:29,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:29,816 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2020-10-19 18:29:29,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:29,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898986652] [2020-10-19 18:29:29,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:29,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898986652] [2020-10-19 18:29:29,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212988978] [2020-10-19 18:29:29,884 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:29,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-19 18:29:29,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:29,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:29:29,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:29,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:29,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-19 18:29:29,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548729265] [2020-10-19 18:29:29,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:29:29,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:29,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:29:29,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:29:29,989 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2020-10-19 18:29:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:30,014 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-19 18:29:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:29:30,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-19 18:29:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:30,015 INFO L225 Difference]: With dead ends: 39 [2020-10-19 18:29:30,016 INFO L226 Difference]: Without dead ends: 38 [2020-10-19 18:29:30,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:29:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-19 18:29:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-19 18:29:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-19 18:29:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-10-19 18:29:30,021 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2020-10-19 18:29:30,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:30,021 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-10-19 18:29:30,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:29:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-10-19 18:29:30,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 18:29:30,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:30,023 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2020-10-19 18:29:30,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:30,235 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:30,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:30,236 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2020-10-19 18:29:30,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:30,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161486541] [2020-10-19 18:29:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:30,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161486541] [2020-10-19 18:29:30,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297330988] [2020-10-19 18:29:30,304 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:30,331 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-19 18:29:30,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:30,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:29:30,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:30,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:30,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-19 18:29:30,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531313455] [2020-10-19 18:29:30,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:29:30,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:30,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:29:30,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:29:30,421 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2020-10-19 18:29:30,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:30,478 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-10-19 18:29:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:29:30,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-10-19 18:29:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:30,482 INFO L225 Difference]: With dead ends: 42 [2020-10-19 18:29:30,482 INFO L226 Difference]: Without dead ends: 41 [2020-10-19 18:29:30,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:29:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-19 18:29:30,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-19 18:29:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-19 18:29:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-10-19 18:29:30,495 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2020-10-19 18:29:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:30,496 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-10-19 18:29:30,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:29:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-10-19 18:29:30,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:29:30,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:30,501 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2020-10-19 18:29:30,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-19 18:29:30,713 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:30,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:30,714 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2020-10-19 18:29:30,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:30,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113502515] [2020-10-19 18:29:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:30,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113502515] [2020-10-19 18:29:30,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644676935] [2020-10-19 18:29:30,806 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:30,830 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-19 18:29:30,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:30,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:29:30,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:30,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:30,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-19 18:29:30,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915999476] [2020-10-19 18:29:30,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:29:30,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:30,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:29:30,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:29:30,910 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2020-10-19 18:29:30,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:30,955 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-10-19 18:29:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:29:30,955 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-19 18:29:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:30,956 INFO L225 Difference]: With dead ends: 44 [2020-10-19 18:29:30,956 INFO L226 Difference]: Without dead ends: 43 [2020-10-19 18:29:30,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:29:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-19 18:29:30,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-19 18:29:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-19 18:29:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-10-19 18:29:30,962 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2020-10-19 18:29:30,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:30,962 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-10-19 18:29:30,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:29:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-10-19 18:29:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:29:30,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:30,964 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2020-10-19 18:29:31,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-19 18:29:31,165 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:31,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:31,165 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2020-10-19 18:29:31,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:31,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634075215] [2020-10-19 18:29:31,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:31,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634075215] [2020-10-19 18:29:31,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095542600] [2020-10-19 18:29:31,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:31,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:29:31,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:31,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:31,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-19 18:29:31,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439652900] [2020-10-19 18:29:31,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:29:31,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:29:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:29:31,392 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2020-10-19 18:29:31,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:31,437 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-10-19 18:29:31,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:29:31,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-19 18:29:31,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:31,438 INFO L225 Difference]: With dead ends: 47 [2020-10-19 18:29:31,438 INFO L226 Difference]: Without dead ends: 46 [2020-10-19 18:29:31,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:29:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-19 18:29:31,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-19 18:29:31,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-19 18:29:31,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-10-19 18:29:31,443 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2020-10-19 18:29:31,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:31,443 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-10-19 18:29:31,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:29:31,444 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-10-19 18:29:31,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-19 18:29:31,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:31,444 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2020-10-19 18:29:31,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-19 18:29:31,655 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:31,656 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2020-10-19 18:29:31,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:31,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373621703] [2020-10-19 18:29:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:31,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373621703] [2020-10-19 18:29:31,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661592242] [2020-10-19 18:29:31,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:31,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:29:31,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:31,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:31,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-19 18:29:31,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058991668] [2020-10-19 18:29:31,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:29:31,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:31,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:29:31,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:29:31,862 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2020-10-19 18:29:31,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:31,905 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-10-19 18:29:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:29:31,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-19 18:29:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:31,907 INFO L225 Difference]: With dead ends: 49 [2020-10-19 18:29:31,907 INFO L226 Difference]: Without dead ends: 48 [2020-10-19 18:29:31,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:29:31,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-19 18:29:31,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-19 18:29:31,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-19 18:29:31,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-10-19 18:29:31,912 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2020-10-19 18:29:31,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:31,912 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-10-19 18:29:31,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:29:31,912 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-10-19 18:29:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-19 18:29:31,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:31,913 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2020-10-19 18:29:32,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:32,122 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:32,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:32,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2020-10-19 18:29:32,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:32,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056719071] [2020-10-19 18:29:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:32,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056719071] [2020-10-19 18:29:32,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123317025] [2020-10-19 18:29:32,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:32,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:29:32,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:32,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 18:29:32,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:32,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:32,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-19 18:29:32,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886923913] [2020-10-19 18:29:32,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:29:32,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:32,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:29:32,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:29:32,335 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2020-10-19 18:29:32,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:32,389 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-10-19 18:29:32,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:29:32,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-19 18:29:32,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:32,390 INFO L225 Difference]: With dead ends: 52 [2020-10-19 18:29:32,390 INFO L226 Difference]: Without dead ends: 51 [2020-10-19 18:29:32,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:29:32,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-19 18:29:32,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-19 18:29:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-19 18:29:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-10-19 18:29:32,404 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2020-10-19 18:29:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:32,406 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-10-19 18:29:32,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:29:32,406 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-10-19 18:29:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 18:29:32,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:32,408 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2020-10-19 18:29:32,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:32,612 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:32,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:32,612 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2020-10-19 18:29:32,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:32,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448985808] [2020-10-19 18:29:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:32,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448985808] [2020-10-19 18:29:32,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878072390] [2020-10-19 18:29:32,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:32,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:29:32,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:32,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 18:29:32,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:32,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:32,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-19 18:29:32,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019279428] [2020-10-19 18:29:32,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:29:32,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:32,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:29:32,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:29:32,813 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2020-10-19 18:29:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:32,858 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-10-19 18:29:32,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:29:32,859 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-19 18:29:32,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:32,859 INFO L225 Difference]: With dead ends: 54 [2020-10-19 18:29:32,859 INFO L226 Difference]: Without dead ends: 53 [2020-10-19 18:29:32,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:29:32,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-19 18:29:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-19 18:29:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-19 18:29:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-10-19 18:29:32,864 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2020-10-19 18:29:32,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:32,864 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-10-19 18:29:32,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:29:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-10-19 18:29:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-19 18:29:32,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:32,865 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2020-10-19 18:29:33,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:33,067 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:33,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:33,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2020-10-19 18:29:33,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:33,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553306706] [2020-10-19 18:29:33,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:33,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553306706] [2020-10-19 18:29:33,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763847838] [2020-10-19 18:29:33,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:33,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-19 18:29:33,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:33,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:29:33,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:33,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:33,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-19 18:29:33,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999313444] [2020-10-19 18:29:33,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:29:33,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:33,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:29:33,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:29:33,324 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2020-10-19 18:29:33,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:33,375 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-10-19 18:29:33,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:29:33,376 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-19 18:29:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:33,377 INFO L225 Difference]: With dead ends: 57 [2020-10-19 18:29:33,377 INFO L226 Difference]: Without dead ends: 56 [2020-10-19 18:29:33,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:29:33,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-19 18:29:33,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-19 18:29:33,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-19 18:29:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-10-19 18:29:33,382 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2020-10-19 18:29:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:33,382 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-10-19 18:29:33,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:29:33,383 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-10-19 18:29:33,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-19 18:29:33,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:33,384 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2020-10-19 18:29:33,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-19 18:29:33,585 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:33,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:33,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2020-10-19 18:29:33,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:33,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932153435] [2020-10-19 18:29:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:33,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932153435] [2020-10-19 18:29:33,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98511382] [2020-10-19 18:29:33,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:33,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-19 18:29:33,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:33,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:29:33,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:33,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:33,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-19 18:29:33,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634959111] [2020-10-19 18:29:33,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:29:33,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:33,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:29:33,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:29:33,839 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2020-10-19 18:29:33,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:33,880 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-10-19 18:29:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:29:33,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-19 18:29:33,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:33,882 INFO L225 Difference]: With dead ends: 59 [2020-10-19 18:29:33,882 INFO L226 Difference]: Without dead ends: 58 [2020-10-19 18:29:33,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:29:33,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-19 18:29:33,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-19 18:29:33,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 18:29:33,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-10-19 18:29:33,892 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2020-10-19 18:29:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:33,893 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-10-19 18:29:33,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:29:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-10-19 18:29:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-19 18:29:33,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:33,896 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2020-10-19 18:29:34,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-19 18:29:34,097 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:34,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:34,098 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2020-10-19 18:29:34,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:34,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431289900] [2020-10-19 18:29:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:34,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431289900] [2020-10-19 18:29:34,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586473731] [2020-10-19 18:29:34,212 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:34,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 18:29:34,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:34,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:29:34,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:34,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:34,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-19 18:29:34,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988546572] [2020-10-19 18:29:34,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 18:29:34,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:34,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 18:29:34,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:29:34,406 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2020-10-19 18:29:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:34,469 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-10-19 18:29:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:29:34,470 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-19 18:29:34,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:34,471 INFO L225 Difference]: With dead ends: 62 [2020-10-19 18:29:34,471 INFO L226 Difference]: Without dead ends: 61 [2020-10-19 18:29:34,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:29:34,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-19 18:29:34,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-10-19 18:29:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-19 18:29:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2020-10-19 18:29:34,478 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2020-10-19 18:29:34,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:34,478 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2020-10-19 18:29:34,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 18:29:34,479 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2020-10-19 18:29:34,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-19 18:29:34,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:34,480 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2020-10-19 18:29:34,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-19 18:29:34,693 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:34,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:34,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2020-10-19 18:29:34,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:34,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548828638] [2020-10-19 18:29:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:34,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548828638] [2020-10-19 18:29:34,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299825529] [2020-10-19 18:29:34,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:34,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 18:29:34,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:34,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:29:34,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:34,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:34,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-19 18:29:34,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866073051] [2020-10-19 18:29:34,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 18:29:34,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:34,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 18:29:34,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:29:34,967 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2020-10-19 18:29:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:35,003 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-10-19 18:29:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:29:35,004 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-19 18:29:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:35,005 INFO L225 Difference]: With dead ends: 64 [2020-10-19 18:29:35,005 INFO L226 Difference]: Without dead ends: 63 [2020-10-19 18:29:35,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:29:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-19 18:29:35,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-10-19 18:29:35,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-19 18:29:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-10-19 18:29:35,008 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2020-10-19 18:29:35,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:35,009 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-10-19 18:29:35,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 18:29:35,009 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-10-19 18:29:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-19 18:29:35,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:35,010 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2020-10-19 18:29:35,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-19 18:29:35,220 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2020-10-19 18:29:35,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:35,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209865199] [2020-10-19 18:29:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:35,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209865199] [2020-10-19 18:29:35,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93160677] [2020-10-19 18:29:35,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:35,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-19 18:29:35,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:35,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 18:29:35,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:35,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:35,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-19 18:29:35,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538279990] [2020-10-19 18:29:35,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 18:29:35,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:35,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 18:29:35,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:29:35,570 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2020-10-19 18:29:35,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:35,642 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-10-19 18:29:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 18:29:35,642 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-19 18:29:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:35,643 INFO L225 Difference]: With dead ends: 67 [2020-10-19 18:29:35,644 INFO L226 Difference]: Without dead ends: 66 [2020-10-19 18:29:35,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:29:35,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-19 18:29:35,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-19 18:29:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-19 18:29:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2020-10-19 18:29:35,648 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2020-10-19 18:29:35,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:35,649 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2020-10-19 18:29:35,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 18:29:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2020-10-19 18:29:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-19 18:29:35,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:35,650 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2020-10-19 18:29:35,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-19 18:29:35,860 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:35,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:35,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2020-10-19 18:29:35,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:35,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939733623] [2020-10-19 18:29:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:36,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939733623] [2020-10-19 18:29:36,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059772470] [2020-10-19 18:29:36,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:36,064 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-19 18:29:36,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:36,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 18:29:36,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:36,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:36,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-19 18:29:36,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142858625] [2020-10-19 18:29:36,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 18:29:36,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:36,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 18:29:36,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:29:36,245 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2020-10-19 18:29:36,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:36,303 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2020-10-19 18:29:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 18:29:36,303 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-19 18:29:36,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:36,304 INFO L225 Difference]: With dead ends: 69 [2020-10-19 18:29:36,304 INFO L226 Difference]: Without dead ends: 68 [2020-10-19 18:29:36,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:29:36,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-19 18:29:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-19 18:29:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 18:29:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-10-19 18:29:36,308 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2020-10-19 18:29:36,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:36,308 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-10-19 18:29:36,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 18:29:36,309 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-10-19 18:29:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-19 18:29:36,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:36,309 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2020-10-19 18:29:36,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:36,512 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:36,513 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2020-10-19 18:29:36,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:36,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076373383] [2020-10-19 18:29:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:36,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076373383] [2020-10-19 18:29:36,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886149452] [2020-10-19 18:29:36,677 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:36,710 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-19 18:29:36,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:36,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 18:29:36,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:36,858 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:36,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:36,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-19 18:29:36,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075632186] [2020-10-19 18:29:36,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-19 18:29:36,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:36,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-19 18:29:36,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:29:36,862 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2020-10-19 18:29:36,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:36,920 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-10-19 18:29:36,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 18:29:36,921 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2020-10-19 18:29:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:36,922 INFO L225 Difference]: With dead ends: 72 [2020-10-19 18:29:36,922 INFO L226 Difference]: Without dead ends: 71 [2020-10-19 18:29:36,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:29:36,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-19 18:29:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-19 18:29:36,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 18:29:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2020-10-19 18:29:36,926 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2020-10-19 18:29:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:36,926 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2020-10-19 18:29:36,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-19 18:29:36,926 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2020-10-19 18:29:36,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-19 18:29:36,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:36,927 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2020-10-19 18:29:37,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-19 18:29:37,131 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:37,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:37,131 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2020-10-19 18:29:37,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:37,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434774021] [2020-10-19 18:29:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:37,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434774021] [2020-10-19 18:29:37,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074876038] [2020-10-19 18:29:37,264 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:37,299 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-19 18:29:37,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:37,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 18:29:37,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:37,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:37,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-19 18:29:37,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160899980] [2020-10-19 18:29:37,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-19 18:29:37,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:37,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-19 18:29:37,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:29:37,461 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2020-10-19 18:29:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:37,515 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2020-10-19 18:29:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 18:29:37,516 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-19 18:29:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:37,517 INFO L225 Difference]: With dead ends: 74 [2020-10-19 18:29:37,517 INFO L226 Difference]: Without dead ends: 73 [2020-10-19 18:29:37,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:29:37,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-19 18:29:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-19 18:29:37,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:29:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2020-10-19 18:29:37,521 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2020-10-19 18:29:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:37,522 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2020-10-19 18:29:37,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-19 18:29:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2020-10-19 18:29:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 18:29:37,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:37,524 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2020-10-19 18:29:37,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:37,725 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:37,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:37,725 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2020-10-19 18:29:37,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:37,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598235357] [2020-10-19 18:29:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:37,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598235357] [2020-10-19 18:29:37,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084928094] [2020-10-19 18:29:37,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:37,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 18:29:37,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:38,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:38,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-19 18:29:38,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987446681] [2020-10-19 18:29:38,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-19 18:29:38,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:38,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-19 18:29:38,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:29:38,132 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2020-10-19 18:29:38,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:38,212 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2020-10-19 18:29:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:29:38,213 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-19 18:29:38,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:38,213 INFO L225 Difference]: With dead ends: 77 [2020-10-19 18:29:38,214 INFO L226 Difference]: Without dead ends: 76 [2020-10-19 18:29:38,214 INFO L677 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 [2020-10-19 18:29:38,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-19 18:29:38,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-19 18:29:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-19 18:29:38,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2020-10-19 18:29:38,219 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2020-10-19 18:29:38,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:38,219 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2020-10-19 18:29:38,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-19 18:29:38,220 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2020-10-19 18:29:38,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-19 18:29:38,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:38,221 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2020-10-19 18:29:38,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-19 18:29:38,431 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:38,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2020-10-19 18:29:38,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:38,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541731261] [2020-10-19 18:29:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:38,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541731261] [2020-10-19 18:29:38,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488669740] [2020-10-19 18:29:38,588 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:38,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 18:29:38,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:38,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:38,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-19 18:29:38,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417413151] [2020-10-19 18:29:38,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-19 18:29:38,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:38,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-19 18:29:38,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:29:38,819 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2020-10-19 18:29:38,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:38,877 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-10-19 18:29:38,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:29:38,878 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-19 18:29:38,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:38,879 INFO L225 Difference]: With dead ends: 79 [2020-10-19 18:29:38,879 INFO L226 Difference]: Without dead ends: 78 [2020-10-19 18:29:38,880 INFO L677 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 [2020-10-19 18:29:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-19 18:29:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-19 18:29:38,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-19 18:29:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-10-19 18:29:38,885 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2020-10-19 18:29:38,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:38,886 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-10-19 18:29:38,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-19 18:29:38,886 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-10-19 18:29:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-19 18:29:38,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:38,888 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2020-10-19 18:29:39,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:39,100 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:39,101 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2020-10-19 18:29:39,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:39,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46558097] [2020-10-19 18:29:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:39,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46558097] [2020-10-19 18:29:39,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053904920] [2020-10-19 18:29:39,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:39,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:29:39,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:39,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 18:29:39,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:39,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:39,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-19 18:29:39,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215249] [2020-10-19 18:29:39,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-19 18:29:39,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:39,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-19 18:29:39,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-19 18:29:39,498 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2020-10-19 18:29:39,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:39,582 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2020-10-19 18:29:39,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-19 18:29:39,583 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-19 18:29:39,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:39,584 INFO L225 Difference]: With dead ends: 82 [2020-10-19 18:29:39,584 INFO L226 Difference]: Without dead ends: 81 [2020-10-19 18:29:39,584 INFO L677 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 [2020-10-19 18:29:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-19 18:29:39,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-19 18:29:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-19 18:29:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2020-10-19 18:29:39,588 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2020-10-19 18:29:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:39,588 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2020-10-19 18:29:39,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-19 18:29:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2020-10-19 18:29:39,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-19 18:29:39,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:39,590 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2020-10-19 18:29:39,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-19 18:29:39,791 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:39,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2020-10-19 18:29:39,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:39,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614408214] [2020-10-19 18:29:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:39,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614408214] [2020-10-19 18:29:39,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084309282] [2020-10-19 18:29:39,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:39,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:29:39,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:39,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-19 18:29:39,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:40,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:40,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-19 18:29:40,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017539035] [2020-10-19 18:29:40,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-19 18:29:40,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:40,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-19 18:29:40,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-19 18:29:40,211 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2020-10-19 18:29:40,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:40,267 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2020-10-19 18:29:40,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-19 18:29:40,268 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2020-10-19 18:29:40,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:40,269 INFO L225 Difference]: With dead ends: 84 [2020-10-19 18:29:40,269 INFO L226 Difference]: Without dead ends: 83 [2020-10-19 18:29:40,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-19 18:29:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-19 18:29:40,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-10-19 18:29:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-19 18:29:40,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2020-10-19 18:29:40,275 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2020-10-19 18:29:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:40,276 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2020-10-19 18:29:40,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-19 18:29:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2020-10-19 18:29:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-19 18:29:40,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:40,277 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2020-10-19 18:29:40,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:40,488 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:40,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:40,488 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2020-10-19 18:29:40,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:40,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89855055] [2020-10-19 18:29:40,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:40,661 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:40,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89855055] [2020-10-19 18:29:40,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126869776] [2020-10-19 18:29:40,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:40,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-10-19 18:29:40,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:40,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 18:29:40,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:40,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:40,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-19 18:29:40,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995137856] [2020-10-19 18:29:40,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-19 18:29:40,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:40,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-19 18:29:40,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:29:40,904 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2020-10-19 18:29:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:40,970 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-10-19 18:29:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-19 18:29:40,970 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-10-19 18:29:40,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:40,971 INFO L225 Difference]: With dead ends: 87 [2020-10-19 18:29:40,971 INFO L226 Difference]: Without dead ends: 86 [2020-10-19 18:29:40,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:29:40,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-19 18:29:40,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-19 18:29:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-19 18:29:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2020-10-19 18:29:40,976 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2020-10-19 18:29:40,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:40,976 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2020-10-19 18:29:40,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-19 18:29:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2020-10-19 18:29:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-19 18:29:40,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:40,977 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2020-10-19 18:29:41,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-19 18:29:41,186 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:41,187 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2020-10-19 18:29:41,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:41,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449072188] [2020-10-19 18:29:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:41,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449072188] [2020-10-19 18:29:41,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457116063] [2020-10-19 18:29:41,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:41,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-10-19 18:29:41,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:41,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 18:29:41,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:41,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:41,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-19 18:29:41,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076581120] [2020-10-19 18:29:41,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-19 18:29:41,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:41,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-19 18:29:41,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:29:41,720 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2020-10-19 18:29:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:41,800 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2020-10-19 18:29:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-19 18:29:41,801 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-19 18:29:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:41,802 INFO L225 Difference]: With dead ends: 89 [2020-10-19 18:29:41,802 INFO L226 Difference]: Without dead ends: 88 [2020-10-19 18:29:41,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:29:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-19 18:29:41,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-19 18:29:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-19 18:29:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2020-10-19 18:29:41,810 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2020-10-19 18:29:41,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:41,811 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2020-10-19 18:29:41,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-19 18:29:41,811 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2020-10-19 18:29:41,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-19 18:29:41,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:41,813 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2020-10-19 18:29:42,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:42,028 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:42,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2020-10-19 18:29:42,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:42,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767894053] [2020-10-19 18:29:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:42,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767894053] [2020-10-19 18:29:42,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821732903] [2020-10-19 18:29:42,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:42,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 18:29:42,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:42,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 18:29:42,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:42,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:42,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-19 18:29:42,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041669369] [2020-10-19 18:29:42,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-19 18:29:42,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:42,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-19 18:29:42,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:29:42,542 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2020-10-19 18:29:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:42,626 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2020-10-19 18:29:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-19 18:29:42,626 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2020-10-19 18:29:42,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:42,627 INFO L225 Difference]: With dead ends: 92 [2020-10-19 18:29:42,627 INFO L226 Difference]: Without dead ends: 91 [2020-10-19 18:29:42,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:29:42,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-19 18:29:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-19 18:29:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-19 18:29:42,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2020-10-19 18:29:42,631 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2020-10-19 18:29:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:42,632 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2020-10-19 18:29:42,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-19 18:29:42,632 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2020-10-19 18:29:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-19 18:29:42,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:42,633 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2020-10-19 18:29:42,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-19 18:29:42,842 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:42,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:42,842 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2020-10-19 18:29:42,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:42,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154988326] [2020-10-19 18:29:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:43,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154988326] [2020-10-19 18:29:43,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435238594] [2020-10-19 18:29:43,035 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:43,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 18:29:43,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:43,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 18:29:43,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:43,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:43,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-19 18:29:43,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856544825] [2020-10-19 18:29:43,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-19 18:29:43,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:43,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-19 18:29:43,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:29:43,367 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2020-10-19 18:29:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:43,416 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2020-10-19 18:29:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-19 18:29:43,417 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2020-10-19 18:29:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:43,418 INFO L225 Difference]: With dead ends: 94 [2020-10-19 18:29:43,418 INFO L226 Difference]: Without dead ends: 93 [2020-10-19 18:29:43,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:29:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-19 18:29:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-19 18:29:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-19 18:29:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2020-10-19 18:29:43,423 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2020-10-19 18:29:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:43,423 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2020-10-19 18:29:43,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-19 18:29:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2020-10-19 18:29:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-19 18:29:43,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:43,425 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2020-10-19 18:29:43,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-19 18:29:43,634 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:43,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:43,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2020-10-19 18:29:43,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:43,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004440412] [2020-10-19 18:29:43,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:43,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004440412] [2020-10-19 18:29:43,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895808606] [2020-10-19 18:29:43,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:43,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-10-19 18:29:43,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:43,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-19 18:29:43,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:44,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:44,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-19 18:29:44,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581461044] [2020-10-19 18:29:44,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-19 18:29:44,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:44,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-19 18:29:44,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-19 18:29:44,167 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2020-10-19 18:29:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:44,265 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2020-10-19 18:29:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-19 18:29:44,266 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2020-10-19 18:29:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:44,267 INFO L225 Difference]: With dead ends: 97 [2020-10-19 18:29:44,267 INFO L226 Difference]: Without dead ends: 96 [2020-10-19 18:29:44,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-19 18:29:44,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-19 18:29:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-19 18:29:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 18:29:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-10-19 18:29:44,271 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2020-10-19 18:29:44,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:44,272 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-10-19 18:29:44,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-19 18:29:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-10-19 18:29:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-19 18:29:44,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:44,273 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2020-10-19 18:29:44,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-19 18:29:44,483 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:44,483 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2020-10-19 18:29:44,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:44,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669407386] [2020-10-19 18:29:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:44,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669407386] [2020-10-19 18:29:44,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720381658] [2020-10-19 18:29:44,735 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:44,806 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-10-19 18:29:44,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:44,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-19 18:29:44,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:45,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:45,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-19 18:29:45,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885281501] [2020-10-19 18:29:45,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-19 18:29:45,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:45,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-19 18:29:45,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-19 18:29:45,139 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2020-10-19 18:29:45,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:45,205 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-10-19 18:29:45,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-19 18:29:45,206 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2020-10-19 18:29:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:45,208 INFO L225 Difference]: With dead ends: 99 [2020-10-19 18:29:45,208 INFO L226 Difference]: Without dead ends: 98 [2020-10-19 18:29:45,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-19 18:29:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-19 18:29:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-19 18:29:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-19 18:29:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-10-19 18:29:45,213 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2020-10-19 18:29:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:45,214 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-10-19 18:29:45,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-19 18:29:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-10-19 18:29:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-19 18:29:45,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:45,215 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2020-10-19 18:29:45,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-19 18:29:45,427 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:45,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:45,427 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2020-10-19 18:29:45,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:45,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821450866] [2020-10-19 18:29:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:45,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821450866] [2020-10-19 18:29:45,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339529140] [2020-10-19 18:29:45,648 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:45,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-10-19 18:29:45,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:45,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 18:29:45,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:45,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:45,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-19 18:29:45,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012697890] [2020-10-19 18:29:45,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-19 18:29:45,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:45,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-19 18:29:45,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:29:45,984 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2020-10-19 18:29:46,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:46,084 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2020-10-19 18:29:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-19 18:29:46,085 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2020-10-19 18:29:46,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:46,086 INFO L225 Difference]: With dead ends: 102 [2020-10-19 18:29:46,086 INFO L226 Difference]: Without dead ends: 101 [2020-10-19 18:29:46,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:29:46,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-19 18:29:46,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-10-19 18:29:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-19 18:29:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2020-10-19 18:29:46,091 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2020-10-19 18:29:46,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:46,091 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2020-10-19 18:29:46,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-19 18:29:46,091 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2020-10-19 18:29:46,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-19 18:29:46,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:46,092 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2020-10-19 18:29:46,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-19 18:29:46,293 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:46,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:46,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2020-10-19 18:29:46,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:46,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637481501] [2020-10-19 18:29:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:46,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637481501] [2020-10-19 18:29:46,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785831872] [2020-10-19 18:29:46,536 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:46,579 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-10-19 18:29:46,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:29:46,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 18:29:46,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:46,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:46,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-19 18:29:46,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273552022] [2020-10-19 18:29:46,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-19 18:29:46,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:46,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-19 18:29:46,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:29:46,907 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2020-10-19 18:29:46,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:46,972 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2020-10-19 18:29:46,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-19 18:29:46,973 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2020-10-19 18:29:46,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:46,974 INFO L225 Difference]: With dead ends: 104 [2020-10-19 18:29:46,974 INFO L226 Difference]: Without dead ends: 103 [2020-10-19 18:29:46,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:29:46,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-19 18:29:46,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-10-19 18:29:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-19 18:29:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2020-10-19 18:29:46,979 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2020-10-19 18:29:46,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:46,979 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2020-10-19 18:29:46,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-19 18:29:46,979 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2020-10-19 18:29:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 18:29:46,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:46,981 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2020-10-19 18:29:47,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-19 18:29:47,181 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:47,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:47,182 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2020-10-19 18:29:47,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:47,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912711061] [2020-10-19 18:29:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:47,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912711061] [2020-10-19 18:29:47,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544878846] [2020-10-19 18:29:47,446 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:29:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:29:47,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 18:29:47,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:29:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:29:47,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:29:47,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-19 18:29:47,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653596709] [2020-10-19 18:29:47,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-19 18:29:47,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:29:47,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-19 18:29:47,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-19 18:29:47,794 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2020-10-19 18:29:47,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:29:47,883 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2020-10-19 18:29:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-19 18:29:47,883 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2020-10-19 18:29:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:29:47,884 INFO L225 Difference]: With dead ends: 107 [2020-10-19 18:29:47,884 INFO L226 Difference]: Without dead ends: 106 [2020-10-19 18:29:47,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-19 18:29:47,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-19 18:29:47,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-19 18:29:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-19 18:29:47,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2020-10-19 18:29:47,889 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2020-10-19 18:29:47,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:29:47,889 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2020-10-19 18:29:47,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-19 18:29:47,890 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2020-10-19 18:29:47,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-19 18:29:47,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:29:47,891 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2020-10-19 18:29:48,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-10-19 18:29:48,101 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:29:48,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:29:48,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2020-10-19 18:29:48,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:29:48,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783158857] [2020-10-19 18:29:48,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:29:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:29:48,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:29:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:29:48,144 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:29:48,163 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:29:48,163 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:29:48,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-19 18:29:48,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:29:48 BoogieIcfgContainer [2020-10-19 18:29:48,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:29:48,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:29:48,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:29:48,229 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:29:48,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:29:25" (3/4) ... [2020-10-19 18:29:48,233 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:29:48,360 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:29:48,361 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:29:48,364 INFO L168 Benchmark]: Toolchain (without parser) took 23360.66 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 333.4 MB). Free memory was 954.6 MB in the beginning and 827.3 MB in the end (delta: 127.3 MB). Peak memory consumption was 460.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:48,365 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:29:48,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.39 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:48,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.77 ms. Allocated memory is still 1.0 GB. Free memory is still 943.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:29:48,366 INFO L168 Benchmark]: Boogie Preprocessor took 87.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -170.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:48,367 INFO L168 Benchmark]: RCFGBuilder took 216.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:48,367 INFO L168 Benchmark]: TraceAbstraction took 22600.63 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 215.0 MB). Free memory was 1.1 GB in the beginning and 837.0 MB in the end (delta: 259.8 MB). Peak memory consumption was 474.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:48,368 INFO L168 Benchmark]: Witness Printer took 132.30 ms. Allocated memory is still 1.4 GB. Free memory was 837.0 MB in the beginning and 827.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:29:48,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.39 ms. Allocated memory is still 1.0 GB. Free memory was 954.6 MB in the beginning and 943.9 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 37.77 ms. Allocated memory is still 1.0 GB. Free memory is still 943.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 87.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -170.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 216.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 22600.63 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 215.0 MB). Free memory was 1.1 GB in the beginning and 837.0 MB in the end (delta: 259.8 MB). Peak memory consumption was 474.8 MB. Max. memory is 11.5 GB. * Witness Printer took 132.30 ms. Allocated memory is still 1.4 GB. Free memory was 837.0 MB in the beginning and 827.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] 3*y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.4s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1318 SDs, 0 SdLazy, 1445 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 41 MinimizatonAttempts, 39 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 4022 NumberOfCodeBlocks, 4022 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 3844 ConstructedInterpolants, 0 QuantifiedInterpolants, 753036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3617 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 0/23218 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...