./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC --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 ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:30:57,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:30:57,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:30:57,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:30:57,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:30:57,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:30:57,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:30:57,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:30:57,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:30:57,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:30:57,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:30:57,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:30:57,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:30:57,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:30:57,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:30:57,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:30:57,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:30:57,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:30:57,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:30:57,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:30:57,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:30:57,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:30:57,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:30:57,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:30:57,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:30:57,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:30:57,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:30:57,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:30:57,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:30:57,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:30:57,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:30:57,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:30:57,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:30:57,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:30:57,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:30:57,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:30:57,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:30:57,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:30:57,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:30:57,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:30:57,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:30:57,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-11 00:30:57,716 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:30:57,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:30:57,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:30:57,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:30:57,722 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:30:57,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:30:57,723 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:30:57,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:30:57,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:30:57,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:30:57,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:30:57,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:30:57,732 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:30:57,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:30:57,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:30:57,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:30:57,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:30:57,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:30:57,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:30:57,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:30:57,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:30:57,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:30:57,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:30:57,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:30:57,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:30:57,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:30:57,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:30:57,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d [2021-10-11 00:30:58,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:30:58,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:30:58,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:30:58,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:30:58,100 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:30:58,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2021-10-11 00:30:58,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/data/e8ab0ab41/3a1794f782a548349bb3e958d26acb93/FLAG12c74da6b [2021-10-11 00:30:58,616 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:30:58,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2021-10-11 00:30:58,631 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/data/e8ab0ab41/3a1794f782a548349bb3e958d26acb93/FLAG12c74da6b [2021-10-11 00:30:58,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/data/e8ab0ab41/3a1794f782a548349bb3e958d26acb93 [2021-10-11 00:30:58,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:30:58,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:30:58,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:30:58,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:30:59,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:30:59,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:30:58" (1/1) ... [2021-10-11 00:30:59,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fab1e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59, skipping insertion in model container [2021-10-11 00:30:59,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:30:58" (1/1) ... [2021-10-11 00:30:59,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:30:59,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:30:59,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:30:59,192 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:30:59,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:30:59,221 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:30:59,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59 WrapperNode [2021-10-11 00:30:59,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:30:59,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:30:59,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:30:59,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:30:59,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59" (1/1) ... [2021-10-11 00:30:59,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59" (1/1) ... [2021-10-11 00:30:59,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:30:59,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:30:59,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:30:59,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:30:59,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59" (1/1) ... [2021-10-11 00:30:59,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59" (1/1) ... [2021-10-11 00:30:59,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59" (1/1) ... [2021-10-11 00:30:59,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59" (1/1) ... [2021-10-11 00:30:59,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59" (1/1) ... [2021-10-11 00:30:59,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59" (1/1) ... [2021-10-11 00:30:59,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59" (1/1) ... [2021-10-11 00:30:59,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:30:59,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:30:59,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:30:59,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:30:59,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:30:59,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:30:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:30:59,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:30:59,733 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 00:30:59,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:59 BoogieIcfgContainer [2021-10-11 00:30:59,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:30:59,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:30:59,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:30:59,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:30:59,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:30:58" (1/3) ... [2021-10-11 00:30:59,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5278ddbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:30:59, skipping insertion in model container [2021-10-11 00:30:59,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:30:59" (2/3) ... [2021-10-11 00:30:59,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5278ddbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:30:59, skipping insertion in model container [2021-10-11 00:30:59,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:59" (3/3) ... [2021-10-11 00:30:59,745 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2021-10-11 00:30:59,760 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:30:59,764 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-10-11 00:30:59,776 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-11 00:30:59,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:30:59,800 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:30:59,800 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:30:59,801 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:30:59,801 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:30:59,801 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:30:59,801 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:30:59,802 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:30:59,816 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2021-10-11 00:30:59,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:30:59,821 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:59,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:30:59,823 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:30:59,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:59,829 INFO L82 PathProgramCache]: Analyzing trace with hash 29685899, now seen corresponding path program 1 times [2021-10-11 00:30:59,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:59,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160652931] [2021-10-11 00:30:59,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:00,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160652931] [2021-10-11 00:31:00,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:00,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:00,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586650119] [2021-10-11 00:31:00,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:31:00,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:00,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:31:00,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:31:00,067 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2021-10-11 00:31:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:00,088 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2021-10-11 00:31:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:31:00,089 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-10-11 00:31:00,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:00,098 INFO L225 Difference]: With dead ends: 50 [2021-10-11 00:31:00,098 INFO L226 Difference]: Without dead ends: 22 [2021-10-11 00:31:00,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:31:00,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-11 00:31:00,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-11 00:31:00,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 00:31:00,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-10-11 00:31:00,152 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 5 [2021-10-11 00:31:00,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:00,152 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-11 00:31:00,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:31:00,152 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-10-11 00:31:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:31:00,153 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:00,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:31:00,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:31:00,154 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:00,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:00,155 INFO L82 PathProgramCache]: Analyzing trace with hash 29685000, now seen corresponding path program 1 times [2021-10-11 00:31:00,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:00,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177703815] [2021-10-11 00:31:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:00,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177703815] [2021-10-11 00:31:00,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:00,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:00,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177173579] [2021-10-11 00:31:00,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:31:00,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:00,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:31:00,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:00,215 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2021-10-11 00:31:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:00,257 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-10-11 00:31:00,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:31:00,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 00:31:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:00,264 INFO L225 Difference]: With dead ends: 41 [2021-10-11 00:31:00,264 INFO L226 Difference]: Without dead ends: 40 [2021-10-11 00:31:00,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:00,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-11 00:31:00,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 25. [2021-10-11 00:31:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 00:31:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-10-11 00:31:00,272 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2021-10-11 00:31:00,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:00,272 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-11 00:31:00,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:31:00,273 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-10-11 00:31:00,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 00:31:00,273 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:00,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 00:31:00,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:31:00,274 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:00,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:00,275 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2021-10-11 00:31:00,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:00,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628426863] [2021-10-11 00:31:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:00,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628426863] [2021-10-11 00:31:00,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:00,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:00,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915851989] [2021-10-11 00:31:00,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:31:00,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:00,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:31:00,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:00,349 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2021-10-11 00:31:00,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:00,395 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-10-11 00:31:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:31:00,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 00:31:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:00,397 INFO L225 Difference]: With dead ends: 34 [2021-10-11 00:31:00,397 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 00:31:00,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:00,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 00:31:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2021-10-11 00:31:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-10-11 00:31:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-11 00:31:00,404 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 5 [2021-10-11 00:31:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:00,405 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-11 00:31:00,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:31:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-10-11 00:31:00,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:31:00,406 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:00,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:31:00,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:31:00,407 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:00,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:00,408 INFO L82 PathProgramCache]: Analyzing trace with hash 920235084, now seen corresponding path program 1 times [2021-10-11 00:31:00,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:00,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635284498] [2021-10-11 00:31:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:00,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635284498] [2021-10-11 00:31:00,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:00,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:00,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397901731] [2021-10-11 00:31:00,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:31:00,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:00,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:31:00,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:00,439 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2021-10-11 00:31:00,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:00,489 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-10-11 00:31:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:31:00,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 00:31:00,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:00,493 INFO L225 Difference]: With dead ends: 45 [2021-10-11 00:31:00,494 INFO L226 Difference]: Without dead ends: 44 [2021-10-11 00:31:00,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:00,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-11 00:31:00,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-10-11 00:31:00,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 00:31:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-10-11 00:31:00,512 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 6 [2021-10-11 00:31:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:00,513 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-10-11 00:31:00,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:31:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2021-10-11 00:31:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 00:31:00,514 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:00,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 00:31:00,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:31:00,516 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:00,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:00,517 INFO L82 PathProgramCache]: Analyzing trace with hash 920236110, now seen corresponding path program 1 times [2021-10-11 00:31:00,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:00,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180830567] [2021-10-11 00:31:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:00,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180830567] [2021-10-11 00:31:00,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:00,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:00,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124872696] [2021-10-11 00:31:00,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:31:00,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:00,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:31:00,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:00,584 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 3 states. [2021-10-11 00:31:00,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:00,612 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-10-11 00:31:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:31:00,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 00:31:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:00,615 INFO L225 Difference]: With dead ends: 31 [2021-10-11 00:31:00,616 INFO L226 Difference]: Without dead ends: 30 [2021-10-11 00:31:00,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-11 00:31:00,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-11 00:31:00,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 00:31:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-10-11 00:31:00,622 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 6 [2021-10-11 00:31:00,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:00,623 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-10-11 00:31:00,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:31:00,623 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-10-11 00:31:00,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 00:31:00,624 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:00,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:00,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:31:00,625 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:00,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:00,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1537451600, now seen corresponding path program 1 times [2021-10-11 00:31:00,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:00,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59203365] [2021-10-11 00:31:00,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:00,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59203365] [2021-10-11 00:31:00,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:00,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 00:31:00,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302512859] [2021-10-11 00:31:00,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:31:00,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:00,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:31:00,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:00,655 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2021-10-11 00:31:00,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:00,671 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-10-11 00:31:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:31:00,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 00:31:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:00,675 INFO L225 Difference]: With dead ends: 30 [2021-10-11 00:31:00,677 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 00:31:00,677 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 [2021-10-11 00:31:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 00:31:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 00:31:00,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 00:31:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-10-11 00:31:00,688 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 7 [2021-10-11 00:31:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:00,689 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-11 00:31:00,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:31:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-10-11 00:31:00,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:31:00,694 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:00,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:00,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:31:00,696 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:00,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:00,704 INFO L82 PathProgramCache]: Analyzing trace with hash -416359280, now seen corresponding path program 1 times [2021-10-11 00:31:00,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:00,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884120882] [2021-10-11 00:31:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:00,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884120882] [2021-10-11 00:31:00,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:00,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:00,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951639170] [2021-10-11 00:31:00,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:31:00,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:00,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:31:00,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:00,750 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 3 states. [2021-10-11 00:31:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:00,772 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-10-11 00:31:00,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:31:00,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 00:31:00,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:00,774 INFO L225 Difference]: With dead ends: 29 [2021-10-11 00:31:00,775 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 00:31:00,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:00,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 00:31:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-11 00:31:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 00:31:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-10-11 00:31:00,792 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 8 [2021-10-11 00:31:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:00,792 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-10-11 00:31:00,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:31:00,793 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-10-11 00:31:00,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:31:00,794 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:00,794 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-11 00:31:00,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:31:00,795 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:00,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:00,795 INFO L82 PathProgramCache]: Analyzing trace with hash -52819969, now seen corresponding path program 1 times [2021-10-11 00:31:00,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:00,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423872651] [2021-10-11 00:31:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:00,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423872651] [2021-10-11 00:31:00,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808250279] [2021-10-11 00:31:00,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:31:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:00,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:31:00,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:01,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:01,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-11 00:31:01,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453131635] [2021-10-11 00:31:01,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:31:01,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:01,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:31:01,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:31:01,016 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2021-10-11 00:31:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:01,078 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-10-11 00:31:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:31:01,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 00:31:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:01,080 INFO L225 Difference]: With dead ends: 54 [2021-10-11 00:31:01,080 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 00:31:01,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:31:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 00:31:01,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2021-10-11 00:31:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-11 00:31:01,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2021-10-11 00:31:01,099 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 9 [2021-10-11 00:31:01,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:01,099 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2021-10-11 00:31:01,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:31:01,099 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2021-10-11 00:31:01,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:31:01,100 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:01,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:01,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-11 00:31:01,301 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:01,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:01,301 INFO L82 PathProgramCache]: Analyzing trace with hash -689307342, now seen corresponding path program 1 times [2021-10-11 00:31:01,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:01,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331059098] [2021-10-11 00:31:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:01,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331059098] [2021-10-11 00:31:01,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:01,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:31:01,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837770322] [2021-10-11 00:31:01,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:31:01,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:01,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:31:01,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:31:01,335 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 4 states. [2021-10-11 00:31:01,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:01,447 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2021-10-11 00:31:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:31:01,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 00:31:01,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:01,448 INFO L225 Difference]: With dead ends: 64 [2021-10-11 00:31:01,449 INFO L226 Difference]: Without dead ends: 62 [2021-10-11 00:31:01,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:31:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-11 00:31:01,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2021-10-11 00:31:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-11 00:31:01,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2021-10-11 00:31:01,459 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 10 [2021-10-11 00:31:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:01,459 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2021-10-11 00:31:01,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:31:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2021-10-11 00:31:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:31:01,460 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:01,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:01,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 00:31:01,461 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:01,462 INFO L82 PathProgramCache]: Analyzing trace with hash 106308951, now seen corresponding path program 1 times [2021-10-11 00:31:01,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:01,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851125681] [2021-10-11 00:31:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:01,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851125681] [2021-10-11 00:31:01,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:01,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:31:01,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501773478] [2021-10-11 00:31:01,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:31:01,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:01,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:31:01,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:31:01,493 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 4 states. [2021-10-11 00:31:01,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:01,542 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-10-11 00:31:01,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:31:01,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 00:31:01,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:01,543 INFO L225 Difference]: With dead ends: 46 [2021-10-11 00:31:01,544 INFO L226 Difference]: Without dead ends: 44 [2021-10-11 00:31:01,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:31:01,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-11 00:31:01,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2021-10-11 00:31:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 00:31:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2021-10-11 00:31:01,551 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 11 [2021-10-11 00:31:01,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:01,551 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2021-10-11 00:31:01,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:31:01,551 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2021-10-11 00:31:01,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:31:01,552 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:01,552 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:01,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 00:31:01,552 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:01,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:01,553 INFO L82 PathProgramCache]: Analyzing trace with hash -999444228, now seen corresponding path program 1 times [2021-10-11 00:31:01,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:01,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568942966] [2021-10-11 00:31:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:01,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568942966] [2021-10-11 00:31:01,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942515966] [2021-10-11 00:31:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:01,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 00:31:01,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:01,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:01,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-11 00:31:01,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504173831] [2021-10-11 00:31:01,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:31:01,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:01,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:31:01,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:31:01,641 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 4 states. [2021-10-11 00:31:01,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:01,676 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2021-10-11 00:31:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:31:01,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 00:31:01,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:01,678 INFO L225 Difference]: With dead ends: 66 [2021-10-11 00:31:01,678 INFO L226 Difference]: Without dead ends: 65 [2021-10-11 00:31:01,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:31:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-11 00:31:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2021-10-11 00:31:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-10-11 00:31:01,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2021-10-11 00:31:01,687 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 12 [2021-10-11 00:31:01,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:01,688 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2021-10-11 00:31:01,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:31:01,688 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2021-10-11 00:31:01,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:31:01,689 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:01,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2021-10-11 00:31:01,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:01,910 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:01,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:01,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1890502518, now seen corresponding path program 2 times [2021-10-11 00:31:01,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:01,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340811927] [2021-10-11 00:31:01,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 00:31:01,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340811927] [2021-10-11 00:31:01,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997552352] [2021-10-11 00:31:01,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:31:02,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 00:31:02,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:02,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:31:02,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 00:31:02,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:02,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-11 00:31:02,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651505422] [2021-10-11 00:31:02,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:31:02,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:02,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:31:02,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:31:02,074 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 4 states. [2021-10-11 00:31:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:02,118 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2021-10-11 00:31:02,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:31:02,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 00:31:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:02,122 INFO L225 Difference]: With dead ends: 56 [2021-10-11 00:31:02,122 INFO L226 Difference]: Without dead ends: 55 [2021-10-11 00:31:02,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:31:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-11 00:31:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2021-10-11 00:31:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-10-11 00:31:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2021-10-11 00:31:02,130 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 13 [2021-10-11 00:31:02,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:02,130 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2021-10-11 00:31:02,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:31:02,131 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2021-10-11 00:31:02,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:31:02,131 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:02,131 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:02,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 00:31:02,332 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:02,333 INFO L82 PathProgramCache]: Analyzing trace with hash -575852389, now seen corresponding path program 1 times [2021-10-11 00:31:02,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:02,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58086280] [2021-10-11 00:31:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:31:02,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58086280] [2021-10-11 00:31:02,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:02,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:31:02,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132569285] [2021-10-11 00:31:02,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:31:02,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:02,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:31:02,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:31:02,382 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 4 states. [2021-10-11 00:31:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:02,422 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2021-10-11 00:31:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:31:02,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2021-10-11 00:31:02,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:02,428 INFO L225 Difference]: With dead ends: 48 [2021-10-11 00:31:02,428 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 00:31:02,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:31:02,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 00:31:02,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-10-11 00:31:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-10-11 00:31:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2021-10-11 00:31:02,440 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 14 [2021-10-11 00:31:02,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:02,441 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2021-10-11 00:31:02,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:31:02,441 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2021-10-11 00:31:02,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:31:02,442 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:02,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:02,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 00:31:02,442 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:02,443 INFO L82 PathProgramCache]: Analyzing trace with hash 656583171, now seen corresponding path program 1 times [2021-10-11 00:31:02,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:02,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386228205] [2021-10-11 00:31:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:02,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386228205] [2021-10-11 00:31:02,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977382646] [2021-10-11 00:31:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:31:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:02,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:31:02,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:02,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:02,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-11 00:31:02,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071501498] [2021-10-11 00:31:02,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:31:02,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:02,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:31:02,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:31:02,578 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 6 states. [2021-10-11 00:31:02,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:02,668 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2021-10-11 00:31:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:31:02,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-10-11 00:31:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:02,669 INFO L225 Difference]: With dead ends: 78 [2021-10-11 00:31:02,670 INFO L226 Difference]: Without dead ends: 45 [2021-10-11 00:31:02,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:31:02,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-11 00:31:02,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-11 00:31:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-10-11 00:31:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-10-11 00:31:02,695 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 16 [2021-10-11 00:31:02,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:02,696 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-10-11 00:31:02,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:31:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-10-11 00:31:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:31:02,697 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:02,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:02,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:02,898 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:02,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:02,898 INFO L82 PathProgramCache]: Analyzing trace with hash 471235363, now seen corresponding path program 1 times [2021-10-11 00:31:02,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:02,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262963694] [2021-10-11 00:31:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:02,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262963694] [2021-10-11 00:31:02,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515215160] [2021-10-11 00:31:02,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-11 00:31:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:02,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:31:02,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:03,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:03,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-11 00:31:03,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886572117] [2021-10-11 00:31:03,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:31:03,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:03,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:31:03,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:31:03,044 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2021-10-11 00:31:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:03,190 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2021-10-11 00:31:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:31:03,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-10-11 00:31:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:03,192 INFO L225 Difference]: With dead ends: 116 [2021-10-11 00:31:03,192 INFO L226 Difference]: Without dead ends: 115 [2021-10-11 00:31:03,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:31:03,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-11 00:31:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 68. [2021-10-11 00:31:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-10-11 00:31:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2021-10-11 00:31:03,201 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 17 [2021-10-11 00:31:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:03,202 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2021-10-11 00:31:03,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:31:03,202 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2021-10-11 00:31:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:31:03,203 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:03,203 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-11 00:31:03,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-11 00:31:03,428 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:03,429 INFO L82 PathProgramCache]: Analyzing trace with hash -415013654, now seen corresponding path program 2 times [2021-10-11 00:31:03,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:03,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398145938] [2021-10-11 00:31:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 00:31:03,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398145938] [2021-10-11 00:31:03,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716439853] [2021-10-11 00:31:03,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:31:03,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-11 00:31:03,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:31:03,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:31:03,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 00:31:03,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:03,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-11 00:31:03,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61743175] [2021-10-11 00:31:03,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:31:03,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:03,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:31:03,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:31:03,555 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 4 states. [2021-10-11 00:31:03,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:03,589 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2021-10-11 00:31:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:31:03,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-10-11 00:31:03,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:03,591 INFO L225 Difference]: With dead ends: 68 [2021-10-11 00:31:03,591 INFO L226 Difference]: Without dead ends: 67 [2021-10-11 00:31:03,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:31:03,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-11 00:31:03,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 39. [2021-10-11 00:31:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 00:31:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2021-10-11 00:31:03,609 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 19 [2021-10-11 00:31:03,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:03,609 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2021-10-11 00:31:03,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:31:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2021-10-11 00:31:03,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:31:03,610 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:03,610 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:03,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:03,825 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:03,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:03,825 INFO L82 PathProgramCache]: Analyzing trace with hash 2095953530, now seen corresponding path program 2 times [2021-10-11 00:31:03,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:03,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407303409] [2021-10-11 00:31:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:03,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407303409] [2021-10-11 00:31:03,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386628954] [2021-10-11 00:31:03,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:03,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:31:03,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:31:03,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:31:03,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:03,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:03,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-11 00:31:03,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527608908] [2021-10-11 00:31:03,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 00:31:03,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:03,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 00:31:03,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:31:03,959 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2021-10-11 00:31:04,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:04,134 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2021-10-11 00:31:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:31:04,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-10-11 00:31:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:04,137 INFO L225 Difference]: With dead ends: 92 [2021-10-11 00:31:04,137 INFO L226 Difference]: Without dead ends: 91 [2021-10-11 00:31:04,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-11 00:31:04,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-11 00:31:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 44. [2021-10-11 00:31:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-10-11 00:31:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-10-11 00:31:04,144 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 22 [2021-10-11 00:31:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:04,144 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-10-11 00:31:04,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 00:31:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-10-11 00:31:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-11 00:31:04,145 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:04,146 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:04,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-11 00:31:04,369 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:04,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:04,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1289288067, now seen corresponding path program 3 times [2021-10-11 00:31:04,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:04,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76944470] [2021-10-11 00:31:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:31:04,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76944470] [2021-10-11 00:31:04,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934101575] [2021-10-11 00:31:04,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:31:04,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-11 00:31:04,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:31:04,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:31:04,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 00:31:04,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:04,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-11 00:31:04,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305447381] [2021-10-11 00:31:04,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 00:31:04,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:04,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 00:31:04,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:31:04,584 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 12 states. [2021-10-11 00:31:05,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:05,171 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2021-10-11 00:31:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-11 00:31:05,172 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2021-10-11 00:31:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:05,173 INFO L225 Difference]: With dead ends: 143 [2021-10-11 00:31:05,173 INFO L226 Difference]: Without dead ends: 142 [2021-10-11 00:31:05,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=358, Invalid=698, Unknown=0, NotChecked=0, Total=1056 [2021-10-11 00:31:05,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-11 00:31:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 60. [2021-10-11 00:31:05,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-10-11 00:31:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2021-10-11 00:31:05,182 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 27 [2021-10-11 00:31:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:05,182 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2021-10-11 00:31:05,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 00:31:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2021-10-11 00:31:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-11 00:31:05,183 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:05,183 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:05,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-11 00:31:05,409 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:05,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:05,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1685598945, now seen corresponding path program 1 times [2021-10-11 00:31:05,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:05,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617328482] [2021-10-11 00:31:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 00:31:05,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617328482] [2021-10-11 00:31:05,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523091808] [2021-10-11 00:31:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:05,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:31:05,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 00:31:05,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:31:05,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2021-10-11 00:31:05,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588001322] [2021-10-11 00:31:05,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:31:05,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:05,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:31:05,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:31:05,591 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 6 states. [2021-10-11 00:31:05,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:05,724 INFO L93 Difference]: Finished difference Result 147 states and 172 transitions. [2021-10-11 00:31:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:31:05,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2021-10-11 00:31:05,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:05,725 INFO L225 Difference]: With dead ends: 147 [2021-10-11 00:31:05,725 INFO L226 Difference]: Without dead ends: 102 [2021-10-11 00:31:05,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:31:05,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-11 00:31:05,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 71. [2021-10-11 00:31:05,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-10-11 00:31:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2021-10-11 00:31:05,735 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 39 [2021-10-11 00:31:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:05,736 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2021-10-11 00:31:05,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:31:05,736 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2021-10-11 00:31:05,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-11 00:31:05,737 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:05,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:05,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:05,955 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:05,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1243466243, now seen corresponding path program 2 times [2021-10-11 00:31:05,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:05,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721939589] [2021-10-11 00:31:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:31:06,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721939589] [2021-10-11 00:31:06,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261242121] [2021-10-11 00:31:06,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:31:06,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-11 00:31:06,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:31:06,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 00:31:06,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 00:31:06,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:06,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-11 00:31:06,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583655986] [2021-10-11 00:31:06,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 00:31:06,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:06,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 00:31:06,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:31:06,163 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 10 states. [2021-10-11 00:31:06,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:06,401 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2021-10-11 00:31:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 00:31:06,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2021-10-11 00:31:06,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:06,403 INFO L225 Difference]: With dead ends: 142 [2021-10-11 00:31:06,403 INFO L226 Difference]: Without dead ends: 141 [2021-10-11 00:31:06,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2021-10-11 00:31:06,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-11 00:31:06,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 82. [2021-10-11 00:31:06,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-10-11 00:31:06,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2021-10-11 00:31:06,415 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 39 [2021-10-11 00:31:06,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:06,416 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2021-10-11 00:31:06,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 00:31:06,416 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2021-10-11 00:31:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-11 00:31:06,417 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:06,417 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-11 00:31:06,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:31:06,633 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:31:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1165798321, now seen corresponding path program 3 times [2021-10-11 00:31:06,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:06,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841876096] [2021-10-11 00:31:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 00:31:06,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841876096] [2021-10-11 00:31:06,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841120509] [2021-10-11 00:31:06,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:31:06,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 00:31:06,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 00:31:06,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:31:06,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-11 00:31:06,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:06,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3] total 13 [2021-10-11 00:31:06,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146822195] [2021-10-11 00:31:06,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-10-11 00:31:06,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:06,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-11 00:31:06,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-11 00:31:06,877 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 14 states. [2021-10-11 00:31:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:07,440 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2021-10-11 00:31:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-11 00:31:07,440 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2021-10-11 00:31:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:07,441 INFO L225 Difference]: With dead ends: 198 [2021-10-11 00:31:07,441 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:31:07,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=430, Invalid=830, Unknown=0, NotChecked=0, Total=1260 [2021-10-11 00:31:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:31:07,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:31:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:31:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:31:07,443 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2021-10-11 00:31:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:07,444 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:31:07,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-10-11 00:31:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:31:07,444 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:31:07,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-11 00:31:07,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 00:31:07,806 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 78 [2021-10-11 00:31:08,022 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 122 [2021-10-11 00:31:08,244 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 112 [2021-10-11 00:31:08,703 WARN L197 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 26 [2021-10-11 00:31:09,445 WARN L197 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 35 [2021-10-11 00:31:09,830 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 28 [2021-10-11 00:31:09,834 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2021-10-11 00:31:09,834 INFO L258 CegarLoopResult]: At program point L23-2(lines 23 34) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse5 (<= ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~j~0)) (.cse6 (<= 0 ULTIMATE.start_main_~j~0)) (.cse1 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse2 (<= 0 ULTIMATE.start_main_~N~0)) (.cse3 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse4 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and .cse0 (<= ULTIMATE.start_main_~i~0 0) .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse6 .cse2 .cse3 (<= ULTIMATE.start_main_~j~0 0) .cse4) (and .cse5 (<= ULTIMATE.start_main_~N~0 ULTIMATE.start_main_~i~0) .cse6 .cse1 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1)) .cse2 .cse3 .cse4))) [2021-10-11 00:31:09,835 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-10-11 00:31:09,835 INFO L265 CegarLoopResult]: At program point L36(lines 13 37) the Hoare annotation is: true [2021-10-11 00:31:09,835 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-11 00:31:09,835 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 00:31:09,835 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2021-10-11 00:31:09,835 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 00:31:09,835 INFO L262 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-10-11 00:31:09,836 INFO L262 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2021-10-11 00:31:09,836 INFO L258 CegarLoopResult]: At program point L28-4(lines 28 30) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse1 (<= 0 ULTIMATE.start_main_~j~0)) (.cse2 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse3 (<= 0 ULTIMATE.start_main_~N~0)) (.cse4 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse5 (< ULTIMATE.start_main_~k~0 2147483647)) (.cse6 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse7 (<= 0 ULTIMATE.start_main_~k~0))) (or (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1)) .cse3 .cse4 .cse5 .cse6 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~i~0 1)) .cse7) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2021-10-11 00:31:09,836 INFO L262 CegarLoopResult]: For program point L28-5(lines 28 30) no Hoare annotation was computed. [2021-10-11 00:31:09,836 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-11 00:31:09,836 INFO L262 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2021-10-11 00:31:09,836 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 00:31:09,836 INFO L262 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-11 00:31:09,837 INFO L262 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-10-11 00:31:09,837 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2021-10-11 00:31:09,837 INFO L258 CegarLoopResult]: At program point L25-2(lines 25 32) the Hoare annotation is: (let ((.cse4 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse1 (<= 0 ULTIMATE.start_main_~j~0)) (.cse7 (<= ULTIMATE.start_main_~i~0 2147483646)) (.cse2 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse8 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1))) (.cse3 (<= 0 ULTIMATE.start_main_~N~0)) (.cse6 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse5 (<= ULTIMATE.start_main_~j~0 0))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 0) .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse7 (<= ULTIMATE.start_main_~m~0 0) .cse3 .cse4 .cse6 .cse5) (and .cse0 .cse1 (< ULTIMATE.start_main_~i~0 2147483647) .cse2 .cse8 .cse3 (< ULTIMATE.start_main_~k~0 2147483647) .cse6 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~i~0 1)) (<= 0 ULTIMATE.start_main_~k~0)) (and (<= ULTIMATE.start_main_~N~0 ULTIMATE.start_main_~i~0) .cse1 .cse7 .cse2 .cse8 .cse3 .cse6 .cse5))) [2021-10-11 00:31:09,837 INFO L262 CegarLoopResult]: For program point L25-3(lines 25 32) no Hoare annotation was computed. [2021-10-11 00:31:09,838 INFO L262 CegarLoopResult]: For program point L21(lines 21 35) no Hoare annotation was computed. [2021-10-11 00:31:09,838 INFO L262 CegarLoopResult]: For program point L21-1(lines 21 35) no Hoare annotation was computed. [2021-10-11 00:31:09,838 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2021-10-11 00:31:09,838 INFO L262 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-11 00:31:09,838 INFO L262 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-11 00:31:09,838 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2021-10-11 00:31:09,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:31:09 BoogieIcfgContainer [2021-10-11 00:31:09,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:31:09,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:31:09,887 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:31:09,888 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:31:09,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:30:59" (3/4) ... [2021-10-11 00:31:09,891 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:31:09,904 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 00:31:09,905 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 00:31:09,958 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59bf878c-509d-4c71-8af3-6a68baea1c8d/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:31:09,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:31:09,960 INFO L168 Benchmark]: Toolchain (without parser) took 10964.19 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 63.7 MB in the beginning and 91.3 MB in the end (delta: -27.6 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:09,961 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory was 80.5 MB in the beginning and 80.4 MB in the end (delta: 111.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:09,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.16 ms. Allocated memory is still 98.6 MB. Free memory was 63.5 MB in the beginning and 76.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:09,962 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.47 ms. Allocated memory is still 98.6 MB. Free memory was 76.6 MB in the beginning and 75.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:09,962 INFO L168 Benchmark]: Boogie Preprocessor took 38.64 ms. Allocated memory is still 98.6 MB. Free memory was 75.3 MB in the beginning and 74.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:09,963 INFO L168 Benchmark]: RCFGBuilder took 429.23 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 62.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:09,964 INFO L168 Benchmark]: TraceAbstraction took 10150.04 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 62.0 MB in the beginning and 94.5 MB in the end (delta: -32.5 MB). Peak memory consumption was 70.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:09,964 INFO L168 Benchmark]: Witness Printer took 71.47 ms. Allocated memory is still 174.1 MB. Free memory was 93.4 MB in the beginning and 91.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:09,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory was 80.5 MB in the beginning and 80.4 MB in the end (delta: 111.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.16 ms. Allocated memory is still 98.6 MB. Free memory was 63.5 MB in the beginning and 76.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.47 ms. Allocated memory is still 98.6 MB. Free memory was 76.6 MB in the beginning and 75.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.64 ms. Allocated memory is still 98.6 MB. Free memory was 75.3 MB in the beginning and 74.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 429.23 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 62.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10150.04 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 62.0 MB in the beginning and 94.5 MB in the end (delta: -32.5 MB). Peak memory consumption was 70.7 MB. Max. memory is 16.1 GB. * Witness Printer took 71.47 ms. Allocated memory is still 174.1 MB. Free memory was 93.4 MB in the beginning and 91.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((0 <= i && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && n <= 2147483647) || ((((((m <= j && 0 <= i) && 0 <= j) && 0 <= N) && N <= 2147483647) && j <= 0) && n <= 2147483647)) || (((((((m <= j && N <= i) && 0 <= j) && m <= 2147483647) && N <= k + 1) && 0 <= N) && N <= 2147483647) && n <= 2147483647) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((((((0 <= i && 0 <= j) && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && j <= 0) && n <= 2147483647) || (((((((0 <= i && 0 <= j) && i <= 2147483646) && m <= 0) && 0 <= N) && N <= 2147483647) && n <= 2147483647) && j <= 0)) || (((((((((0 <= i && 0 <= j) && i < 2147483647) && m <= 2147483647) && N <= k + 1) && 0 <= N) && k < 2147483647) && n <= 2147483647) && N <= i + 1) && 0 <= k)) || (((((((N <= i && 0 <= j) && i <= 2147483646) && m <= 2147483647) && N <= k + 1) && 0 <= N) && n <= 2147483647) && j <= 0) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((0 <= i && 0 <= j) && m <= 2147483647) && N <= k + 1) && 0 <= N) && N <= 2147483647) && k < 2147483647) && n <= 2147483647) && N <= i + 1) && 0 <= k) || ((((((((0 <= i && 0 <= j) && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && k < 2147483647) && n <= 2147483647) && 0 <= k) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.8s, OverallIterations: 21, TraceHistogramMax: 6, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 948 SDslu, 455 SDs, 0 SdLazy, 723 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 260 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=20, 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, 21 MinimizatonAttempts, 400 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 63 NumberOfFragments, 247 HoareAnnotationTreeSize, 4 FomulaSimplifications, 507289 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 4 FomulaSimplificationsInter, 68216 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 589 NumberOfCodeBlocks, 530 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 557 ConstructedInterpolants, 0 QuantifiedInterpolants, 39851 SizeOfPredicates, 22 NumberOfNonLiveVariables, 638 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 32 InterpolantComputations, 11 PerfectInterpolantSequences, 156/478 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...