./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be --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 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:15:43,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:15:43,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:15:44,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:15:44,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:15:44,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:15:44,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:15:44,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:15:44,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:15:44,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:15:44,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:15:44,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:15:44,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:15:44,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:15:44,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:15:44,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:15:44,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:15:44,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:15:44,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:15:44,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:15:44,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:15:44,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:15:44,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:15:44,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:15:44,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:15:44,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:15:44,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:15:44,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:15:44,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:15:44,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:15:44,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:15:44,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:15:44,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:15:44,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:15:44,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:15:44,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:15:44,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:15:44,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:15:44,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:15:44,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:15:44,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:15:44,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-21 19:15:44,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:15:44,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:15:44,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:15:44,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:15:44,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:15:44,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:15:44,118 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:15:44,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:15:44,119 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:15:44,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:15:44,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:15:44,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:15:44,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:15:44,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:15:44,120 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 19:15:44,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:15:44,120 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:15:44,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:15:44,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:15:44,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:15:44,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:15:44,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:15:44,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:15:44,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:15:44,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:15:44,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:15:44,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:15:44,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:15:44,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:15:44,130 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_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2021-10-21 19:15:44,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:15:44,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:15:44,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:15:44,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:15:44,424 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:15:44,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-10-21 19:15:44,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/data/beeb48f77/a62f691153e6428da142975ae04ad250/FLAG60843b7ca [2021-10-21 19:15:44,965 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:15:44,965 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-10-21 19:15:44,970 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/data/beeb48f77/a62f691153e6428da142975ae04ad250/FLAG60843b7ca [2021-10-21 19:15:45,350 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/data/beeb48f77/a62f691153e6428da142975ae04ad250 [2021-10-21 19:15:45,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:15:45,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:15:45,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:15:45,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:15:45,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:15:45,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72461005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45, skipping insertion in model container [2021-10-21 19:15:45,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:15:45,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:15:45,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:15:45,580 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:15:45,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:15:45,605 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:15:45,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45 WrapperNode [2021-10-21 19:15:45,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:15:45,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:15:45,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:15:45,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:15:45,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:15:45,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:15:45,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:15:45,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:15:45,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:15:45,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:15:45,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:15:45,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:15:45,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45" (1/1) ... [2021-10-21 19:15:45,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:15:45,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:45,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:15:45,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:15:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:15:45,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:15:45,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:15:45,887 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 19:15:45,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:15:45 BoogieIcfgContainer [2021-10-21 19:15:45,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:15:45,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:15:45,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:15:45,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:15:45,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:15:45" (1/3) ... [2021-10-21 19:15:45,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f84bf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:15:45, skipping insertion in model container [2021-10-21 19:15:45,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:15:45" (2/3) ... [2021-10-21 19:15:45,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f84bf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:15:45, skipping insertion in model container [2021-10-21 19:15:45,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:15:45" (3/3) ... [2021-10-21 19:15:45,898 INFO L111 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2021-10-21 19:15:45,903 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:15:45,904 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-21 19:15:45,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:15:45,957 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:15:45,957 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-21 19:15:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.75) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:45,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-21 19:15:45,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:45,977 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-21 19:15:45,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:45,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:45,983 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-21 19:15:45,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:45,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121264532] [2021-10-21 19:15:45,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:45,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:46,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:46,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121264532] [2021-10-21 19:15:46,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121264532] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:15:46,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:15:46,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:15:46,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969169426] [2021-10-21 19:15:46,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:15:46,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:46,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:15:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:15:46,159 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.75) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:46,195 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2021-10-21 19:15:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:15:46,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-21 19:15:46,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:46,205 INFO L225 Difference]: With dead ends: 49 [2021-10-21 19:15:46,206 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 19:15:46,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:15:46,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 19:15:46,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-10-21 19:15:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-21 19:15:46,240 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2021-10-21 19:15:46,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:46,241 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-21 19:15:46,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,242 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-21 19:15:46,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-21 19:15:46,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:46,242 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-21 19:15:46,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:15:46,243 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:46,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:46,244 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-21 19:15:46,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:46,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040509361] [2021-10-21 19:15:46,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:46,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:46,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:46,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040509361] [2021-10-21 19:15:46,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040509361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:15:46,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:15:46,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 19:15:46,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376316322] [2021-10-21 19:15:46,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:15:46,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:46,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:15:46,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:15:46,284 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:46,320 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-10-21 19:15:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:15:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-21 19:15:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:46,322 INFO L225 Difference]: With dead ends: 21 [2021-10-21 19:15:46,322 INFO L226 Difference]: Without dead ends: 20 [2021-10-21 19:15:46,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:15:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-21 19:15:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-21 19:15:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-21 19:15:46,327 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2021-10-21 19:15:46,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:46,328 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-21 19:15:46,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,329 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-21 19:15:46,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 19:15:46,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:46,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 19:15:46,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:15:46,330 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:46,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:46,331 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-21 19:15:46,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:46,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381684912] [2021-10-21 19:15:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:46,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:46,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:46,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381684912] [2021-10-21 19:15:46,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381684912] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:15:46,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:15:46,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 19:15:46,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205936074] [2021-10-21 19:15:46,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:15:46,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:46,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:15:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:15:46,376 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:46,394 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-21 19:15:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:15:46,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-21 19:15:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:46,396 INFO L225 Difference]: With dead ends: 25 [2021-10-21 19:15:46,396 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 19:15:46,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:15:46,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 19:15:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-10-21 19:15:46,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-21 19:15:46,401 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-10-21 19:15:46,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:46,402 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-21 19:15:46,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,402 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-21 19:15:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:15:46,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:46,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:15:46,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:15:46,404 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:46,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1365891962, now seen corresponding path program 1 times [2021-10-21 19:15:46,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:46,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947085970] [2021-10-21 19:15:46,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:46,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:46,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:46,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947085970] [2021-10-21 19:15:46,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947085970] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:15:46,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:15:46,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 19:15:46,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344752865] [2021-10-21 19:15:46,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:15:46,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:46,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:15:46,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:15:46,437 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:46,447 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-21 19:15:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:15:46,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-21 19:15:46,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:46,449 INFO L225 Difference]: With dead ends: 18 [2021-10-21 19:15:46,449 INFO L226 Difference]: Without dead ends: 17 [2021-10-21 19:15:46,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:15:46,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-21 19:15:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-21 19:15:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-21 19:15:46,454 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-10-21 19:15:46,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:46,455 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-21 19:15:46,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,456 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-21 19:15:46,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:15:46,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:46,457 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:15:46,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:15:46,457 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:46,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:46,458 INFO L82 PathProgramCache]: Analyzing trace with hash -767237628, now seen corresponding path program 1 times [2021-10-21 19:15:46,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:46,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392719526] [2021-10-21 19:15:46,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:46,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:46,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:46,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392719526] [2021-10-21 19:15:46,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392719526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:46,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147415995] [2021-10-21 19:15:46,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:46,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:46,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:46,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:46,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:15:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:46,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:15:46,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:46,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147415995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:46,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:46,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2021-10-21 19:15:46,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203755863] [2021-10-21 19:15:46,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:15:46,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:46,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:15:46,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:15:46,744 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:46,842 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-10-21 19:15:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:15:46,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-21 19:15:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:46,844 INFO L225 Difference]: With dead ends: 35 [2021-10-21 19:15:46,844 INFO L226 Difference]: Without dead ends: 24 [2021-10-21 19:15:46,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 70.5ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:15:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-21 19:15:46,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-21 19:15:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-21 19:15:46,849 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 10 [2021-10-21 19:15:46,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:46,850 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-21 19:15:46,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:46,850 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-10-21 19:15:46,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:15:46,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:46,851 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1] [2021-10-21 19:15:46,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:47,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:47,067 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:47,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:47,068 INFO L82 PathProgramCache]: Analyzing trace with hash -907820675, now seen corresponding path program 2 times [2021-10-21 19:15:47,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:47,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163664797] [2021-10-21 19:15:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:47,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:15:47,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:47,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163664797] [2021-10-21 19:15:47,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163664797] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:15:47,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:15:47,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:15:47,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222474708] [2021-10-21 19:15:47,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:15:47,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:47,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:15:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:15:47,112 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:47,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:47,132 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-10-21 19:15:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:15:47,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-21 19:15:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:47,133 INFO L225 Difference]: With dead ends: 32 [2021-10-21 19:15:47,134 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 19:15:47,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:15:47,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 19:15:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-10-21 19:15:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:47,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-10-21 19:15:47,139 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 16 [2021-10-21 19:15:47,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:47,140 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-10-21 19:15:47,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:47,140 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-10-21 19:15:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:15:47,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:47,141 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1] [2021-10-21 19:15:47,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:15:47,142 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:47,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:47,142 INFO L82 PathProgramCache]: Analyzing trace with hash -907820867, now seen corresponding path program 1 times [2021-10-21 19:15:47,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:47,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75797800] [2021-10-21 19:15:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:47,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:47,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:47,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75797800] [2021-10-21 19:15:47,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75797800] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:47,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412878109] [2021-10-21 19:15:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:47,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:47,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:47,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:47,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:15:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:47,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:15:47,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:47,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412878109] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:47,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:47,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-21 19:15:47,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769091277] [2021-10-21 19:15:47,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:15:47,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:47,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:15:47,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:15:47,326 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:47,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:47,360 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2021-10-21 19:15:47,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:15:47,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-21 19:15:47,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:47,361 INFO L225 Difference]: With dead ends: 60 [2021-10-21 19:15:47,362 INFO L226 Difference]: Without dead ends: 59 [2021-10-21 19:15:47,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:15:47,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-21 19:15:47,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2021-10-21 19:15:47,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2021-10-21 19:15:47,370 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 16 [2021-10-21 19:15:47,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:47,371 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2021-10-21 19:15:47,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:47,371 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-10-21 19:15:47,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:15:47,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:47,372 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-21 19:15:47,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:47,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:47,591 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:47,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:47,591 INFO L82 PathProgramCache]: Analyzing trace with hash -537305888, now seen corresponding path program 1 times [2021-10-21 19:15:47,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:47,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109535622] [2021-10-21 19:15:47,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:47,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:47,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:15:47,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:47,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109535622] [2021-10-21 19:15:47,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109535622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:47,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844583209] [2021-10-21 19:15:47,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:47,657 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:47,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:47,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:47,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:15:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:47,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:15:47,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:47,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844583209] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:47,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:47,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-21 19:15:47,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802788265] [2021-10-21 19:15:47,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:15:47,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:47,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:15:47,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:15:47,811 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:47,859 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2021-10-21 19:15:47,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:15:47,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 19:15:47,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:47,860 INFO L225 Difference]: With dead ends: 75 [2021-10-21 19:15:47,860 INFO L226 Difference]: Without dead ends: 40 [2021-10-21 19:15:47,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:15:47,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-21 19:15:47,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-10-21 19:15:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-21 19:15:47,880 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 18 [2021-10-21 19:15:47,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:47,880 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-21 19:15:47,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-21 19:15:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:15:47,882 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:47,882 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1] [2021-10-21 19:15:47,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:48,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:48,083 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:48,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:48,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1586405002, now seen corresponding path program 2 times [2021-10-21 19:15:48,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:48,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899917151] [2021-10-21 19:15:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:48,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:48,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:48,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899917151] [2021-10-21 19:15:48,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899917151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:48,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189553933] [2021-10-21 19:15:48,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:15:48,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:48,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:48,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:48,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:15:48,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:15:48,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:48,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:15:48,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:48,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189553933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:48,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:48,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:15:48,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875682737] [2021-10-21 19:15:48,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:15:48,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:48,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:15:48,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:15:48,292 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:48,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:48,319 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-21 19:15:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:15:48,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 19:15:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:48,320 INFO L225 Difference]: With dead ends: 42 [2021-10-21 19:15:48,320 INFO L226 Difference]: Without dead ends: 41 [2021-10-21 19:15:48,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:15:48,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-21 19:15:48,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-21 19:15:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-21 19:15:48,325 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 22 [2021-10-21 19:15:48,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:48,326 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-21 19:15:48,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-21 19:15:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 19:15:48,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:48,327 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1] [2021-10-21 19:15:48,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:48,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:48,547 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:48,547 INFO L82 PathProgramCache]: Analyzing trace with hash -89664657, now seen corresponding path program 3 times [2021-10-21 19:15:48,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:48,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303603497] [2021-10-21 19:15:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:48,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:48,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:48,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303603497] [2021-10-21 19:15:48,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303603497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:48,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649374810] [2021-10-21 19:15:48,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:15:48,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:48,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:48,631 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:48,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:15:48,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-21 19:15:48,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:48,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:15:48,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:48,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649374810] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:48,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:48,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-21 19:15:48,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304609645] [2021-10-21 19:15:48,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:15:48,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:48,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:15:48,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:15:48,805 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:48,855 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2021-10-21 19:15:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:15:48,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-21 19:15:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:48,860 INFO L225 Difference]: With dead ends: 107 [2021-10-21 19:15:48,860 INFO L226 Difference]: Without dead ends: 106 [2021-10-21 19:15:48,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.1ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:15:48,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-21 19:15:48,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2021-10-21 19:15:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 95 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2021-10-21 19:15:48,871 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 28 [2021-10-21 19:15:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:48,871 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2021-10-21 19:15:48,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2021-10-21 19:15:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-21 19:15:48,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:48,873 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1] [2021-10-21 19:15:48,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-21 19:15:49,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 19:15:49,083 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:49,083 INFO L82 PathProgramCache]: Analyzing trace with hash 661989032, now seen corresponding path program 4 times [2021-10-21 19:15:49,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:49,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537502040] [2021-10-21 19:15:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:49,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:49,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:49,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537502040] [2021-10-21 19:15:49,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537502040] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:49,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384725136] [2021-10-21 19:15:49,185 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:15:49,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:49,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:49,191 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:49,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:15:49,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:15:49,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:49,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:15:49,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:49,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384725136] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:49,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:49,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-21 19:15:49,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623581246] [2021-10-21 19:15:49,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:15:49,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:49,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:15:49,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:15:49,404 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:49,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:49,466 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2021-10-21 19:15:49,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:15:49,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-21 19:15:49,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:49,471 INFO L225 Difference]: With dead ends: 183 [2021-10-21 19:15:49,471 INFO L226 Difference]: Without dead ends: 182 [2021-10-21 19:15:49,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:15:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-21 19:15:49,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 111. [2021-10-21 19:15:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.165137614678899) internal successors, (127), 110 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2021-10-21 19:15:49,492 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 34 [2021-10-21 19:15:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:49,492 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2021-10-21 19:15:49,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2021-10-21 19:15:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-21 19:15:49,494 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:49,494 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1] [2021-10-21 19:15:49,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:49,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-21 19:15:49,695 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:49,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:49,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1050459643, now seen corresponding path program 2 times [2021-10-21 19:15:49,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:49,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594453236] [2021-10-21 19:15:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:49,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:15:49,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:49,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594453236] [2021-10-21 19:15:49,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594453236] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:49,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007594923] [2021-10-21 19:15:49,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:15:49,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:49,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:49,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:49,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:15:49,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:15:49,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:49,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:15:49,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:15:49,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007594923] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:49,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:49,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-21 19:15:49,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387524936] [2021-10-21 19:15:49,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:15:49,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:49,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:15:49,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:15:49,937 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:49,963 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2021-10-21 19:15:49,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:15:49,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-21 19:15:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:49,965 INFO L225 Difference]: With dead ends: 211 [2021-10-21 19:15:49,966 INFO L226 Difference]: Without dead ends: 121 [2021-10-21 19:15:49,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.5ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:15:49,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-21 19:15:49,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-10-21 19:15:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 116 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2021-10-21 19:15:49,973 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 36 [2021-10-21 19:15:49,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:49,973 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2021-10-21 19:15:49,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2021-10-21 19:15:49,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-21 19:15:49,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:49,975 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1] [2021-10-21 19:15:50,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:50,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-21 19:15:50,191 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:50,191 INFO L82 PathProgramCache]: Analyzing trace with hash 855337761, now seen corresponding path program 5 times [2021-10-21 19:15:50,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:50,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558093834] [2021-10-21 19:15:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:50,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:50,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:50,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558093834] [2021-10-21 19:15:50,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558093834] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:50,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529959306] [2021-10-21 19:15:50,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:15:50,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:50,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:50,279 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:50,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:15:50,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-21 19:15:50,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:50,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:15:50,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:50,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529959306] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:50,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:50,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-21 19:15:50,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402016080] [2021-10-21 19:15:50,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:15:50,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:50,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:15:50,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:15:50,512 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:50,576 INFO L93 Difference]: Finished difference Result 221 states and 254 transitions. [2021-10-21 19:15:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:15:50,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-21 19:15:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:50,578 INFO L225 Difference]: With dead ends: 221 [2021-10-21 19:15:50,579 INFO L226 Difference]: Without dead ends: 220 [2021-10-21 19:15:50,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:15:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-21 19:15:50,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 132. [2021-10-21 19:15:50,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 130 states have (on average 1.1615384615384616) internal successors, (151), 131 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:50,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2021-10-21 19:15:50,585 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 40 [2021-10-21 19:15:50,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:50,585 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2021-10-21 19:15:50,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:50,585 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2021-10-21 19:15:50,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-21 19:15:50,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:50,587 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1] [2021-10-21 19:15:50,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:50,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-21 19:15:50,803 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:50,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:50,803 INFO L82 PathProgramCache]: Analyzing trace with hash 74075198, now seen corresponding path program 3 times [2021-10-21 19:15:50,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:50,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064907039] [2021-10-21 19:15:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:50,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:15:50,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:50,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064907039] [2021-10-21 19:15:50,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064907039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:50,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625380505] [2021-10-21 19:15:50,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:15:50,871 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:50,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:50,872 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:50,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:15:50,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 19:15:50,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:50,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:15:50,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-21 19:15:51,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625380505] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:51,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:51,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-10-21 19:15:51,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006203979] [2021-10-21 19:15:51,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:15:51,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:51,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:15:51,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:15:51,132 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:51,195 INFO L93 Difference]: Finished difference Result 169 states and 194 transitions. [2021-10-21 19:15:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:15:51,196 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-10-21 19:15:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:51,197 INFO L225 Difference]: With dead ends: 169 [2021-10-21 19:15:51,197 INFO L226 Difference]: Without dead ends: 64 [2021-10-21 19:15:51,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:15:51,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-21 19:15:51,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2021-10-21 19:15:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 62 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-10-21 19:15:51,201 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 42 [2021-10-21 19:15:51,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:51,201 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-10-21 19:15:51,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:51,202 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-10-21 19:15:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-21 19:15:51,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:51,203 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1] [2021-10-21 19:15:51,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-21 19:15:51,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:51,424 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:51,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:51,424 INFO L82 PathProgramCache]: Analyzing trace with hash 714125530, now seen corresponding path program 6 times [2021-10-21 19:15:51,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:51,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823891739] [2021-10-21 19:15:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:51,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:51,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:51,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823891739] [2021-10-21 19:15:51,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823891739] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:51,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216724403] [2021-10-21 19:15:51,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:15:51,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:51,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:51,518 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:51,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:15:51,645 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-21 19:15:51,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:51,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:15:51,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:51,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216724403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:51,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:51,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-21 19:15:51,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508496594] [2021-10-21 19:15:51,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:15:51,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:15:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:15:51,798 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:51,861 INFO L93 Difference]: Finished difference Result 216 states and 245 transitions. [2021-10-21 19:15:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:15:51,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-10-21 19:15:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:51,863 INFO L225 Difference]: With dead ends: 216 [2021-10-21 19:15:51,863 INFO L226 Difference]: Without dead ends: 215 [2021-10-21 19:15:51,866 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:15:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-21 19:15:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 198. [2021-10-21 19:15:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 196 states have (on average 1.153061224489796) internal successors, (226), 197 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 226 transitions. [2021-10-21 19:15:51,884 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 226 transitions. Word has length 46 [2021-10-21 19:15:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:51,884 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 226 transitions. [2021-10-21 19:15:51,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:51,885 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 226 transitions. [2021-10-21 19:15:51,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-21 19:15:51,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:51,885 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1] [2021-10-21 19:15:51,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:52,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-21 19:15:52,086 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:52,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:52,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1497430061, now seen corresponding path program 7 times [2021-10-21 19:15:52,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:52,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198279826] [2021-10-21 19:15:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:52,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:52,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:52,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198279826] [2021-10-21 19:15:52,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198279826] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:52,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047576289] [2021-10-21 19:15:52,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:15:52,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:52,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:52,178 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:52,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:15:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:52,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:15:52,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:52,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047576289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:52,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:52,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-21 19:15:52,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712747675] [2021-10-21 19:15:52,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:15:52,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:15:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:15:52,441 INFO L87 Difference]: Start difference. First operand 198 states and 226 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:52,536 INFO L93 Difference]: Finished difference Result 378 states and 436 transitions. [2021-10-21 19:15:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:15:52,536 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-10-21 19:15:52,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:52,538 INFO L225 Difference]: With dead ends: 378 [2021-10-21 19:15:52,539 INFO L226 Difference]: Without dead ends: 377 [2021-10-21 19:15:52,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:15:52,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-10-21 19:15:52,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 219. [2021-10-21 19:15:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 1.1566820276497696) internal successors, (251), 218 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:52,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2021-10-21 19:15:52,554 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 52 [2021-10-21 19:15:52,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:52,554 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2021-10-21 19:15:52,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:52,555 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2021-10-21 19:15:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-21 19:15:52,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:52,562 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1] [2021-10-21 19:15:52,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:52,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:52,779 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:52,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1807450100, now seen corresponding path program 8 times [2021-10-21 19:15:52,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:52,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242593779] [2021-10-21 19:15:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:52,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:52,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:52,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242593779] [2021-10-21 19:15:52,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242593779] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:52,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346860466] [2021-10-21 19:15:52,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:15:52,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:52,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:52,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:52,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 19:15:53,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:15:53,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:53,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:15:53,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:53,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346860466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:53,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:53,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-21 19:15:53,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239260313] [2021-10-21 19:15:53,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:15:53,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:53,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:15:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:15:53,216 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:53,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:53,296 INFO L93 Difference]: Finished difference Result 422 states and 488 transitions. [2021-10-21 19:15:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:15:53,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-21 19:15:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:53,299 INFO L225 Difference]: With dead ends: 422 [2021-10-21 19:15:53,300 INFO L226 Difference]: Without dead ends: 421 [2021-10-21 19:15:53,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.6ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:15:53,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-10-21 19:15:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 240. [2021-10-21 19:15:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 238 states have (on average 1.1596638655462186) internal successors, (276), 239 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 276 transitions. [2021-10-21 19:15:53,323 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 276 transitions. Word has length 58 [2021-10-21 19:15:53,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:53,325 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 276 transitions. [2021-10-21 19:15:53,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:53,325 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 276 transitions. [2021-10-21 19:15:53,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-21 19:15:53,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:53,329 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 7, 7, 7, 3, 3, 3, 1, 1] [2021-10-21 19:15:53,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:53,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-21 19:15:53,539 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:53,539 INFO L82 PathProgramCache]: Analyzing trace with hash -410764061, now seen corresponding path program 4 times [2021-10-21 19:15:53,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:53,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092521993] [2021-10-21 19:15:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:53,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 67 proven. 140 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-21 19:15:53,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:53,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092521993] [2021-10-21 19:15:53,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092521993] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:53,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38030644] [2021-10-21 19:15:53,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:15:53,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:53,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:53,625 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:53,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:15:53,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:15:53,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:53,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:15:53,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 67 proven. 140 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-21 19:15:53,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38030644] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:53,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:53,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-21 19:15:53,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842199539] [2021-10-21 19:15:53,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:15:53,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:53,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:15:53,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:15:53,949 INFO L87 Difference]: Start difference. First operand 240 states and 276 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:53,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:53,991 INFO L93 Difference]: Finished difference Result 451 states and 524 transitions. [2021-10-21 19:15:53,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:15:53,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-21 19:15:53,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:53,993 INFO L225 Difference]: With dead ends: 451 [2021-10-21 19:15:53,994 INFO L226 Difference]: Without dead ends: 250 [2021-10-21 19:15:53,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.2ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:15:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-21 19:15:54,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2021-10-21 19:15:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 244 states have (on average 1.1557377049180328) internal successors, (282), 245 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:54,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2021-10-21 19:15:54,005 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 60 [2021-10-21 19:15:54,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:54,005 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2021-10-21 19:15:54,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2021-10-21 19:15:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-21 19:15:54,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:54,006 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1] [2021-10-21 19:15:54,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:54,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 19:15:54,235 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:54,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:54,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1024665989, now seen corresponding path program 9 times [2021-10-21 19:15:54,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:54,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193027099] [2021-10-21 19:15:54,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:54,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:54,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:54,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193027099] [2021-10-21 19:15:54,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193027099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:54,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036090973] [2021-10-21 19:15:54,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:15:54,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:54,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:54,357 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:54,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 19:15:54,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-21 19:15:54,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:54,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:15:54,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:54,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036090973] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:54,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:54,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-21 19:15:54,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440607203] [2021-10-21 19:15:54,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:15:54,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:54,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:15:54,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:15:54,760 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:54,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:54,853 INFO L93 Difference]: Finished difference Result 472 states and 546 transitions. [2021-10-21 19:15:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:15:54,854 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-10-21 19:15:54,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:54,857 INFO L225 Difference]: With dead ends: 472 [2021-10-21 19:15:54,857 INFO L226 Difference]: Without dead ends: 471 [2021-10-21 19:15:54,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.5ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:15:54,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-10-21 19:15:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 267. [2021-10-21 19:15:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 265 states have (on average 1.1584905660377358) internal successors, (307), 266 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 307 transitions. [2021-10-21 19:15:54,871 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 307 transitions. Word has length 64 [2021-10-21 19:15:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:54,872 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 307 transitions. [2021-10-21 19:15:54,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 307 transitions. [2021-10-21 19:15:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-21 19:15:54,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:54,873 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 8, 8, 8, 3, 3, 3, 1, 1] [2021-10-21 19:15:54,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:55,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:55,099 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:55,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1756468196, now seen corresponding path program 5 times [2021-10-21 19:15:55,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:55,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460488230] [2021-10-21 19:15:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:55,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 76 proven. 184 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-21 19:15:55,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:55,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460488230] [2021-10-21 19:15:55,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460488230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:55,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580775273] [2021-10-21 19:15:55,192 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:15:55,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:55,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:55,193 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:55,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 19:15:55,409 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-21 19:15:55,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:55,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:15:55,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 76 proven. 184 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-21 19:15:55,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580775273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:55,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:55,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-21 19:15:55,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435845438] [2021-10-21 19:15:55,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:15:55,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:15:55,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:15:55,583 INFO L87 Difference]: Start difference. First operand 267 states and 307 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:55,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:55,625 INFO L93 Difference]: Finished difference Result 499 states and 580 transitions. [2021-10-21 19:15:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:15:55,626 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-10-21 19:15:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:55,628 INFO L225 Difference]: With dead ends: 499 [2021-10-21 19:15:55,628 INFO L226 Difference]: Without dead ends: 277 [2021-10-21 19:15:55,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.3ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:15:55,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-10-21 19:15:55,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 273. [2021-10-21 19:15:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 271 states have (on average 1.154981549815498) internal successors, (313), 272 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 313 transitions. [2021-10-21 19:15:55,640 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 313 transitions. Word has length 66 [2021-10-21 19:15:55,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:55,640 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 313 transitions. [2021-10-21 19:15:55,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:55,641 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 313 transitions. [2021-10-21 19:15:55,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-21 19:15:55,644 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:55,644 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1] [2021-10-21 19:15:55,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:55,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-10-21 19:15:55,871 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:55,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:55,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1856957378, now seen corresponding path program 10 times [2021-10-21 19:15:55,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:55,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017303723] [2021-10-21 19:15:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:55,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:56,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:56,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017303723] [2021-10-21 19:15:56,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017303723] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:56,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727591833] [2021-10-21 19:15:56,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:15:56,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:56,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:56,011 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:56,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-21 19:15:56,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:15:56,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:56,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:15:56,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:56,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727591833] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:56,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:56,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-21 19:15:56,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80023266] [2021-10-21 19:15:56,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:15:56,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:56,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:15:56,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:15:56,470 INFO L87 Difference]: Start difference. First operand 273 states and 313 transitions. Second operand has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:56,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:56,586 INFO L93 Difference]: Finished difference Result 522 states and 604 transitions. [2021-10-21 19:15:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:15:56,587 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-10-21 19:15:56,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:56,590 INFO L225 Difference]: With dead ends: 522 [2021-10-21 19:15:56,590 INFO L226 Difference]: Without dead ends: 521 [2021-10-21 19:15:56,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.8ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:15:56,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-10-21 19:15:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 294. [2021-10-21 19:15:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 292 states have (on average 1.1575342465753424) internal successors, (338), 293 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 338 transitions. [2021-10-21 19:15:56,605 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 338 transitions. Word has length 70 [2021-10-21 19:15:56,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:56,606 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 338 transitions. [2021-10-21 19:15:56,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 338 transitions. [2021-10-21 19:15:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-21 19:15:56,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:56,607 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 9, 9, 9, 3, 3, 3, 1, 1] [2021-10-21 19:15:56,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:56,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:56,835 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:56,835 INFO L82 PathProgramCache]: Analyzing trace with hash -742617963, now seen corresponding path program 6 times [2021-10-21 19:15:56,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:56,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989398818] [2021-10-21 19:15:56,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:56,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 85 proven. 234 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-21 19:15:56,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:56,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989398818] [2021-10-21 19:15:56,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989398818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:56,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459168917] [2021-10-21 19:15:56,968 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:15:56,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:56,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:56,970 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:56,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-21 19:15:57,199 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-21 19:15:57,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:57,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:15:57,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-10-21 19:15:57,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459168917] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:57,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:57,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 16 [2021-10-21 19:15:57,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136088043] [2021-10-21 19:15:57,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 19:15:57,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:15:57,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:15:57,426 INFO L87 Difference]: Start difference. First operand 294 states and 338 transitions. Second operand has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:57,494 INFO L93 Difference]: Finished difference Result 615 states and 724 transitions. [2021-10-21 19:15:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:15:57,497 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-10-21 19:15:57,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:57,499 INFO L225 Difference]: With dead ends: 615 [2021-10-21 19:15:57,499 INFO L226 Difference]: Without dead ends: 372 [2021-10-21 19:15:57,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:15:57,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-21 19:15:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 363. [2021-10-21 19:15:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 361 states have (on average 1.1523545706371192) internal successors, (416), 362 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 416 transitions. [2021-10-21 19:15:57,513 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 416 transitions. Word has length 72 [2021-10-21 19:15:57,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:57,513 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 416 transitions. [2021-10-21 19:15:57,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 416 transitions. [2021-10-21 19:15:57,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-21 19:15:57,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:57,514 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1] [2021-10-21 19:15:57,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:57,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:57,739 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:57,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:57,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1336389577, now seen corresponding path program 11 times [2021-10-21 19:15:57,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:57,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313791239] [2021-10-21 19:15:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:57,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:57,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:57,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313791239] [2021-10-21 19:15:57,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313791239] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:57,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830915181] [2021-10-21 19:15:57,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:15:57,878 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:57,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:57,879 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:57,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-21 19:15:58,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-21 19:15:58,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:58,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:15:58,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:58,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830915181] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:58,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:58,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-21 19:15:58,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432112007] [2021-10-21 19:15:58,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:15:58,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:58,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:15:58,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:15:58,391 INFO L87 Difference]: Start difference. First operand 363 states and 416 transitions. Second operand has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:58,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:58,489 INFO L93 Difference]: Finished difference Result 695 states and 804 transitions. [2021-10-21 19:15:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:15:58,490 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-10-21 19:15:58,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:58,494 INFO L225 Difference]: With dead ends: 695 [2021-10-21 19:15:58,494 INFO L226 Difference]: Without dead ends: 694 [2021-10-21 19:15:58,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.4ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:15:58,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-10-21 19:15:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 390. [2021-10-21 19:15:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 388 states have (on average 1.1546391752577319) internal successors, (448), 389 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:58,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 448 transitions. [2021-10-21 19:15:58,511 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 448 transitions. Word has length 76 [2021-10-21 19:15:58,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:58,511 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 448 transitions. [2021-10-21 19:15:58,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:58,512 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 448 transitions. [2021-10-21 19:15:58,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-21 19:15:58,512 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:58,512 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1] [2021-10-21 19:15:58,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:58,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-21 19:15:58,723 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:58,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1313411728, now seen corresponding path program 12 times [2021-10-21 19:15:58,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:58,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953045975] [2021-10-21 19:15:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:58,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:58,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:58,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953045975] [2021-10-21 19:15:58,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953045975] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:58,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127145752] [2021-10-21 19:15:58,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:15:58,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:58,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:58,866 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:58,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-21 19:15:59,125 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-10-21 19:15:59,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:15:59,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:15:59,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:15:59,380 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:59,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127145752] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:59,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:15:59,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-21 19:15:59,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088185106] [2021-10-21 19:15:59,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 19:15:59,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:15:59,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:15:59,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:15:59,382 INFO L87 Difference]: Start difference. First operand 390 states and 448 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:15:59,501 INFO L93 Difference]: Finished difference Result 751 states and 870 transitions. [2021-10-21 19:15:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:15:59,503 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-10-21 19:15:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:15:59,507 INFO L225 Difference]: With dead ends: 751 [2021-10-21 19:15:59,508 INFO L226 Difference]: Without dead ends: 750 [2021-10-21 19:15:59,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.1ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:15:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-10-21 19:15:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 417. [2021-10-21 19:15:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 415 states have (on average 1.1566265060240963) internal successors, (480), 416 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:59,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 480 transitions. [2021-10-21 19:15:59,526 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 480 transitions. Word has length 82 [2021-10-21 19:15:59,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:15:59,527 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 480 transitions. [2021-10-21 19:15:59,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:15:59,527 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 480 transitions. [2021-10-21 19:15:59,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-21 19:15:59,528 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:15:59,528 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1] [2021-10-21 19:15:59,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:15:59,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:59,751 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:15:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:15:59,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1372652567, now seen corresponding path program 13 times [2021-10-21 19:15:59,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:15:59,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817658194] [2021-10-21 19:15:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:15:59,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:15:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:15:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:15:59,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:15:59,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817658194] [2021-10-21 19:15:59,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817658194] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:15:59,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194499618] [2021-10-21 19:15:59,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:15:59,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:15:59,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:15:59,913 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:15:59,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-21 19:16:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:00,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:16:00,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:00,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194499618] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:00,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:00,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-10-21 19:16:00,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128146735] [2021-10-21 19:16:00,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 19:16:00,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:16:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:16:00,437 INFO L87 Difference]: Start difference. First operand 417 states and 480 transitions. Second operand has 17 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:00,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:00,560 INFO L93 Difference]: Finished difference Result 807 states and 936 transitions. [2021-10-21 19:16:00,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 19:16:00,560 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-10-21 19:16:00,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:00,564 INFO L225 Difference]: With dead ends: 807 [2021-10-21 19:16:00,565 INFO L226 Difference]: Without dead ends: 806 [2021-10-21 19:16:00,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.9ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:16:00,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-10-21 19:16:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 444. [2021-10-21 19:16:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 442 states have (on average 1.158371040723982) internal successors, (512), 443 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:00,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 512 transitions. [2021-10-21 19:16:00,589 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 512 transitions. Word has length 88 [2021-10-21 19:16:00,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:00,590 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 512 transitions. [2021-10-21 19:16:00,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:00,590 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 512 transitions. [2021-10-21 19:16:00,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-21 19:16:00,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:00,592 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 11, 11, 11, 4, 4, 4, 1, 1] [2021-10-21 19:16:00,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:00,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:00,819 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:00,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:00,819 INFO L82 PathProgramCache]: Analyzing trace with hash 289561722, now seen corresponding path program 7 times [2021-10-21 19:16:00,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:00,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729079797] [2021-10-21 19:16:00,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:00,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 352 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-21 19:16:00,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:00,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729079797] [2021-10-21 19:16:00,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729079797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:00,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684573056] [2021-10-21 19:16:00,970 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:16:00,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:00,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:00,975 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:00,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-21 19:16:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:01,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:16:01,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 352 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-21 19:16:01,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684573056] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:01,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:01,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-21 19:16:01,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705311813] [2021-10-21 19:16:01,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:16:01,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:01,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:16:01,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:16:01,524 INFO L87 Difference]: Start difference. First operand 444 states and 512 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:01,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:01,574 INFO L93 Difference]: Finished difference Result 835 states and 972 transitions. [2021-10-21 19:16:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:16:01,575 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-10-21 19:16:01,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:01,578 INFO L225 Difference]: With dead ends: 835 [2021-10-21 19:16:01,578 INFO L226 Difference]: Without dead ends: 454 [2021-10-21 19:16:01,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.5ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:16:01,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-21 19:16:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 450. [2021-10-21 19:16:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 448 states have (on average 1.15625) internal successors, (518), 449 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 518 transitions. [2021-10-21 19:16:01,594 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 518 transitions. Word has length 90 [2021-10-21 19:16:01,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:01,594 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 518 transitions. [2021-10-21 19:16:01,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:01,595 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 518 transitions. [2021-10-21 19:16:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-21 19:16:01,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:01,596 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1] [2021-10-21 19:16:01,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:01,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-21 19:16:01,823 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:01,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:01,823 INFO L82 PathProgramCache]: Analyzing trace with hash 146181026, now seen corresponding path program 14 times [2021-10-21 19:16:01,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:01,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007440110] [2021-10-21 19:16:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:01,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:02,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:02,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007440110] [2021-10-21 19:16:02,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007440110] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:02,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666526975] [2021-10-21 19:16:02,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:16:02,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:02,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:02,035 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:02,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-21 19:16:02,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:16:02,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:02,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:16:02,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:02,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666526975] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:02,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:02,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-10-21 19:16:02,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166719530] [2021-10-21 19:16:02,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 19:16:02,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:02,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:16:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:16:02,765 INFO L87 Difference]: Start difference. First operand 450 states and 518 transitions. Second operand has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:02,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:02,913 INFO L93 Difference]: Finished difference Result 869 states and 1008 transitions. [2021-10-21 19:16:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:16:02,914 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-10-21 19:16:02,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:02,918 INFO L225 Difference]: With dead ends: 869 [2021-10-21 19:16:02,918 INFO L226 Difference]: Without dead ends: 868 [2021-10-21 19:16:02,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:16:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-10-21 19:16:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 477. [2021-10-21 19:16:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.1578947368421053) internal successors, (550), 476 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 550 transitions. [2021-10-21 19:16:02,947 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 550 transitions. Word has length 94 [2021-10-21 19:16:02,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:02,947 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 550 transitions. [2021-10-21 19:16:02,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 550 transitions. [2021-10-21 19:16:02,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-10-21 19:16:02,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:02,949 INFO L512 BasicCegarLoop]: trace histogram [16, 15, 15, 12, 12, 12, 4, 4, 4, 1, 1] [2021-10-21 19:16:02,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:03,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-21 19:16:03,167 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:03,167 INFO L82 PathProgramCache]: Analyzing trace with hash -400236045, now seen corresponding path program 8 times [2021-10-21 19:16:03,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:03,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581206381] [2021-10-21 19:16:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:03,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 162 proven. 420 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-21 19:16:03,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:03,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581206381] [2021-10-21 19:16:03,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581206381] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:03,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336796069] [2021-10-21 19:16:03,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:16:03,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:03,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:03,326 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:03,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-21 19:16:03,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:16:03,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:03,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:16:03,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 162 proven. 420 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-21 19:16:03,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336796069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:03,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:03,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-21 19:16:03,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333640149] [2021-10-21 19:16:03,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:16:03,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:03,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:16:03,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:16:03,995 INFO L87 Difference]: Start difference. First operand 477 states and 550 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:04,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:04,064 INFO L93 Difference]: Finished difference Result 895 states and 1042 transitions. [2021-10-21 19:16:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:16:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-10-21 19:16:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:04,068 INFO L225 Difference]: With dead ends: 895 [2021-10-21 19:16:04,068 INFO L226 Difference]: Without dead ends: 487 [2021-10-21 19:16:04,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.1ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:16:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-10-21 19:16:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 483. [2021-10-21 19:16:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 481 states have (on average 1.155925155925156) internal successors, (556), 482 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 556 transitions. [2021-10-21 19:16:04,087 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 556 transitions. Word has length 96 [2021-10-21 19:16:04,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:04,088 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 556 transitions. [2021-10-21 19:16:04,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:04,088 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 556 transitions. [2021-10-21 19:16:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-21 19:16:04,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:04,089 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1] [2021-10-21 19:16:04,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:04,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-21 19:16:04,315 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:04,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:04,315 INFO L82 PathProgramCache]: Analyzing trace with hash -143151973, now seen corresponding path program 15 times [2021-10-21 19:16:04,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:04,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054329070] [2021-10-21 19:16:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:04,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:04,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:04,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054329070] [2021-10-21 19:16:04,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054329070] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:04,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559091782] [2021-10-21 19:16:04,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:16:04,501 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:04,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:04,505 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:04,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-21 19:16:04,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-10-21 19:16:04,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:04,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:16:04,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:05,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559091782] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:05,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:05,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-21 19:16:05,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134542848] [2021-10-21 19:16:05,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 19:16:05,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:05,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 19:16:05,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:16:05,173 INFO L87 Difference]: Start difference. First operand 483 states and 556 transitions. Second operand has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:05,318 INFO L93 Difference]: Finished difference Result 931 states and 1080 transitions. [2021-10-21 19:16:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 19:16:05,319 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-21 19:16:05,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:05,324 INFO L225 Difference]: With dead ends: 931 [2021-10-21 19:16:05,324 INFO L226 Difference]: Without dead ends: 930 [2021-10-21 19:16:05,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:16:05,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-10-21 19:16:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 510. [2021-10-21 19:16:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 508 states have (on average 1.1574803149606299) internal successors, (588), 509 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 588 transitions. [2021-10-21 19:16:05,348 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 588 transitions. Word has length 100 [2021-10-21 19:16:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:05,348 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 588 transitions. [2021-10-21 19:16:05,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:05,362 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 588 transitions. [2021-10-21 19:16:05,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-21 19:16:05,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:05,364 INFO L512 BasicCegarLoop]: trace histogram [17, 16, 16, 13, 13, 13, 4, 4, 4, 1, 1] [2021-10-21 19:16:05,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:05,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-21 19:16:05,595 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:05,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:05,595 INFO L82 PathProgramCache]: Analyzing trace with hash 723626156, now seen corresponding path program 9 times [2021-10-21 19:16:05,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:05,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400734165] [2021-10-21 19:16:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:05,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 175 proven. 494 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-21 19:16:05,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:05,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400734165] [2021-10-21 19:16:05,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400734165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:05,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066142913] [2021-10-21 19:16:05,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:16:05,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:05,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:05,778 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:05,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-21 19:16:06,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-21 19:16:06,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:06,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:16:06,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 285 proven. 59 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2021-10-21 19:16:06,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066142913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:06,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:06,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 22 [2021-10-21 19:16:06,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142336808] [2021-10-21 19:16:06,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 19:16:06,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:06,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 19:16:06,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:16:06,704 INFO L87 Difference]: Start difference. First operand 510 states and 588 transitions. Second operand has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:06,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:06,803 INFO L93 Difference]: Finished difference Result 1125 states and 1335 transitions. [2021-10-21 19:16:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:16:06,804 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-21 19:16:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:06,808 INFO L225 Difference]: With dead ends: 1125 [2021-10-21 19:16:06,808 INFO L226 Difference]: Without dead ends: 690 [2021-10-21 19:16:06,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 182.9ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:16:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-10-21 19:16:06,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 678. [2021-10-21 19:16:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 676 states have (on average 1.1553254437869822) internal successors, (781), 677 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:06,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 781 transitions. [2021-10-21 19:16:06,834 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 781 transitions. Word has length 102 [2021-10-21 19:16:06,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:06,834 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 781 transitions. [2021-10-21 19:16:06,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:06,835 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 781 transitions. [2021-10-21 19:16:06,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-21 19:16:06,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:06,836 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1] [2021-10-21 19:16:06,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-10-21 19:16:07,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:07,059 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:07,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1288728276, now seen corresponding path program 16 times [2021-10-21 19:16:07,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:07,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027132484] [2021-10-21 19:16:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:07,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:07,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:07,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027132484] [2021-10-21 19:16:07,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027132484] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:07,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39200126] [2021-10-21 19:16:07,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:16:07,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:07,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:07,295 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:07,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-21 19:16:07,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:16:07,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:07,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:16:07,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:08,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39200126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:08,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:08,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-21 19:16:08,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253281537] [2021-10-21 19:16:08,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-21 19:16:08,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:08,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-21 19:16:08,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:16:08,195 INFO L87 Difference]: Start difference. First operand 678 states and 781 transitions. Second operand has 20 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:08,365 INFO L93 Difference]: Finished difference Result 1317 states and 1528 transitions. [2021-10-21 19:16:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 19:16:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-10-21 19:16:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:08,372 INFO L225 Difference]: With dead ends: 1317 [2021-10-21 19:16:08,372 INFO L226 Difference]: Without dead ends: 1316 [2021-10-21 19:16:08,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 156.3ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:16:08,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-10-21 19:16:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 717. [2021-10-21 19:16:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 715 states have (on average 1.1566433566433567) internal successors, (827), 716 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 827 transitions. [2021-10-21 19:16:08,414 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 827 transitions. Word has length 106 [2021-10-21 19:16:08,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:08,414 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 827 transitions. [2021-10-21 19:16:08,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:08,414 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 827 transitions. [2021-10-21 19:16:08,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-21 19:16:08,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:08,416 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1] [2021-10-21 19:16:08,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:08,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:08,633 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:08,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2142051763, now seen corresponding path program 17 times [2021-10-21 19:16:08,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:08,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765838813] [2021-10-21 19:16:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:08,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:08,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:08,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765838813] [2021-10-21 19:16:08,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765838813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:08,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475102555] [2021-10-21 19:16:08,848 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:16:08,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:08,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:08,849 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:08,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-21 19:16:09,350 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-10-21 19:16:09,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:09,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:16:09,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:09,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475102555] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:09,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:09,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-21 19:16:09,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083627953] [2021-10-21 19:16:09,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:16:09,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:16:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:16:09,671 INFO L87 Difference]: Start difference. First operand 717 states and 827 transitions. Second operand has 21 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:09,848 INFO L93 Difference]: Finished difference Result 1397 states and 1622 transitions. [2021-10-21 19:16:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 19:16:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-10-21 19:16:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:09,855 INFO L225 Difference]: With dead ends: 1397 [2021-10-21 19:16:09,856 INFO L226 Difference]: Without dead ends: 1396 [2021-10-21 19:16:09,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 153.7ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:16:09,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-10-21 19:16:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 756. [2021-10-21 19:16:09,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 754 states have (on average 1.1578249336870026) internal successors, (873), 755 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 873 transitions. [2021-10-21 19:16:09,887 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 873 transitions. Word has length 112 [2021-10-21 19:16:09,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:09,887 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 873 transitions. [2021-10-21 19:16:09,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:09,888 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 873 transitions. [2021-10-21 19:16:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-10-21 19:16:09,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:09,889 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1] [2021-10-21 19:16:09,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:10,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-21 19:16:10,102 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:10,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:10,103 INFO L82 PathProgramCache]: Analyzing trace with hash -138078458, now seen corresponding path program 18 times [2021-10-21 19:16:10,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:10,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531049754] [2021-10-21 19:16:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:10,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:10,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:10,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531049754] [2021-10-21 19:16:10,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531049754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:10,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462750984] [2021-10-21 19:16:10,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:16:10,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:10,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:10,348 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:10,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-21 19:16:11,061 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2021-10-21 19:16:11,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:11,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:16:11,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:11,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462750984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:11,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:11,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-10-21 19:16:11,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588595977] [2021-10-21 19:16:11,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 19:16:11,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:11,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 19:16:11,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:16:11,343 INFO L87 Difference]: Start difference. First operand 756 states and 873 transitions. Second operand has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:11,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:11,542 INFO L93 Difference]: Finished difference Result 1477 states and 1716 transitions. [2021-10-21 19:16:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:16:11,543 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-10-21 19:16:11,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:11,570 INFO L225 Difference]: With dead ends: 1477 [2021-10-21 19:16:11,571 INFO L226 Difference]: Without dead ends: 1476 [2021-10-21 19:16:11,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 172.9ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:16:11,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-10-21 19:16:11,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 795. [2021-10-21 19:16:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 793 states have (on average 1.158890290037831) internal successors, (919), 794 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 919 transitions. [2021-10-21 19:16:11,666 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 919 transitions. Word has length 118 [2021-10-21 19:16:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:11,667 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 919 transitions. [2021-10-21 19:16:11,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 919 transitions. [2021-10-21 19:16:11,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-21 19:16:11,669 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:11,669 INFO L512 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1] [2021-10-21 19:16:11,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:11,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-21 19:16:11,883 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:11,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:11,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1876878081, now seen corresponding path program 19 times [2021-10-21 19:16:11,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:11,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542688204] [2021-10-21 19:16:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:11,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:12,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:12,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542688204] [2021-10-21 19:16:12,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542688204] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:12,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579430902] [2021-10-21 19:16:12,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:16:12,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:12,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:12,149 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:12,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-21 19:16:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:12,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:16:12,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:13,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579430902] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:13,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:13,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-10-21 19:16:13,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634379190] [2021-10-21 19:16:13,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 19:16:13,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 19:16:13,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:16:13,065 INFO L87 Difference]: Start difference. First operand 795 states and 919 transitions. Second operand has 23 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:13,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:13,244 INFO L93 Difference]: Finished difference Result 1557 states and 1810 transitions. [2021-10-21 19:16:13,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-21 19:16:13,244 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-10-21 19:16:13,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:13,253 INFO L225 Difference]: With dead ends: 1557 [2021-10-21 19:16:13,253 INFO L226 Difference]: Without dead ends: 1556 [2021-10-21 19:16:13,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 183.3ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:16:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2021-10-21 19:16:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 834. [2021-10-21 19:16:13,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.1598557692307692) internal successors, (965), 833 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:13,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 965 transitions. [2021-10-21 19:16:13,287 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 965 transitions. Word has length 124 [2021-10-21 19:16:13,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:13,287 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 965 transitions. [2021-10-21 19:16:13,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:13,287 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 965 transitions. [2021-10-21 19:16:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-10-21 19:16:13,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:13,289 INFO L512 BasicCegarLoop]: trace histogram [21, 20, 20, 15, 15, 15, 6, 6, 6, 1, 1] [2021-10-21 19:16:13,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:13,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:13,503 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:13,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:13,503 INFO L82 PathProgramCache]: Analyzing trace with hash -637299836, now seen corresponding path program 10 times [2021-10-21 19:16:13,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:13,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945805556] [2021-10-21 19:16:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:13,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 325 proven. 660 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-21 19:16:13,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:13,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945805556] [2021-10-21 19:16:13,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945805556] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:13,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928401874] [2021-10-21 19:16:13,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:16:13,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:13,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:13,727 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:13,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-21 19:16:14,328 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:16:14,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:14,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:16:14,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 325 proven. 660 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-21 19:16:14,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928401874] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:14,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:14,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-21 19:16:14,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800391704] [2021-10-21 19:16:14,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 19:16:14,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:14,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:16:14,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:16:14,648 INFO L87 Difference]: Start difference. First operand 834 states and 965 transitions. Second operand has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:14,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:14,701 INFO L93 Difference]: Finished difference Result 1591 states and 1854 transitions. [2021-10-21 19:16:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:16:14,709 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-10-21 19:16:14,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:14,713 INFO L225 Difference]: With dead ends: 1591 [2021-10-21 19:16:14,714 INFO L226 Difference]: Without dead ends: 844 [2021-10-21 19:16:14,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 154.1ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:16:14,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-10-21 19:16:14,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 840. [2021-10-21 19:16:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.1587112171837708) internal successors, (971), 839 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 971 transitions. [2021-10-21 19:16:14,759 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 971 transitions. Word has length 126 [2021-10-21 19:16:14,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:14,759 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 971 transitions. [2021-10-21 19:16:14,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:14,760 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 971 transitions. [2021-10-21 19:16:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-10-21 19:16:14,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:14,761 INFO L512 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1] [2021-10-21 19:16:14,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:14,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-21 19:16:14,983 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:14,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:14,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1721041976, now seen corresponding path program 20 times [2021-10-21 19:16:14,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:14,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179729738] [2021-10-21 19:16:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:14,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:15,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:15,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179729738] [2021-10-21 19:16:15,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179729738] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:15,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425801918] [2021-10-21 19:16:15,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:16:15,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:15,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:15,274 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:15,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-21 19:16:15,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:16:15,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:15,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:16:15,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:16,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425801918] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:16,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:16,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-21 19:16:16,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853880826] [2021-10-21 19:16:16,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-21 19:16:16,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:16,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-21 19:16:16,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:16:16,239 INFO L87 Difference]: Start difference. First operand 840 states and 971 transitions. Second operand has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:16,417 INFO L93 Difference]: Finished difference Result 1643 states and 1910 transitions. [2021-10-21 19:16:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-21 19:16:16,417 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-10-21 19:16:16,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:16,425 INFO L225 Difference]: With dead ends: 1643 [2021-10-21 19:16:16,425 INFO L226 Difference]: Without dead ends: 1642 [2021-10-21 19:16:16,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 197.2ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-10-21 19:16:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-10-21 19:16:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 879. [2021-10-21 19:16:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.1596351197263397) internal successors, (1017), 878 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1017 transitions. [2021-10-21 19:16:16,484 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1017 transitions. Word has length 130 [2021-10-21 19:16:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:16,484 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 1017 transitions. [2021-10-21 19:16:16,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:16,485 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1017 transitions. [2021-10-21 19:16:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-21 19:16:16,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:16,486 INFO L512 BasicCegarLoop]: trace histogram [22, 21, 21, 16, 16, 16, 6, 6, 6, 1, 1] [2021-10-21 19:16:16,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:16,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-21 19:16:16,695 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:16,695 INFO L82 PathProgramCache]: Analyzing trace with hash -484798339, now seen corresponding path program 11 times [2021-10-21 19:16:16,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:16,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138139623] [2021-10-21 19:16:16,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:16,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 346 proven. 752 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-21 19:16:16,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:16,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138139623] [2021-10-21 19:16:16,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138139623] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:16,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275427986] [2021-10-21 19:16:16,883 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:16:16,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:16,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:16,884 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:16,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-21 19:16:17,563 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-21 19:16:17,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:17,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:16:17,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 346 proven. 752 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-21 19:16:17,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275427986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:17,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:17,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-21 19:16:17,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774367601] [2021-10-21 19:16:17,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 19:16:17,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:17,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 19:16:17,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:16:17,959 INFO L87 Difference]: Start difference. First operand 879 states and 1017 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:18,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:18,034 INFO L93 Difference]: Finished difference Result 1675 states and 1952 transitions. [2021-10-21 19:16:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 19:16:18,034 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-10-21 19:16:18,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:18,039 INFO L225 Difference]: With dead ends: 1675 [2021-10-21 19:16:18,039 INFO L226 Difference]: Without dead ends: 889 [2021-10-21 19:16:18,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:16:18,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-10-21 19:16:18,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2021-10-21 19:16:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.1585503963759909) internal successors, (1023), 884 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1023 transitions. [2021-10-21 19:16:18,076 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1023 transitions. Word has length 132 [2021-10-21 19:16:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:18,077 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1023 transitions. [2021-10-21 19:16:18,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1023 transitions. [2021-10-21 19:16:18,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-10-21 19:16:18,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:18,078 INFO L512 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1] [2021-10-21 19:16:18,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:18,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-21 19:16:18,295 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:18,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:18,295 INFO L82 PathProgramCache]: Analyzing trace with hash -511517519, now seen corresponding path program 21 times [2021-10-21 19:16:18,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:18,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45653047] [2021-10-21 19:16:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:18,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:18,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:18,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45653047] [2021-10-21 19:16:18,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45653047] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:18,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670814197] [2021-10-21 19:16:18,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:16:18,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:18,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:18,609 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:18,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-21 19:16:19,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2021-10-21 19:16:19,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:19,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-21 19:16:19,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:19,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670814197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:19,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:19,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-10-21 19:16:19,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163617126] [2021-10-21 19:16:19,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-21 19:16:19,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-21 19:16:19,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-21 19:16:19,699 INFO L87 Difference]: Start difference. First operand 885 states and 1023 transitions. Second operand has 25 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:19,894 INFO L93 Difference]: Finished difference Result 1729 states and 2010 transitions. [2021-10-21 19:16:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-21 19:16:19,895 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-10-21 19:16:19,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:19,903 INFO L225 Difference]: With dead ends: 1729 [2021-10-21 19:16:19,904 INFO L226 Difference]: Without dead ends: 1728 [2021-10-21 19:16:19,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 200.2ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-10-21 19:16:19,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2021-10-21 19:16:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 924. [2021-10-21 19:16:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 922 states have (on average 1.1594360086767896) internal successors, (1069), 923 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1069 transitions. [2021-10-21 19:16:19,947 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1069 transitions. Word has length 136 [2021-10-21 19:16:19,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:19,947 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1069 transitions. [2021-10-21 19:16:19,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1069 transitions. [2021-10-21 19:16:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-21 19:16:19,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:19,949 INFO L512 BasicCegarLoop]: trace histogram [23, 22, 22, 17, 17, 17, 6, 6, 6, 1, 1] [2021-10-21 19:16:19,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:20,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-21 19:16:20,175 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:20,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:20,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1509174966, now seen corresponding path program 12 times [2021-10-21 19:16:20,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:20,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228621258] [2021-10-21 19:16:20,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:20,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 367 proven. 850 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-21 19:16:20,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:20,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228621258] [2021-10-21 19:16:20,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228621258] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:20,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301787292] [2021-10-21 19:16:20,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:16:20,393 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:20,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:20,394 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:20,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-21 19:16:21,120 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-21 19:16:21,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:21,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:16:21,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 509 proven. 123 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2021-10-21 19:16:21,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301787292] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:21,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:21,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 28 [2021-10-21 19:16:21,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145131174] [2021-10-21 19:16:21,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-21 19:16:21,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:21,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-21 19:16:21,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:16:21,564 INFO L87 Difference]: Start difference. First operand 924 states and 1069 transitions. Second operand has 28 states, 28 states have (on average 5.892857142857143) internal successors, (165), 28 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:21,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:21,679 INFO L93 Difference]: Finished difference Result 1981 states and 2341 transitions. [2021-10-21 19:16:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-21 19:16:21,680 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.892857142857143) internal successors, (165), 28 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-10-21 19:16:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:21,684 INFO L225 Difference]: With dead ends: 1981 [2021-10-21 19:16:21,684 INFO L226 Difference]: Without dead ends: 1156 [2021-10-21 19:16:21,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 287.8ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:16:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-10-21 19:16:21,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1140. [2021-10-21 19:16:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1138 states have (on average 1.1581722319859402) internal successors, (1318), 1139 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1318 transitions. [2021-10-21 19:16:21,714 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1318 transitions. Word has length 138 [2021-10-21 19:16:21,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:21,715 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1318 transitions. [2021-10-21 19:16:21,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.892857142857143) internal successors, (165), 28 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1318 transitions. [2021-10-21 19:16:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-21 19:16:21,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:21,717 INFO L512 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1] [2021-10-21 19:16:21,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:21,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-21 19:16:21,943 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:21,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:21,943 INFO L82 PathProgramCache]: Analyzing trace with hash -109005206, now seen corresponding path program 22 times [2021-10-21 19:16:21,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:21,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313014660] [2021-10-21 19:16:21,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:21,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:22,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:22,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313014660] [2021-10-21 19:16:22,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313014660] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:22,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828047788] [2021-10-21 19:16:22,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:16:22,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:22,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:22,294 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:22,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-21 19:16:23,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:16:23,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:23,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 19:16:23,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:23,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828047788] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:23,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:23,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-10-21 19:16:23,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97999534] [2021-10-21 19:16:23,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-21 19:16:23,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:23,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-21 19:16:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-21 19:16:23,432 INFO L87 Difference]: Start difference. First operand 1140 states and 1318 transitions. Second operand has 26 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:23,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:23,635 INFO L93 Difference]: Finished difference Result 2235 states and 2598 transitions. [2021-10-21 19:16:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-21 19:16:23,635 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-10-21 19:16:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:23,643 INFO L225 Difference]: With dead ends: 2235 [2021-10-21 19:16:23,643 INFO L226 Difference]: Without dead ends: 2234 [2021-10-21 19:16:23,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 267.3ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-21 19:16:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-10-21 19:16:23,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1191. [2021-10-21 19:16:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1189 states have (on average 1.1589571068124473) internal successors, (1378), 1190 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1378 transitions. [2021-10-21 19:16:23,680 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1378 transitions. Word has length 142 [2021-10-21 19:16:23,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:23,680 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1378 transitions. [2021-10-21 19:16:23,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1378 transitions. [2021-10-21 19:16:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-21 19:16:23,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:23,682 INFO L512 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1] [2021-10-21 19:16:23,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-21 19:16:23,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-21 19:16:23,911 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:23,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:23,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1034378909, now seen corresponding path program 23 times [2021-10-21 19:16:23,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:23,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141403517] [2021-10-21 19:16:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:23,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:24,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:24,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:24,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141403517] [2021-10-21 19:16:24,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141403517] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:24,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192891562] [2021-10-21 19:16:24,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:16:24,290 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:24,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:24,295 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:24,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-21 19:16:25,160 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-10-21 19:16:25,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:25,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-21 19:16:25,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:25,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192891562] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:25,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:25,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-10-21 19:16:25,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940873378] [2021-10-21 19:16:25,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-21 19:16:25,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:25,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-21 19:16:25,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-21 19:16:25,603 INFO L87 Difference]: Start difference. First operand 1191 states and 1378 transitions. Second operand has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:25,799 INFO L93 Difference]: Finished difference Result 2339 states and 2720 transitions. [2021-10-21 19:16:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-21 19:16:25,799 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-10-21 19:16:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:25,810 INFO L225 Difference]: With dead ends: 2339 [2021-10-21 19:16:25,810 INFO L226 Difference]: Without dead ends: 2338 [2021-10-21 19:16:25,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 299.0ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-21 19:16:25,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2021-10-21 19:16:25,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1242. [2021-10-21 19:16:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1240 states have (on average 1.1596774193548387) internal successors, (1438), 1241 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1438 transitions. [2021-10-21 19:16:25,849 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1438 transitions. Word has length 148 [2021-10-21 19:16:25,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:25,850 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 1438 transitions. [2021-10-21 19:16:25,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1438 transitions. [2021-10-21 19:16:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-21 19:16:25,851 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:25,851 INFO L512 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1] [2021-10-21 19:16:25,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:26,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:26,067 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:26,067 INFO L82 PathProgramCache]: Analyzing trace with hash 872983964, now seen corresponding path program 24 times [2021-10-21 19:16:26,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:26,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739998637] [2021-10-21 19:16:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:26,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:26,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:26,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739998637] [2021-10-21 19:16:26,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739998637] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:26,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021388990] [2021-10-21 19:16:26,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:16:26,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:26,443 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:26,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-21 19:16:27,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2021-10-21 19:16:27,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:27,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 19:16:27,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:27,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021388990] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:27,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:27,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-10-21 19:16:27,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132443541] [2021-10-21 19:16:27,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-21 19:16:27,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:27,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-21 19:16:27,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:16:27,752 INFO L87 Difference]: Start difference. First operand 1242 states and 1438 transitions. Second operand has 28 states, 27 states have (on average 5.703703703703703) internal successors, (154), 27 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:27,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:27,953 INFO L93 Difference]: Finished difference Result 2443 states and 2842 transitions. [2021-10-21 19:16:27,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-21 19:16:27,953 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.703703703703703) internal successors, (154), 27 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-10-21 19:16:27,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:27,964 INFO L225 Difference]: With dead ends: 2443 [2021-10-21 19:16:27,964 INFO L226 Difference]: Without dead ends: 2442 [2021-10-21 19:16:27,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 290.0ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:16:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-10-21 19:16:28,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1293. [2021-10-21 19:16:28,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1291 states have (on average 1.1603408210689388) internal successors, (1498), 1292 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:28,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1498 transitions. [2021-10-21 19:16:28,007 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1498 transitions. Word has length 154 [2021-10-21 19:16:28,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:28,008 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 1498 transitions. [2021-10-21 19:16:28,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.703703703703703) internal successors, (154), 27 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:28,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1498 transitions. [2021-10-21 19:16:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-10-21 19:16:28,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:28,010 INFO L512 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1] [2021-10-21 19:16:28,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:28,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-10-21 19:16:28,223 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:28,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:28,223 INFO L82 PathProgramCache]: Analyzing trace with hash 868412181, now seen corresponding path program 25 times [2021-10-21 19:16:28,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:28,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571802673] [2021-10-21 19:16:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:28,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:28,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:28,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571802673] [2021-10-21 19:16:28,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571802673] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:28,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275095319] [2021-10-21 19:16:28,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:16:28,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:28,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:28,604 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:28,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-21 19:16:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:29,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:16:29,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:29,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275095319] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:29,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:29,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-10-21 19:16:29,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175958890] [2021-10-21 19:16:29,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-21 19:16:29,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:29,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-21 19:16:29,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-21 19:16:29,946 INFO L87 Difference]: Start difference. First operand 1293 states and 1498 transitions. Second operand has 29 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:30,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:30,166 INFO L93 Difference]: Finished difference Result 2547 states and 2964 transitions. [2021-10-21 19:16:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-21 19:16:30,167 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-10-21 19:16:30,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:30,173 INFO L225 Difference]: With dead ends: 2547 [2021-10-21 19:16:30,173 INFO L226 Difference]: Without dead ends: 2546 [2021-10-21 19:16:30,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 295.9ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-10-21 19:16:30,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-10-21 19:16:30,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1344. [2021-10-21 19:16:30,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1342 states have (on average 1.1609538002980626) internal successors, (1558), 1343 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:30,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1558 transitions. [2021-10-21 19:16:30,209 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1558 transitions. Word has length 160 [2021-10-21 19:16:30,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:30,209 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 1558 transitions. [2021-10-21 19:16:30,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:30,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1558 transitions. [2021-10-21 19:16:30,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-10-21 19:16:30,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:30,211 INFO L512 BasicCegarLoop]: trace histogram [27, 26, 26, 19, 19, 19, 8, 8, 8, 1, 1] [2021-10-21 19:16:30,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:30,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:30,426 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:30,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:30,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1355830898, now seen corresponding path program 13 times [2021-10-21 19:16:30,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:30,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891678914] [2021-10-21 19:16:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:30,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1776 backedges. 565 proven. 1064 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-21 19:16:30,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:30,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891678914] [2021-10-21 19:16:30,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891678914] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:30,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827131720] [2021-10-21 19:16:30,687 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:16:30,687 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:30,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:30,688 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:30,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-21 19:16:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:31,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:16:31,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1776 backedges. 565 proven. 1064 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-21 19:16:31,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827131720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:31,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:31,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-10-21 19:16:31,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360373911] [2021-10-21 19:16:31,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 19:16:31,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:31,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 19:16:31,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:16:31,997 INFO L87 Difference]: Start difference. First operand 1344 states and 1558 transitions. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 21 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:32,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:32,118 INFO L93 Difference]: Finished difference Result 2587 states and 3016 transitions. [2021-10-21 19:16:32,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:16:32,118 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 21 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-10-21 19:16:32,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:32,121 INFO L225 Difference]: With dead ends: 2587 [2021-10-21 19:16:32,121 INFO L226 Difference]: Without dead ends: 1354 [2021-10-21 19:16:32,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 170.5ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:16:32,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-10-21 19:16:32,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1350. [2021-10-21 19:16:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1348 states have (on average 1.1602373887240356) internal successors, (1564), 1349 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1564 transitions. [2021-10-21 19:16:32,153 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1564 transitions. Word has length 162 [2021-10-21 19:16:32,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:32,154 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 1564 transitions. [2021-10-21 19:16:32,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 21 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1564 transitions. [2021-10-21 19:16:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-21 19:16:32,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:32,156 INFO L512 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1] [2021-10-21 19:16:32,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:32,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-21 19:16:32,383 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:32,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:32,383 INFO L82 PathProgramCache]: Analyzing trace with hash -588420658, now seen corresponding path program 26 times [2021-10-21 19:16:32,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:32,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172367017] [2021-10-21 19:16:32,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:32,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:32,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:32,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172367017] [2021-10-21 19:16:32,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172367017] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:32,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72228242] [2021-10-21 19:16:32,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:16:32,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:32,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:32,811 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:32,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-21 19:16:33,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:16:33,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:33,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-21 19:16:33,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:34,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72228242] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:34,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:34,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-10-21 19:16:34,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731938262] [2021-10-21 19:16:34,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-21 19:16:34,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-21 19:16:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-21 19:16:34,231 INFO L87 Difference]: Start difference. First operand 1350 states and 1564 transitions. Second operand has 30 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:34,456 INFO L93 Difference]: Finished difference Result 2657 states and 3092 transitions. [2021-10-21 19:16:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-21 19:16:34,456 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-10-21 19:16:34,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:34,459 INFO L225 Difference]: With dead ends: 2657 [2021-10-21 19:16:34,459 INFO L226 Difference]: Without dead ends: 2656 [2021-10-21 19:16:34,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 331.6ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-21 19:16:34,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2021-10-21 19:16:34,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 1401. [2021-10-21 19:16:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1399 states have (on average 1.1608291636883488) internal successors, (1624), 1400 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1624 transitions. [2021-10-21 19:16:34,495 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1624 transitions. Word has length 166 [2021-10-21 19:16:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:34,496 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 1624 transitions. [2021-10-21 19:16:34,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1624 transitions. [2021-10-21 19:16:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-10-21 19:16:34,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:34,499 INFO L512 BasicCegarLoop]: trace histogram [28, 27, 27, 20, 20, 20, 8, 8, 8, 1, 1] [2021-10-21 19:16:34,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:34,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-21 19:16:34,715 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:34,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:34,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1212850681, now seen corresponding path program 14 times [2021-10-21 19:16:34,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:34,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172606479] [2021-10-21 19:16:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:34,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1921 backedges. 594 proven. 1180 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-21 19:16:35,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:35,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172606479] [2021-10-21 19:16:35,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172606479] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:35,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632537650] [2021-10-21 19:16:35,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:16:35,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:35,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:35,007 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:35,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-21 19:16:36,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:16:36,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:36,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:16:36,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1921 backedges. 594 proven. 1180 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-21 19:16:36,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632537650] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:36,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:36,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-10-21 19:16:36,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912232417] [2021-10-21 19:16:36,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-21 19:16:36,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-21 19:16:36,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:16:36,488 INFO L87 Difference]: Start difference. First operand 1401 states and 1624 transitions. Second operand has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:36,584 INFO L93 Difference]: Finished difference Result 2695 states and 3142 transitions. [2021-10-21 19:16:36,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-21 19:16:36,585 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-10-21 19:16:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:36,588 INFO L225 Difference]: With dead ends: 2695 [2021-10-21 19:16:36,588 INFO L226 Difference]: Without dead ends: 1411 [2021-10-21 19:16:36,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 195.7ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-10-21 19:16:36,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2021-10-21 19:16:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1407. [2021-10-21 19:16:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1405 states have (on average 1.1601423487544484) internal successors, (1630), 1406 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1630 transitions. [2021-10-21 19:16:36,622 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1630 transitions. Word has length 168 [2021-10-21 19:16:36,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:36,623 INFO L470 AbstractCegarLoop]: Abstraction has 1407 states and 1630 transitions. [2021-10-21 19:16:36,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:36,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1630 transitions. [2021-10-21 19:16:36,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-10-21 19:16:36,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:36,625 INFO L512 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1] [2021-10-21 19:16:36,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:36,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:36,847 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:36,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:36,847 INFO L82 PathProgramCache]: Analyzing trace with hash 170015175, now seen corresponding path program 27 times [2021-10-21 19:16:36,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:36,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918032731] [2021-10-21 19:16:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:36,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:37,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:37,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918032731] [2021-10-21 19:16:37,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918032731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:37,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058090618] [2021-10-21 19:16:37,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:16:37,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:37,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:37,313 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:37,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-21 19:16:38,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2021-10-21 19:16:38,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:38,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 19:16:38,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:38,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058090618] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:38,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:38,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-10-21 19:16:38,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919627356] [2021-10-21 19:16:38,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-21 19:16:38,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:38,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-21 19:16:38,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-21 19:16:38,805 INFO L87 Difference]: Start difference. First operand 1407 states and 1630 transitions. Second operand has 31 states, 30 states have (on average 5.733333333333333) internal successors, (172), 30 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:39,057 INFO L93 Difference]: Finished difference Result 2767 states and 3220 transitions. [2021-10-21 19:16:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-21 19:16:39,057 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.733333333333333) internal successors, (172), 30 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-10-21 19:16:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:39,062 INFO L225 Difference]: With dead ends: 2767 [2021-10-21 19:16:39,062 INFO L226 Difference]: Without dead ends: 2766 [2021-10-21 19:16:39,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 375.6ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-21 19:16:39,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-10-21 19:16:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 1458. [2021-10-21 19:16:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1456 states have (on average 1.1607142857142858) internal successors, (1690), 1457 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1690 transitions. [2021-10-21 19:16:39,099 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1690 transitions. Word has length 172 [2021-10-21 19:16:39,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:39,099 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 1690 transitions. [2021-10-21 19:16:39,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.733333333333333) internal successors, (172), 30 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:39,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1690 transitions. [2021-10-21 19:16:39,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-10-21 19:16:39,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:39,102 INFO L512 BasicCegarLoop]: trace histogram [29, 28, 28, 21, 21, 21, 8, 8, 8, 1, 1] [2021-10-21 19:16:39,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:39,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-10-21 19:16:39,321 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:39,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:39,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1794511808, now seen corresponding path program 15 times [2021-10-21 19:16:39,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:39,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619626216] [2021-10-21 19:16:39,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:39,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 623 proven. 1302 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-10-21 19:16:39,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:39,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619626216] [2021-10-21 19:16:39,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619626216] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:39,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042272778] [2021-10-21 19:16:39,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:16:39,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:39,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:39,610 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:39,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-21 19:16:40,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-21 19:16:40,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:40,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:16:40,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 797 proven. 211 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2021-10-21 19:16:41,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042272778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:41,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:41,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 34 [2021-10-21 19:16:41,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528396964] [2021-10-21 19:16:41,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-21 19:16:41,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:41,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-21 19:16:41,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 19:16:41,464 INFO L87 Difference]: Start difference. First operand 1458 states and 1690 transitions. Second operand has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:41,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:41,642 INFO L93 Difference]: Finished difference Result 3077 states and 3627 transitions. [2021-10-21 19:16:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-21 19:16:41,643 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-10-21 19:16:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:41,646 INFO L225 Difference]: With dead ends: 3077 [2021-10-21 19:16:41,646 INFO L226 Difference]: Without dead ends: 1742 [2021-10-21 19:16:41,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 434.0ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 19:16:41,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-10-21 19:16:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1722. [2021-10-21 19:16:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1720 states have (on average 1.1598837209302326) internal successors, (1995), 1721 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 1995 transitions. [2021-10-21 19:16:41,730 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 1995 transitions. Word has length 174 [2021-10-21 19:16:41,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:41,731 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 1995 transitions. [2021-10-21 19:16:41,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 1995 transitions. [2021-10-21 19:16:41,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-21 19:16:41,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:41,732 INFO L512 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1] [2021-10-21 19:16:41,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:41,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-10-21 19:16:41,943 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:41,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:41,943 INFO L82 PathProgramCache]: Analyzing trace with hash 506424064, now seen corresponding path program 28 times [2021-10-21 19:16:41,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:41,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59153818] [2021-10-21 19:16:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:41,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:42,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:42,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59153818] [2021-10-21 19:16:42,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59153818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:42,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169417943] [2021-10-21 19:16:42,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:16:42,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:42,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:42,366 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:42,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-21 19:16:43,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:16:43,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:43,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-21 19:16:43,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:44,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169417943] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:44,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:44,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-10-21 19:16:44,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299058434] [2021-10-21 19:16:44,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-21 19:16:44,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:44,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-21 19:16:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-21 19:16:44,010 INFO L87 Difference]: Start difference. First operand 1722 states and 1995 transitions. Second operand has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:44,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:44,213 INFO L93 Difference]: Finished difference Result 3393 states and 3948 transitions. [2021-10-21 19:16:44,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-21 19:16:44,214 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-10-21 19:16:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:44,218 INFO L225 Difference]: With dead ends: 3393 [2021-10-21 19:16:44,218 INFO L226 Difference]: Without dead ends: 3392 [2021-10-21 19:16:44,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 332.4ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-10-21 19:16:44,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2021-10-21 19:16:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 1785. [2021-10-21 19:16:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1783 states have (on average 1.1604038137969714) internal successors, (2069), 1784 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 2069 transitions. [2021-10-21 19:16:44,254 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 2069 transitions. Word has length 178 [2021-10-21 19:16:44,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:44,255 INFO L470 AbstractCegarLoop]: Abstraction has 1785 states and 2069 transitions. [2021-10-21 19:16:44,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:44,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 2069 transitions. [2021-10-21 19:16:44,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-10-21 19:16:44,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:44,257 INFO L512 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1] [2021-10-21 19:16:44,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-21 19:16:44,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-10-21 19:16:44,471 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:44,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:44,471 INFO L82 PathProgramCache]: Analyzing trace with hash 219614585, now seen corresponding path program 29 times [2021-10-21 19:16:44,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:44,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821407671] [2021-10-21 19:16:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:44,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:44,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:44,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821407671] [2021-10-21 19:16:44,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821407671] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:44,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760954595] [2021-10-21 19:16:44,986 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:16:44,986 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:44,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:44,991 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:45,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-21 19:16:46,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-10-21 19:16:46,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:46,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-21 19:16:46,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:46,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760954595] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:46,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:46,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-10-21 19:16:46,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946660827] [2021-10-21 19:16:46,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-10-21 19:16:46,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:46,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-10-21 19:16:46,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-21 19:16:46,760 INFO L87 Difference]: Start difference. First operand 1785 states and 2069 transitions. Second operand has 33 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:47,020 INFO L93 Difference]: Finished difference Result 3521 states and 4098 transitions. [2021-10-21 19:16:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-21 19:16:47,020 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-10-21 19:16:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:47,026 INFO L225 Difference]: With dead ends: 3521 [2021-10-21 19:16:47,027 INFO L226 Difference]: Without dead ends: 3520 [2021-10-21 19:16:47,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 400.7ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-10-21 19:16:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2021-10-21 19:16:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 1848. [2021-10-21 19:16:47,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1846 states have (on average 1.1608884073672807) internal successors, (2143), 1847 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2143 transitions. [2021-10-21 19:16:47,100 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2143 transitions. Word has length 184 [2021-10-21 19:16:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:47,100 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 2143 transitions. [2021-10-21 19:16:47,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2143 transitions. [2021-10-21 19:16:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-10-21 19:16:47,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:47,103 INFO L512 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1] [2021-10-21 19:16:47,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:47,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-21 19:16:47,319 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:47,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:47,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1525731022, now seen corresponding path program 30 times [2021-10-21 19:16:47,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:47,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727725097] [2021-10-21 19:16:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:47,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:47,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:47,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727725097] [2021-10-21 19:16:47,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727725097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:47,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572680231] [2021-10-21 19:16:47,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:16:47,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:47,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:47,883 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:47,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-10-21 19:16:49,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2021-10-21 19:16:49,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:49,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-21 19:16:49,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:49,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572680231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:49,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:49,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-10-21 19:16:49,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553359708] [2021-10-21 19:16:49,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-21 19:16:49,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:49,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-21 19:16:49,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 19:16:49,694 INFO L87 Difference]: Start difference. First operand 1848 states and 2143 transitions. Second operand has 34 states, 33 states have (on average 5.757575757575758) internal successors, (190), 33 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:49,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:49,924 INFO L93 Difference]: Finished difference Result 3649 states and 4248 transitions. [2021-10-21 19:16:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-21 19:16:49,924 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.757575757575758) internal successors, (190), 33 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2021-10-21 19:16:49,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:49,930 INFO L225 Difference]: With dead ends: 3649 [2021-10-21 19:16:49,931 INFO L226 Difference]: Without dead ends: 3648 [2021-10-21 19:16:49,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 459.6ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 19:16:49,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3648 states. [2021-10-21 19:16:49,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3648 to 1911. [2021-10-21 19:16:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1909 states have (on average 1.1613410162388684) internal successors, (2217), 1910 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2217 transitions. [2021-10-21 19:16:50,002 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2217 transitions. Word has length 190 [2021-10-21 19:16:50,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:50,002 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 2217 transitions. [2021-10-21 19:16:50,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.757575757575758) internal successors, (190), 33 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2217 transitions. [2021-10-21 19:16:50,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-10-21 19:16:50,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:50,005 INFO L512 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1] [2021-10-21 19:16:50,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:50,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:50,227 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:50,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:50,227 INFO L82 PathProgramCache]: Analyzing trace with hash 394389035, now seen corresponding path program 31 times [2021-10-21 19:16:50,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:50,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277755404] [2021-10-21 19:16:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:50,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:50,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:50,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277755404] [2021-10-21 19:16:50,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277755404] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:50,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189413186] [2021-10-21 19:16:50,770 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:16:50,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:50,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:50,775 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:50,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-10-21 19:16:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:52,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-21 19:16:52,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:52,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189413186] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:52,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:52,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-10-21 19:16:52,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754748531] [2021-10-21 19:16:52,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-21 19:16:52,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:52,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-21 19:16:52,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 19:16:52,859 INFO L87 Difference]: Start difference. First operand 1911 states and 2217 transitions. Second operand has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:53,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:53,094 INFO L93 Difference]: Finished difference Result 3777 states and 4398 transitions. [2021-10-21 19:16:53,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-21 19:16:53,095 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2021-10-21 19:16:53,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:53,102 INFO L225 Difference]: With dead ends: 3777 [2021-10-21 19:16:53,102 INFO L226 Difference]: Without dead ends: 3776 [2021-10-21 19:16:53,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 436.7ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 19:16:53,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-10-21 19:16:53,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 1974. [2021-10-21 19:16:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1972 states have (on average 1.161764705882353) internal successors, (2291), 1973 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2291 transitions. [2021-10-21 19:16:53,153 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2291 transitions. Word has length 196 [2021-10-21 19:16:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:53,153 INFO L470 AbstractCegarLoop]: Abstraction has 1974 states and 2291 transitions. [2021-10-21 19:16:53,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2291 transitions. [2021-10-21 19:16:53,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-10-21 19:16:53,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:53,156 INFO L512 BasicCegarLoop]: trace histogram [33, 32, 32, 23, 23, 23, 10, 10, 10, 1, 1] [2021-10-21 19:16:53,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:53,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:53,371 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:53,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:53,371 INFO L82 PathProgramCache]: Analyzing trace with hash 666443416, now seen corresponding path program 16 times [2021-10-21 19:16:53,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:53,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444555677] [2021-10-21 19:16:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:53,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2676 backedges. 869 proven. 1564 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-21 19:16:53,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:53,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444555677] [2021-10-21 19:16:53,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444555677] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:53,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983708542] [2021-10-21 19:16:53,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:16:53,740 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:53,743 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:53,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-10-21 19:16:55,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:16:55,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:55,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 19:16:55,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2676 backedges. 869 proven. 1564 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-21 19:16:55,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983708542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:55,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:55,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-10-21 19:16:55,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055761860] [2021-10-21 19:16:55,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-21 19:16:55,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:55,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-21 19:16:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-21 19:16:55,624 INFO L87 Difference]: Start difference. First operand 1974 states and 2291 transitions. Second operand has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:55,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:55,721 INFO L93 Difference]: Finished difference Result 3823 states and 4458 transitions. [2021-10-21 19:16:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-21 19:16:55,738 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2021-10-21 19:16:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:55,740 INFO L225 Difference]: With dead ends: 3823 [2021-10-21 19:16:55,740 INFO L226 Difference]: Without dead ends: 1984 [2021-10-21 19:16:55,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 282.3ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-10-21 19:16:55,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2021-10-21 19:16:55,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1980. [2021-10-21 19:16:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1978 states have (on average 1.1612740141557127) internal successors, (2297), 1979 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:55,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2297 transitions. [2021-10-21 19:16:55,783 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2297 transitions. Word has length 198 [2021-10-21 19:16:55,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:55,784 INFO L470 AbstractCegarLoop]: Abstraction has 1980 states and 2297 transitions. [2021-10-21 19:16:55,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:55,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2297 transitions. [2021-10-21 19:16:55,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-10-21 19:16:55,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:55,786 INFO L512 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1] [2021-10-21 19:16:55,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:56,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:56,003 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:56,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1039319964, now seen corresponding path program 32 times [2021-10-21 19:16:56,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:56,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681519817] [2021-10-21 19:16:56,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:56,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:56,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:56,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681519817] [2021-10-21 19:16:56,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681519817] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:56,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007275218] [2021-10-21 19:16:56,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:16:56,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:56,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:56,593 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:56,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-21 19:16:58,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:16:58,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:16:58,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-21 19:16:58,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:58,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007275218] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:58,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:16:58,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-10-21 19:16:58,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591025467] [2021-10-21 19:16:58,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-21 19:16:58,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:58,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-21 19:16:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-21 19:16:58,539 INFO L87 Difference]: Start difference. First operand 1980 states and 2297 transitions. Second operand has 36 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:58,834 INFO L93 Difference]: Finished difference Result 3911 states and 4554 transitions. [2021-10-21 19:16:58,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-21 19:16:58,835 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2021-10-21 19:16:58,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:58,839 INFO L225 Difference]: With dead ends: 3911 [2021-10-21 19:16:58,840 INFO L226 Difference]: Without dead ends: 3910 [2021-10-21 19:16:58,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 433.9ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-10-21 19:16:58,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2021-10-21 19:16:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 2043. [2021-10-21 19:16:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 2041 states have (on average 1.1616854483096521) internal successors, (2371), 2042 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 2371 transitions. [2021-10-21 19:16:58,886 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 2371 transitions. Word has length 202 [2021-10-21 19:16:58,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:58,886 INFO L470 AbstractCegarLoop]: Abstraction has 2043 states and 2371 transitions. [2021-10-21 19:16:58,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 2371 transitions. [2021-10-21 19:16:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-10-21 19:16:58,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:58,889 INFO L512 BasicCegarLoop]: trace histogram [34, 33, 33, 24, 24, 24, 10, 10, 10, 1, 1] [2021-10-21 19:16:58,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:59,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:59,111 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:16:59,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:59,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1556597393, now seen corresponding path program 17 times [2021-10-21 19:16:59,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:59,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801397325] [2021-10-21 19:16:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:59,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2853 backedges. 906 proven. 1704 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-21 19:16:59,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:59,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801397325] [2021-10-21 19:16:59,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801397325] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:16:59,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179807442] [2021-10-21 19:16:59,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:16:59,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:59,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:59,430 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:59,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-21 19:17:00,960 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-10-21 19:17:00,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:00,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-21 19:17:00,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2853 backedges. 906 proven. 1704 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-21 19:17:01,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179807442] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:01,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:01,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-10-21 19:17:01,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844335545] [2021-10-21 19:17:01,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-21 19:17:01,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-21 19:17:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-21 19:17:01,463 INFO L87 Difference]: Start difference. First operand 2043 states and 2371 transitions. Second operand has 27 states, 27 states have (on average 5.703703703703703) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:01,579 INFO L93 Difference]: Finished difference Result 3955 states and 4612 transitions. [2021-10-21 19:17:01,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-21 19:17:01,580 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.703703703703703) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-10-21 19:17:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:01,583 INFO L225 Difference]: With dead ends: 3955 [2021-10-21 19:17:01,583 INFO L226 Difference]: Without dead ends: 2053 [2021-10-21 19:17:01,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 235.5ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-10-21 19:17:01,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2021-10-21 19:17:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2049. [2021-10-21 19:17:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2047 states have (on average 1.1612115290669272) internal successors, (2377), 2048 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2377 transitions. [2021-10-21 19:17:01,629 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2377 transitions. Word has length 204 [2021-10-21 19:17:01,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:01,629 INFO L470 AbstractCegarLoop]: Abstraction has 2049 states and 2377 transitions. [2021-10-21 19:17:01,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.703703703703703) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2377 transitions. [2021-10-21 19:17:01,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-10-21 19:17:01,632 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:01,632 INFO L512 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 1, 1] [2021-10-21 19:17:01,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:01,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:01,851 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:01,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:01,852 INFO L82 PathProgramCache]: Analyzing trace with hash 931349469, now seen corresponding path program 33 times [2021-10-21 19:17:01,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:01,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517968188] [2021-10-21 19:17:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:01,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:02,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:02,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517968188] [2021-10-21 19:17:02,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517968188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:02,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996118620] [2021-10-21 19:17:02,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:17:02,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:02,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:02,456 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:02,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-21 19:17:04,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2021-10-21 19:17:04,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:04,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-21 19:17:04,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:04,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996118620] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:04,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:04,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-10-21 19:17:04,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724062563] [2021-10-21 19:17:04,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-10-21 19:17:04,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:04,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-10-21 19:17:04,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-21 19:17:04,863 INFO L87 Difference]: Start difference. First operand 2049 states and 2377 transitions. Second operand has 37 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:05,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:05,213 INFO L93 Difference]: Finished difference Result 4045 states and 4710 transitions. [2021-10-21 19:17:05,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-21 19:17:05,213 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2021-10-21 19:17:05,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:05,218 INFO L225 Difference]: With dead ends: 4045 [2021-10-21 19:17:05,219 INFO L226 Difference]: Without dead ends: 4044 [2021-10-21 19:17:05,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 497.2ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-10-21 19:17:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2021-10-21 19:17:05,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2112. [2021-10-21 19:17:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2110 states have (on average 1.1616113744075829) internal successors, (2451), 2111 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2451 transitions. [2021-10-21 19:17:05,284 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2451 transitions. Word has length 208 [2021-10-21 19:17:05,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:05,285 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 2451 transitions. [2021-10-21 19:17:05,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2451 transitions. [2021-10-21 19:17:05,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-10-21 19:17:05,288 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:05,288 INFO L512 BasicCegarLoop]: trace histogram [35, 34, 34, 25, 25, 25, 10, 10, 10, 1, 1] [2021-10-21 19:17:05,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:05,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-10-21 19:17:05,507 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:05,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:05,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1289344970, now seen corresponding path program 18 times [2021-10-21 19:17:05,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:05,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700573433] [2021-10-21 19:17:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:05,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 943 proven. 1850 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-10-21 19:17:05,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:05,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700573433] [2021-10-21 19:17:05,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700573433] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:05,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780452607] [2021-10-21 19:17:05,874 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:17:05,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:05,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:05,874 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:05,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-21 19:17:07,511 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-10-21 19:17:07,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:07,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:17:07,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 1149 proven. 323 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2021-10-21 19:17:08,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780452607] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:08,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:08,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 40 [2021-10-21 19:17:08,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776757856] [2021-10-21 19:17:08,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-21 19:17:08,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:08,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-21 19:17:08,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-21 19:17:08,247 INFO L87 Difference]: Start difference. First operand 2112 states and 2451 transitions. Second operand has 40 states, 40 states have (on average 5.925) internal successors, (237), 40 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:08,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:08,404 INFO L93 Difference]: Finished difference Result 4413 states and 5193 transitions. [2021-10-21 19:17:08,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-21 19:17:08,405 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.925) internal successors, (237), 40 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-10-21 19:17:08,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:08,407 INFO L225 Difference]: With dead ends: 4413 [2021-10-21 19:17:08,407 INFO L226 Difference]: Without dead ends: 2448 [2021-10-21 19:17:08,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 516.4ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-21 19:17:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2021-10-21 19:17:08,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2424. [2021-10-21 19:17:08,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2422 states have (on average 1.1610239471511148) internal successors, (2812), 2423 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 2812 transitions. [2021-10-21 19:17:08,444 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 2812 transitions. Word has length 210 [2021-10-21 19:17:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:08,445 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 2812 transitions. [2021-10-21 19:17:08,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.925) internal successors, (237), 40 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 2812 transitions. [2021-10-21 19:17:08,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-10-21 19:17:08,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:08,446 INFO L512 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 1, 1] [2021-10-21 19:17:08,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-21 19:17:08,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-10-21 19:17:08,647 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:08,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:08,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1997927274, now seen corresponding path program 34 times [2021-10-21 19:17:08,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:08,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909467772] [2021-10-21 19:17:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:08,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:09,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:09,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909467772] [2021-10-21 19:17:09,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909467772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:09,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961669223] [2021-10-21 19:17:09,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:17:09,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:09,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:09,289 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:09,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-21 19:17:11,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:17:11,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:11,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-21 19:17:11,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:11,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961669223] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:11,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:11,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-10-21 19:17:11,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401688130] [2021-10-21 19:17:11,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-21 19:17:11,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:11,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-21 19:17:11,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-21 19:17:11,762 INFO L87 Difference]: Start difference. First operand 2424 states and 2812 transitions. Second operand has 38 states, 37 states have (on average 5.783783783783784) internal successors, (214), 37 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:12,009 INFO L93 Difference]: Finished difference Result 4791 states and 5578 transitions. [2021-10-21 19:17:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-21 19:17:12,009 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 5.783783783783784) internal successors, (214), 37 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2021-10-21 19:17:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:12,014 INFO L225 Difference]: With dead ends: 4791 [2021-10-21 19:17:12,015 INFO L226 Difference]: Without dead ends: 4790 [2021-10-21 19:17:12,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 523.5ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-21 19:17:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2021-10-21 19:17:12,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 2499. [2021-10-21 19:17:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2497 states have (on average 1.1613936724068883) internal successors, (2900), 2498 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 2900 transitions. [2021-10-21 19:17:12,085 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 2900 transitions. Word has length 214 [2021-10-21 19:17:12,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:12,085 INFO L470 AbstractCegarLoop]: Abstraction has 2499 states and 2900 transitions. [2021-10-21 19:17:12,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 5.783783783783784) internal successors, (214), 37 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 2900 transitions. [2021-10-21 19:17:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-10-21 19:17:12,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:12,087 INFO L512 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 1, 1] [2021-10-21 19:17:12,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:12,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-21 19:17:12,287 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:12,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:12,288 INFO L82 PathProgramCache]: Analyzing trace with hash -830757233, now seen corresponding path program 35 times [2021-10-21 19:17:12,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:12,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218428581] [2021-10-21 19:17:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:12,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:12,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:12,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218428581] [2021-10-21 19:17:12,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218428581] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:12,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799428327] [2021-10-21 19:17:12,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:17:12,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:12,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:12,962 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:12,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-10-21 19:17:14,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-10-21 19:17:14,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:14,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-21 19:17:14,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:15,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799428327] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:15,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:15,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-10-21 19:17:15,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445532254] [2021-10-21 19:17:15,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-21 19:17:15,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:15,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-21 19:17:15,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-21 19:17:15,241 INFO L87 Difference]: Start difference. First operand 2499 states and 2900 transitions. Second operand has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:15,565 INFO L93 Difference]: Finished difference Result 4943 states and 5756 transitions. [2021-10-21 19:17:15,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-21 19:17:15,566 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2021-10-21 19:17:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:15,571 INFO L225 Difference]: With dead ends: 4943 [2021-10-21 19:17:15,571 INFO L226 Difference]: Without dead ends: 4942 [2021-10-21 19:17:15,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 507.5ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-21 19:17:15,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4942 states. [2021-10-21 19:17:15,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4942 to 2574. [2021-10-21 19:17:15,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2572 states have (on average 1.1617418351477449) internal successors, (2988), 2573 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:15,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 2988 transitions. [2021-10-21 19:17:15,676 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 2988 transitions. Word has length 220 [2021-10-21 19:17:15,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:15,676 INFO L470 AbstractCegarLoop]: Abstraction has 2574 states and 2988 transitions. [2021-10-21 19:17:15,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:15,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 2988 transitions. [2021-10-21 19:17:15,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-10-21 19:17:15,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:15,680 INFO L512 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1] [2021-10-21 19:17:15,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:15,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-10-21 19:17:15,907 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash -257547832, now seen corresponding path program 36 times [2021-10-21 19:17:15,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:15,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363695151] [2021-10-21 19:17:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:15,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:16,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:16,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363695151] [2021-10-21 19:17:16,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363695151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:16,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984505163] [2021-10-21 19:17:16,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:17:16,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:16,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:16,651 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:16,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-10-21 19:17:18,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2021-10-21 19:17:18,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:18,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-21 19:17:18,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:19,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984505163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:19,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:19,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-10-21 19:17:19,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306246581] [2021-10-21 19:17:19,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-10-21 19:17:19,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:19,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-10-21 19:17:19,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-21 19:17:19,238 INFO L87 Difference]: Start difference. First operand 2574 states and 2988 transitions. Second operand has 40 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:19,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:19,550 INFO L93 Difference]: Finished difference Result 5095 states and 5934 transitions. [2021-10-21 19:17:19,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-21 19:17:19,551 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2021-10-21 19:17:19,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:19,554 INFO L225 Difference]: With dead ends: 5095 [2021-10-21 19:17:19,554 INFO L226 Difference]: Without dead ends: 5094 [2021-10-21 19:17:19,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 611.1ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-10-21 19:17:19,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5094 states. [2021-10-21 19:17:19,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5094 to 2649. [2021-10-21 19:17:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2647 states have (on average 1.162070268228183) internal successors, (3076), 2648 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3076 transitions. [2021-10-21 19:17:19,598 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3076 transitions. Word has length 226 [2021-10-21 19:17:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:19,598 INFO L470 AbstractCegarLoop]: Abstraction has 2649 states and 3076 transitions. [2021-10-21 19:17:19,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:19,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3076 transitions. [2021-10-21 19:17:19,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-21 19:17:19,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:19,601 INFO L512 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1] [2021-10-21 19:17:19,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-10-21 19:17:19,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:19,815 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:19,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:19,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1324642751, now seen corresponding path program 37 times [2021-10-21 19:17:19,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:19,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297622630] [2021-10-21 19:17:19,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:19,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:20,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:20,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297622630] [2021-10-21 19:17:20,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297622630] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:20,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546561036] [2021-10-21 19:17:20,545 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:17:20,545 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:20,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:20,550 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:20,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-10-21 19:17:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:22,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-21 19:17:22,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:23,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546561036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:23,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:23,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-10-21 19:17:23,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501296051] [2021-10-21 19:17:23,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-21 19:17:23,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:23,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-21 19:17:23,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-21 19:17:23,064 INFO L87 Difference]: Start difference. First operand 2649 states and 3076 transitions. Second operand has 41 states, 40 states have (on average 5.8) internal successors, (232), 40 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:23,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:23,370 INFO L93 Difference]: Finished difference Result 5247 states and 6112 transitions. [2021-10-21 19:17:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-21 19:17:23,370 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 5.8) internal successors, (232), 40 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2021-10-21 19:17:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:23,374 INFO L225 Difference]: With dead ends: 5247 [2021-10-21 19:17:23,374 INFO L226 Difference]: Without dead ends: 5246 [2021-10-21 19:17:23,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 613.0ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-10-21 19:17:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2021-10-21 19:17:23,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 2724. [2021-10-21 19:17:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2722 states have (on average 1.162380602498163) internal successors, (3164), 2723 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3164 transitions. [2021-10-21 19:17:23,421 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3164 transitions. Word has length 232 [2021-10-21 19:17:23,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:23,421 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3164 transitions. [2021-10-21 19:17:23,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 5.8) internal successors, (232), 40 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:23,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3164 transitions. [2021-10-21 19:17:23,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-10-21 19:17:23,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:23,424 INFO L512 BasicCegarLoop]: trace histogram [39, 38, 38, 27, 27, 27, 12, 12, 12, 1, 1] [2021-10-21 19:17:23,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-10-21 19:17:23,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-10-21 19:17:23,624 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:23,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:23,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1381135010, now seen corresponding path program 19 times [2021-10-21 19:17:23,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:23,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549546970] [2021-10-21 19:17:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:23,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3760 backedges. 1237 proven. 2160 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-21 19:17:24,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:24,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549546970] [2021-10-21 19:17:24,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549546970] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:24,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73633333] [2021-10-21 19:17:24,029 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:17:24,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:24,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:24,034 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:24,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-21 19:17:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:25,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-21 19:17:25,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3760 backedges. 1237 proven. 2160 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-21 19:17:26,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73633333] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:26,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:26,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-10-21 19:17:26,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867481340] [2021-10-21 19:17:26,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-21 19:17:26,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:26,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-21 19:17:26,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-21 19:17:26,501 INFO L87 Difference]: Start difference. First operand 2724 states and 3164 transitions. Second operand has 30 states, 30 states have (on average 5.733333333333333) internal successors, (172), 29 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:26,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:26,631 INFO L93 Difference]: Finished difference Result 5299 states and 6180 transitions. [2021-10-21 19:17:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-21 19:17:26,632 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.733333333333333) internal successors, (172), 29 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2021-10-21 19:17:26,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:26,633 INFO L225 Difference]: With dead ends: 5299 [2021-10-21 19:17:26,634 INFO L226 Difference]: Without dead ends: 2734 [2021-10-21 19:17:26,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 309.2ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-10-21 19:17:26,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-10-21 19:17:26,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2730. [2021-10-21 19:17:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 2728 states have (on average 1.1620234604105573) internal successors, (3170), 2729 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3170 transitions. [2021-10-21 19:17:26,680 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3170 transitions. Word has length 234 [2021-10-21 19:17:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:26,680 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3170 transitions. [2021-10-21 19:17:26,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.733333333333333) internal successors, (172), 29 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:26,680 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3170 transitions. [2021-10-21 19:17:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-10-21 19:17:26,682 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:26,683 INFO L512 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 1, 1] [2021-10-21 19:17:26,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-21 19:17:26,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:26,883 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:26,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:26,884 INFO L82 PathProgramCache]: Analyzing trace with hash -209585158, now seen corresponding path program 38 times [2021-10-21 19:17:26,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:26,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039307030] [2021-10-21 19:17:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:26,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:27,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:27,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039307030] [2021-10-21 19:17:27,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039307030] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:27,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635603097] [2021-10-21 19:17:27,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:17:27,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:27,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:27,520 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:27,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-10-21 19:17:29,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:17:29,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:29,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-21 19:17:29,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:30,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635603097] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:30,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:30,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2021-10-21 19:17:30,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92948846] [2021-10-21 19:17:30,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-21 19:17:30,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:30,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-21 19:17:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-21 19:17:30,073 INFO L87 Difference]: Start difference. First operand 2730 states and 3170 transitions. Second operand has 42 states, 41 states have (on average 5.804878048780488) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:30,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:30,405 INFO L93 Difference]: Finished difference Result 5405 states and 6296 transitions. [2021-10-21 19:17:30,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-21 19:17:30,406 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 5.804878048780488) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-10-21 19:17:30,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:30,409 INFO L225 Difference]: With dead ends: 5405 [2021-10-21 19:17:30,410 INFO L226 Difference]: Without dead ends: 5404 [2021-10-21 19:17:30,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 522.9ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-21 19:17:30,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2021-10-21 19:17:30,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 2805. [2021-10-21 19:17:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2803 states have (on average 1.1623260792008563) internal successors, (3258), 2804 states have internal predecessors, (3258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3258 transitions. [2021-10-21 19:17:30,463 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3258 transitions. Word has length 238 [2021-10-21 19:17:30,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:30,463 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3258 transitions. [2021-10-21 19:17:30,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 5.804878048780488) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:30,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3258 transitions. [2021-10-21 19:17:30,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-10-21 19:17:30,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:30,465 INFO L512 BasicCegarLoop]: trace histogram [40, 39, 39, 28, 28, 28, 12, 12, 12, 1, 1] [2021-10-21 19:17:30,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:30,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:30,666 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:30,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:30,666 INFO L82 PathProgramCache]: Analyzing trace with hash -790342117, now seen corresponding path program 20 times [2021-10-21 19:17:30,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:30,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597952470] [2021-10-21 19:17:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:30,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1282 proven. 2324 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-21 19:17:31,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:31,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597952470] [2021-10-21 19:17:31,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597952470] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:31,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988300836] [2021-10-21 19:17:31,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:17:31,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:31,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:31,041 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:31,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-21 19:17:33,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:17:33,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:33,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 19:17:33,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1282 proven. 2324 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-21 19:17:33,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988300836] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:33,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:33,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-10-21 19:17:33,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040102451] [2021-10-21 19:17:33,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-21 19:17:33,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-21 19:17:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-21 19:17:33,717 INFO L87 Difference]: Start difference. First operand 2805 states and 3258 transitions. Second operand has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:33,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:33,852 INFO L93 Difference]: Finished difference Result 5455 states and 6362 transitions. [2021-10-21 19:17:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-21 19:17:33,854 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2021-10-21 19:17:33,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:33,856 INFO L225 Difference]: With dead ends: 5455 [2021-10-21 19:17:33,856 INFO L226 Difference]: Without dead ends: 2815 [2021-10-21 19:17:33,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 283.7ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-10-21 19:17:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2021-10-21 19:17:33,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2811. [2021-10-21 19:17:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2809 states have (on average 1.1619793520825916) internal successors, (3264), 2810 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:33,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3264 transitions. [2021-10-21 19:17:33,920 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3264 transitions. Word has length 240 [2021-10-21 19:17:33,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:33,920 INFO L470 AbstractCegarLoop]: Abstraction has 2811 states and 3264 transitions. [2021-10-21 19:17:33,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:33,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3264 transitions. [2021-10-21 19:17:33,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-10-21 19:17:33,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:33,923 INFO L512 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 1, 1] [2021-10-21 19:17:33,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:34,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-10-21 19:17:34,126 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:34,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:34,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1192458995, now seen corresponding path program 39 times [2021-10-21 19:17:34,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:34,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472604376] [2021-10-21 19:17:34,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:34,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:34,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:34,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:34,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472604376] [2021-10-21 19:17:34,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472604376] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:34,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48270843] [2021-10-21 19:17:34,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:17:34,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:34,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:34,947 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:34,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-21 19:17:37,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2021-10-21 19:17:37,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:37,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-21 19:17:37,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:37,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48270843] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:37,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:37,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-10-21 19:17:37,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390869171] [2021-10-21 19:17:37,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-21 19:17:37,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:37,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-21 19:17:37,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-21 19:17:37,685 INFO L87 Difference]: Start difference. First operand 2811 states and 3264 transitions. Second operand has 43 states, 42 states have (on average 5.809523809523809) internal successors, (244), 42 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:38,042 INFO L93 Difference]: Finished difference Result 5563 states and 6480 transitions. [2021-10-21 19:17:38,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-21 19:17:38,042 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 5.809523809523809) internal successors, (244), 42 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2021-10-21 19:17:38,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:38,046 INFO L225 Difference]: With dead ends: 5563 [2021-10-21 19:17:38,046 INFO L226 Difference]: Without dead ends: 5562 [2021-10-21 19:17:38,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 690.3ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-21 19:17:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-10-21 19:17:38,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 2886. [2021-10-21 19:17:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2884 states have (on average 1.1622746185852981) internal successors, (3352), 2885 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3352 transitions. [2021-10-21 19:17:38,090 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3352 transitions. Word has length 244 [2021-10-21 19:17:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:38,091 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 3352 transitions. [2021-10-21 19:17:38,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 5.809523809523809) internal successors, (244), 42 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3352 transitions. [2021-10-21 19:17:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-10-21 19:17:38,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:38,093 INFO L512 BasicCegarLoop]: trace histogram [41, 40, 40, 29, 29, 29, 12, 12, 12, 1, 1] [2021-10-21 19:17:38,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:38,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-10-21 19:17:38,294 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:38,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:38,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2045642028, now seen corresponding path program 21 times [2021-10-21 19:17:38,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:38,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207951574] [2021-10-21 19:17:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:38,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 1327 proven. 2494 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-10-21 19:17:38,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:38,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207951574] [2021-10-21 19:17:38,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207951574] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:38,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688868020] [2021-10-21 19:17:38,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:17:38,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:38,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:38,701 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:38,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-21 19:17:40,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-10-21 19:17:40,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:40,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:17:40,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 1565 proven. 459 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2021-10-21 19:17:41,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688868020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:41,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:41,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 46 [2021-10-21 19:17:41,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423142482] [2021-10-21 19:17:41,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-21 19:17:41,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-21 19:17:41,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-21 19:17:41,761 INFO L87 Difference]: Start difference. First operand 2886 states and 3352 transitions. Second operand has 46 states, 46 states have (on average 5.934782608695652) internal successors, (273), 46 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:41,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:41,945 INFO L93 Difference]: Finished difference Result 5989 states and 7039 transitions. [2021-10-21 19:17:41,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-21 19:17:41,945 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.934782608695652) internal successors, (273), 46 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2021-10-21 19:17:41,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:41,948 INFO L225 Difference]: With dead ends: 5989 [2021-10-21 19:17:41,948 INFO L226 Difference]: Without dead ends: 3274 [2021-10-21 19:17:41,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 637.3ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-21 19:17:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-10-21 19:17:42,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3246. [2021-10-21 19:17:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3244 states have (on average 1.1618372379778052) internal successors, (3769), 3245 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 3769 transitions. [2021-10-21 19:17:42,025 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 3769 transitions. Word has length 246 [2021-10-21 19:17:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:42,025 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 3769 transitions. [2021-10-21 19:17:42,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.934782608695652) internal successors, (273), 46 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 3769 transitions. [2021-10-21 19:17:42,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-10-21 19:17:42,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:42,028 INFO L512 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 1, 1] [2021-10-21 19:17:42,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:42,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-10-21 19:17:42,255 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:42,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:42,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1359078612, now seen corresponding path program 40 times [2021-10-21 19:17:42,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:42,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530909076] [2021-10-21 19:17:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:42,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:42,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:42,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530909076] [2021-10-21 19:17:42,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530909076] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:42,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625774590] [2021-10-21 19:17:42,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:17:42,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:42,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:42,950 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:42,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-21 19:17:45,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:17:45,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:45,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-21 19:17:45,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:45,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625774590] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:45,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:45,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-10-21 19:17:45,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338484052] [2021-10-21 19:17:45,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-10-21 19:17:45,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:45,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-10-21 19:17:45,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-21 19:17:45,940 INFO L87 Difference]: Start difference. First operand 3246 states and 3769 transitions. Second operand has 44 states, 43 states have (on average 5.813953488372093) internal successors, (250), 43 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:46,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:46,262 INFO L93 Difference]: Finished difference Result 6429 states and 7488 transitions. [2021-10-21 19:17:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-21 19:17:46,263 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 5.813953488372093) internal successors, (250), 43 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2021-10-21 19:17:46,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:46,268 INFO L225 Difference]: With dead ends: 6429 [2021-10-21 19:17:46,268 INFO L226 Difference]: Without dead ends: 6428 [2021-10-21 19:17:46,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 580.8ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-10-21 19:17:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6428 states. [2021-10-21 19:17:46,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6428 to 3333. [2021-10-21 19:17:46,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3331 states have (on average 1.162113479435605) internal successors, (3871), 3332 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:46,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 3871 transitions. [2021-10-21 19:17:46,378 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 3871 transitions. Word has length 250 [2021-10-21 19:17:46,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:46,379 INFO L470 AbstractCegarLoop]: Abstraction has 3333 states and 3871 transitions. [2021-10-21 19:17:46,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 5.813953488372093) internal successors, (250), 43 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:46,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 3871 transitions. [2021-10-21 19:17:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-10-21 19:17:46,381 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:46,382 INFO L512 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1] [2021-10-21 19:17:46,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-21 19:17:46,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-10-21 19:17:46,582 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:46,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:46,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1414271835, now seen corresponding path program 41 times [2021-10-21 19:17:46,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:46,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908047829] [2021-10-21 19:17:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:46,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:47,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:47,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908047829] [2021-10-21 19:17:47,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908047829] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:47,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787615057] [2021-10-21 19:17:47,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:17:47,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:47,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:47,415 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:47,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-21 19:17:49,876 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-10-21 19:17:49,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:49,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-21 19:17:49,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:50,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787615057] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:50,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:50,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2021-10-21 19:17:50,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074337290] [2021-10-21 19:17:50,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-10-21 19:17:50,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:50,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-10-21 19:17:50,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-21 19:17:50,445 INFO L87 Difference]: Start difference. First operand 3333 states and 3871 transitions. Second operand has 45 states, 44 states have (on average 5.818181818181818) internal successors, (256), 44 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:50,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:50,760 INFO L93 Difference]: Finished difference Result 6605 states and 7694 transitions. [2021-10-21 19:17:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-21 19:17:50,760 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 5.818181818181818) internal successors, (256), 44 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2021-10-21 19:17:50,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:50,766 INFO L225 Difference]: With dead ends: 6605 [2021-10-21 19:17:50,766 INFO L226 Difference]: Without dead ends: 6604 [2021-10-21 19:17:50,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 686.2ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-10-21 19:17:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2021-10-21 19:17:50,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 3420. [2021-10-21 19:17:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3420 states, 3418 states have (on average 1.1623756582796958) internal successors, (3973), 3419 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 3973 transitions. [2021-10-21 19:17:50,854 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 3973 transitions. Word has length 256 [2021-10-21 19:17:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:50,854 INFO L470 AbstractCegarLoop]: Abstraction has 3420 states and 3973 transitions. [2021-10-21 19:17:50,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 5.818181818181818) internal successors, (256), 44 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 3973 transitions. [2021-10-21 19:17:50,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-10-21 19:17:50,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:50,857 INFO L512 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1] [2021-10-21 19:17:50,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:51,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:51,057 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:51,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash -2082799778, now seen corresponding path program 42 times [2021-10-21 19:17:51,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:51,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805405495] [2021-10-21 19:17:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:51,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:51,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:51,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805405495] [2021-10-21 19:17:51,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805405495] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:51,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644612191] [2021-10-21 19:17:51,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:17:51,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:51,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:51,826 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:51,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-21 19:17:54,329 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2021-10-21 19:17:54,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:17:54,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-21 19:17:54,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:54,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644612191] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:54,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:54,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2021-10-21 19:17:54,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986041216] [2021-10-21 19:17:54,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-21 19:17:54,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:54,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-21 19:17:54,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-21 19:17:54,942 INFO L87 Difference]: Start difference. First operand 3420 states and 3973 transitions. Second operand has 46 states, 45 states have (on average 5.822222222222222) internal successors, (262), 45 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:55,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:55,263 INFO L93 Difference]: Finished difference Result 6781 states and 7900 transitions. [2021-10-21 19:17:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-21 19:17:55,264 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 5.822222222222222) internal successors, (262), 45 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2021-10-21 19:17:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:55,269 INFO L225 Difference]: With dead ends: 6781 [2021-10-21 19:17:55,269 INFO L226 Difference]: Without dead ends: 6780 [2021-10-21 19:17:55,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 633.8ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-21 19:17:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6780 states. [2021-10-21 19:17:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6780 to 3507. [2021-10-21 19:17:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3505 states have (on average 1.1626248216833095) internal successors, (4075), 3506 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:55,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4075 transitions. [2021-10-21 19:17:55,327 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4075 transitions. Word has length 262 [2021-10-21 19:17:55,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:55,328 INFO L470 AbstractCegarLoop]: Abstraction has 3507 states and 4075 transitions. [2021-10-21 19:17:55,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 5.822222222222222) internal successors, (262), 45 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4075 transitions. [2021-10-21 19:17:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-10-21 19:17:55,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:55,330 INFO L512 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 1, 1] [2021-10-21 19:17:55,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-21 19:17:55,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-10-21 19:17:55,531 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:17:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:17:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash -850566313, now seen corresponding path program 43 times [2021-10-21 19:17:55,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:17:55,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890453960] [2021-10-21 19:17:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:17:55,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:17:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:56,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:17:56,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890453960] [2021-10-21 19:17:56,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890453960] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:56,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582924361] [2021-10-21 19:17:56,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:17:56,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:17:56,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:17:56,371 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:17:56,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-21 19:17:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:17:58,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-21 19:17:58,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:17:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:17:59,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582924361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:17:59,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:17:59,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-10-21 19:17:59,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617251018] [2021-10-21 19:17:59,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-21 19:17:59,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:17:59,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-21 19:17:59,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-21 19:17:59,522 INFO L87 Difference]: Start difference. First operand 3507 states and 4075 transitions. Second operand has 47 states, 46 states have (on average 5.826086956521739) internal successors, (268), 46 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:59,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:17:59,852 INFO L93 Difference]: Finished difference Result 6957 states and 8106 transitions. [2021-10-21 19:17:59,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-21 19:17:59,853 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 5.826086956521739) internal successors, (268), 46 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 268 [2021-10-21 19:17:59,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:17:59,858 INFO L225 Difference]: With dead ends: 6957 [2021-10-21 19:17:59,858 INFO L226 Difference]: Without dead ends: 6956 [2021-10-21 19:17:59,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 706.3ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-21 19:17:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2021-10-21 19:17:59,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 3594. [2021-10-21 19:17:59,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3592 states have (on average 1.1628619153674833) internal successors, (4177), 3593 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 4177 transitions. [2021-10-21 19:17:59,916 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 4177 transitions. Word has length 268 [2021-10-21 19:17:59,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:17:59,916 INFO L470 AbstractCegarLoop]: Abstraction has 3594 states and 4177 transitions. [2021-10-21 19:17:59,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 5.826086956521739) internal successors, (268), 46 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:17:59,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 4177 transitions. [2021-10-21 19:17:59,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-10-21 19:17:59,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:17:59,919 INFO L512 BasicCegarLoop]: trace histogram [45, 44, 44, 31, 31, 31, 14, 14, 14, 1, 1] [2021-10-21 19:17:59,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:00,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-10-21 19:18:00,123 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:00,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:00,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1433281964, now seen corresponding path program 22 times [2021-10-21 19:18:00,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:00,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036660704] [2021-10-21 19:18:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:00,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5028 backedges. 1669 proven. 2852 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-10-21 19:18:00,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:00,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036660704] [2021-10-21 19:18:00,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036660704] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:00,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811938880] [2021-10-21 19:18:00,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:18:00,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:00,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:00,577 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:00,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-21 19:18:03,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:18:03,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:18:03,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-21 19:18:03,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5028 backedges. 1669 proven. 2852 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-10-21 19:18:03,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811938880] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:03,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:03,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-10-21 19:18:03,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777840934] [2021-10-21 19:18:03,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-21 19:18:03,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:03,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-21 19:18:03,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 19:18:03,821 INFO L87 Difference]: Start difference. First operand 3594 states and 4177 transitions. Second operand has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 33 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:03,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:03,928 INFO L93 Difference]: Finished difference Result 7015 states and 8182 transitions. [2021-10-21 19:18:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-21 19:18:03,928 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 33 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2021-10-21 19:18:03,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:03,931 INFO L225 Difference]: With dead ends: 7015 [2021-10-21 19:18:03,931 INFO L226 Difference]: Without dead ends: 3604 [2021-10-21 19:18:03,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 347.4ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-10-21 19:18:03,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2021-10-21 19:18:03,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3600. [2021-10-21 19:18:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3598 states have (on average 1.1625903279599779) internal successors, (4183), 3599 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 4183 transitions. [2021-10-21 19:18:03,986 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 4183 transitions. Word has length 270 [2021-10-21 19:18:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:03,986 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 4183 transitions. [2021-10-21 19:18:03,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 33 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 4183 transitions. [2021-10-21 19:18:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-10-21 19:18:03,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:03,988 INFO L512 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 1, 1] [2021-10-21 19:18:04,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-21 19:18:04,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:04,189 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:04,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:04,189 INFO L82 PathProgramCache]: Analyzing trace with hash 907618448, now seen corresponding path program 44 times [2021-10-21 19:18:04,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:04,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905831883] [2021-10-21 19:18:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:04,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:05,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:05,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905831883] [2021-10-21 19:18:05,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905831883] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:05,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672553398] [2021-10-21 19:18:05,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:18:05,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:05,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:05,088 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:05,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-21 19:18:07,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:18:07,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:18:07,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-21 19:18:07,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:08,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:08,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672553398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:08,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:08,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-10-21 19:18:08,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132768567] [2021-10-21 19:18:08,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-21 19:18:08,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:08,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-21 19:18:08,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-21 19:18:08,462 INFO L87 Difference]: Start difference. First operand 3600 states and 4183 transitions. Second operand has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:08,801 INFO L93 Difference]: Finished difference Result 7139 states and 8318 transitions. [2021-10-21 19:18:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-21 19:18:08,801 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2021-10-21 19:18:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:08,807 INFO L225 Difference]: With dead ends: 7139 [2021-10-21 19:18:08,807 INFO L226 Difference]: Without dead ends: 7138 [2021-10-21 19:18:08,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 761.5ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-10-21 19:18:08,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7138 states. [2021-10-21 19:18:08,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7138 to 3687. [2021-10-21 19:18:08,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3687 states, 3685 states have (on average 1.162822252374491) internal successors, (4285), 3686 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:08,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 4285 transitions. [2021-10-21 19:18:08,874 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 4285 transitions. Word has length 274 [2021-10-21 19:18:08,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:08,874 INFO L470 AbstractCegarLoop]: Abstraction has 3687 states and 4285 transitions. [2021-10-21 19:18:08,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:08,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 4285 transitions. [2021-10-21 19:18:08,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-10-21 19:18:08,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:08,877 INFO L512 BasicCegarLoop]: trace histogram [46, 45, 45, 32, 32, 32, 14, 14, 14, 1, 1] [2021-10-21 19:18:08,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:09,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:09,078 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:09,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:09,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1168277339, now seen corresponding path program 23 times [2021-10-21 19:18:09,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:09,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015059628] [2021-10-21 19:18:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:09,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5269 backedges. 1722 proven. 3040 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-10-21 19:18:09,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:09,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015059628] [2021-10-21 19:18:09,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015059628] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:09,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980213812] [2021-10-21 19:18:09,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:18:09,613 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:09,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:09,615 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:09,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-21 19:18:12,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-10-21 19:18:12,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:18:12,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-21 19:18:12,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5269 backedges. 1722 proven. 3040 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-10-21 19:18:13,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980213812] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:13,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:13,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-10-21 19:18:13,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003409970] [2021-10-21 19:18:13,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-10-21 19:18:13,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:13,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-10-21 19:18:13,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 19:18:13,061 INFO L87 Difference]: Start difference. First operand 3687 states and 4285 transitions. Second operand has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:13,171 INFO L93 Difference]: Finished difference Result 7195 states and 8392 transitions. [2021-10-21 19:18:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-21 19:18:13,171 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2021-10-21 19:18:13,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:13,174 INFO L225 Difference]: With dead ends: 7195 [2021-10-21 19:18:13,174 INFO L226 Difference]: Without dead ends: 3697 [2021-10-21 19:18:13,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 419.1ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-10-21 19:18:13,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-10-21 19:18:13,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3693. [2021-10-21 19:18:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3691 states have (on average 1.1625575724735844) internal successors, (4291), 3692 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 4291 transitions. [2021-10-21 19:18:13,235 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 4291 transitions. Word has length 276 [2021-10-21 19:18:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:13,236 INFO L470 AbstractCegarLoop]: Abstraction has 3693 states and 4291 transitions. [2021-10-21 19:18:13,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 4291 transitions. [2021-10-21 19:18:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-10-21 19:18:13,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:13,238 INFO L512 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1] [2021-10-21 19:18:13,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-21 19:18:13,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:13,439 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:13,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:13,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1920966903, now seen corresponding path program 45 times [2021-10-21 19:18:13,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:13,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027397964] [2021-10-21 19:18:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:13,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:14,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:14,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027397964] [2021-10-21 19:18:14,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027397964] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:14,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982429108] [2021-10-21 19:18:14,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:18:14,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:14,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:14,281 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:14,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-21 19:18:17,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-10-21 19:18:17,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:18:17,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-21 19:18:17,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:18,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982429108] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:18,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:18,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2021-10-21 19:18:18,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729046263] [2021-10-21 19:18:18,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-10-21 19:18:18,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:18,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-10-21 19:18:18,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-21 19:18:18,042 INFO L87 Difference]: Start difference. First operand 3693 states and 4291 transitions. Second operand has 49 states, 48 states have (on average 5.833333333333333) internal successors, (280), 48 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:18,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:18,469 INFO L93 Difference]: Finished difference Result 7321 states and 8530 transitions. [2021-10-21 19:18:18,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-21 19:18:18,470 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 5.833333333333333) internal successors, (280), 48 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2021-10-21 19:18:18,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:18,476 INFO L225 Difference]: With dead ends: 7321 [2021-10-21 19:18:18,476 INFO L226 Difference]: Without dead ends: 7320 [2021-10-21 19:18:18,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 721.9ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-10-21 19:18:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2021-10-21 19:18:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 3780. [2021-10-21 19:18:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3778 states have (on average 1.1627845420857597) internal successors, (4393), 3779 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 4393 transitions. [2021-10-21 19:18:18,543 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 4393 transitions. Word has length 280 [2021-10-21 19:18:18,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:18,543 INFO L470 AbstractCegarLoop]: Abstraction has 3780 states and 4393 transitions. [2021-10-21 19:18:18,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 5.833333333333333) internal successors, (280), 48 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:18,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 4393 transitions. [2021-10-21 19:18:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-10-21 19:18:18,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:18,546 INFO L512 BasicCegarLoop]: trace histogram [47, 46, 46, 33, 33, 33, 14, 14, 14, 1, 1] [2021-10-21 19:18:18,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:18,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2021-10-21 19:18:18,747 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:18,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:18,747 INFO L82 PathProgramCache]: Analyzing trace with hash -724501282, now seen corresponding path program 24 times [2021-10-21 19:18:18,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:18,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636391638] [2021-10-21 19:18:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:18,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:19,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5516 backedges. 1775 proven. 3234 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-10-21 19:18:19,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:19,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636391638] [2021-10-21 19:18:19,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636391638] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:19,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120552480] [2021-10-21 19:18:19,303 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:18:19,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:19,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:19,306 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:19,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-21 19:18:22,261 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2021-10-21 19:18:22,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:18:22,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:18:22,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5516 backedges. 2045 proven. 619 refuted. 0 times theorem prover too weak. 2852 trivial. 0 not checked. [2021-10-21 19:18:23,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120552480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:23,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:23,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 52 [2021-10-21 19:18:23,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892999261] [2021-10-21 19:18:23,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-21 19:18:23,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:23,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-21 19:18:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-21 19:18:23,238 INFO L87 Difference]: Start difference. First operand 3780 states and 4393 transitions. Second operand has 52 states, 52 states have (on average 5.9423076923076925) internal successors, (309), 52 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:23,467 INFO L93 Difference]: Finished difference Result 7805 states and 9165 transitions. [2021-10-21 19:18:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-21 19:18:23,468 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.9423076923076925) internal successors, (309), 52 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2021-10-21 19:18:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:23,471 INFO L225 Difference]: With dead ends: 7805 [2021-10-21 19:18:23,471 INFO L226 Difference]: Without dead ends: 4220 [2021-10-21 19:18:23,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 889.7ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-21 19:18:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2021-10-21 19:18:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 4188. [2021-10-21 19:18:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4186 states have (on average 1.1624462494027712) internal successors, (4866), 4187 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:23,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 4866 transitions. [2021-10-21 19:18:23,551 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 4866 transitions. Word has length 282 [2021-10-21 19:18:23,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:23,551 INFO L470 AbstractCegarLoop]: Abstraction has 4188 states and 4866 transitions. [2021-10-21 19:18:23,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.9423076923076925) internal successors, (309), 52 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:23,552 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 4866 transitions. [2021-10-21 19:18:23,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-10-21 19:18:23,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:23,554 INFO L512 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1] [2021-10-21 19:18:23,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-21 19:18:23,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:23,755 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:23,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:23,755 INFO L82 PathProgramCache]: Analyzing trace with hash 217650882, now seen corresponding path program 46 times [2021-10-21 19:18:23,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:23,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791882577] [2021-10-21 19:18:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:23,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:24,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:24,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791882577] [2021-10-21 19:18:24,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791882577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:24,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906470020] [2021-10-21 19:18:24,730 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:18:24,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:24,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:24,731 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:24,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-21 19:18:27,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:18:27,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:18:27,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-21 19:18:27,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:28,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906470020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:28,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:28,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2021-10-21 19:18:28,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822264372] [2021-10-21 19:18:28,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-21 19:18:28,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:28,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-21 19:18:28,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-21 19:18:28,412 INFO L87 Difference]: Start difference. First operand 4188 states and 4866 transitions. Second operand has 50 states, 49 states have (on average 5.836734693877551) internal successors, (286), 49 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:28,782 INFO L93 Difference]: Finished difference Result 8307 states and 9678 transitions. [2021-10-21 19:18:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-21 19:18:28,782 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 5.836734693877551) internal successors, (286), 49 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 286 [2021-10-21 19:18:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:28,789 INFO L225 Difference]: With dead ends: 8307 [2021-10-21 19:18:28,789 INFO L226 Difference]: Without dead ends: 8306 [2021-10-21 19:18:28,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 800.0ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-21 19:18:28,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8306 states. [2021-10-21 19:18:28,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8306 to 4287. [2021-10-21 19:18:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4287 states, 4285 states have (on average 1.1626604434072345) internal successors, (4982), 4286 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:28,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4287 states to 4287 states and 4982 transitions. [2021-10-21 19:18:28,953 INFO L78 Accepts]: Start accepts. Automaton has 4287 states and 4982 transitions. Word has length 286 [2021-10-21 19:18:28,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:28,954 INFO L470 AbstractCegarLoop]: Abstraction has 4287 states and 4982 transitions. [2021-10-21 19:18:28,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 5.836734693877551) internal successors, (286), 49 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4287 states and 4982 transitions. [2021-10-21 19:18:28,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-10-21 19:18:28,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:28,957 INFO L512 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1] [2021-10-21 19:18:28,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-21 19:18:29,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:29,157 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:29,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:29,158 INFO L82 PathProgramCache]: Analyzing trace with hash -517120069, now seen corresponding path program 47 times [2021-10-21 19:18:29,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:29,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695054541] [2021-10-21 19:18:29,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:29,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:30,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:30,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695054541] [2021-10-21 19:18:30,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695054541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:30,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054527248] [2021-10-21 19:18:30,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:18:30,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:30,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:30,150 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:30,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-21 19:18:33,329 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-10-21 19:18:33,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:18:33,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-21 19:18:33,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:34,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054527248] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:34,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:34,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-10-21 19:18:34,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661056167] [2021-10-21 19:18:34,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-21 19:18:34,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:34,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-21 19:18:34,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-21 19:18:34,090 INFO L87 Difference]: Start difference. First operand 4287 states and 4982 transitions. Second operand has 51 states, 50 states have (on average 5.84) internal successors, (292), 50 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:34,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:34,484 INFO L93 Difference]: Finished difference Result 8507 states and 9912 transitions. [2021-10-21 19:18:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-21 19:18:34,485 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 5.84) internal successors, (292), 50 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2021-10-21 19:18:34,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:34,491 INFO L225 Difference]: With dead ends: 8507 [2021-10-21 19:18:34,491 INFO L226 Difference]: Without dead ends: 8506 [2021-10-21 19:18:34,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 837.3ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-21 19:18:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8506 states. [2021-10-21 19:18:34,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8506 to 4386. [2021-10-21 19:18:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4384 states have (on average 1.1628649635036497) internal successors, (5098), 4385 states have internal predecessors, (5098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 5098 transitions. [2021-10-21 19:18:34,605 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 5098 transitions. Word has length 292 [2021-10-21 19:18:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:34,605 INFO L470 AbstractCegarLoop]: Abstraction has 4386 states and 5098 transitions. [2021-10-21 19:18:34,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 5.84) internal successors, (292), 50 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 5098 transitions. [2021-10-21 19:18:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-10-21 19:18:34,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:34,608 INFO L512 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 1, 1] [2021-10-21 19:18:34,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-10-21 19:18:34,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:34,808 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:34,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:34,809 INFO L82 PathProgramCache]: Analyzing trace with hash -218412556, now seen corresponding path program 48 times [2021-10-21 19:18:34,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:34,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395443736] [2021-10-21 19:18:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:34,809 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:35,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:35,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395443736] [2021-10-21 19:18:35,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395443736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:35,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917487306] [2021-10-21 19:18:35,833 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:18:35,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:35,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:35,834 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:35,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-21 19:18:39,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2021-10-21 19:18:39,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:18:39,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-21 19:18:39,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:39,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917487306] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:39,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:39,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-10-21 19:18:39,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434837902] [2021-10-21 19:18:39,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-10-21 19:18:39,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:39,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-10-21 19:18:39,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-21 19:18:39,711 INFO L87 Difference]: Start difference. First operand 4386 states and 5098 transitions. Second operand has 52 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 51 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:40,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:40,162 INFO L93 Difference]: Finished difference Result 8707 states and 10146 transitions. [2021-10-21 19:18:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-21 19:18:40,162 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 51 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2021-10-21 19:18:40,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:40,169 INFO L225 Difference]: With dead ends: 8707 [2021-10-21 19:18:40,170 INFO L226 Difference]: Without dead ends: 8706 [2021-10-21 19:18:40,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 841.6ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-10-21 19:18:40,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8706 states. [2021-10-21 19:18:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8706 to 4485. [2021-10-21 19:18:40,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4483 states have (on average 1.163060450591122) internal successors, (5214), 4484 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 5214 transitions. [2021-10-21 19:18:40,252 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 5214 transitions. Word has length 298 [2021-10-21 19:18:40,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:40,253 INFO L470 AbstractCegarLoop]: Abstraction has 4485 states and 5214 transitions. [2021-10-21 19:18:40,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 51 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:40,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 5214 transitions. [2021-10-21 19:18:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-10-21 19:18:40,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:40,256 INFO L512 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 1, 1] [2021-10-21 19:18:40,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-21 19:18:40,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:40,458 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:40,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:40,458 INFO L82 PathProgramCache]: Analyzing trace with hash -260774547, now seen corresponding path program 49 times [2021-10-21 19:18:40,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:40,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499849575] [2021-10-21 19:18:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:40,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:41,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:41,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499849575] [2021-10-21 19:18:41,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499849575] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:41,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040967946] [2021-10-21 19:18:41,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:18:41,575 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:41,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:41,576 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:41,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-21 19:18:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:44,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 52 conjunts are in the unsatisfiable core [2021-10-21 19:18:44,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:45,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040967946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:45,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:45,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2021-10-21 19:18:45,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095447411] [2021-10-21 19:18:45,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-10-21 19:18:45,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:45,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-10-21 19:18:45,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-21 19:18:45,494 INFO L87 Difference]: Start difference. First operand 4485 states and 5214 transitions. Second operand has 53 states, 52 states have (on average 5.846153846153846) internal successors, (304), 52 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:45,954 INFO L93 Difference]: Finished difference Result 8907 states and 10380 transitions. [2021-10-21 19:18:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-21 19:18:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 5.846153846153846) internal successors, (304), 52 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2021-10-21 19:18:45,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:45,962 INFO L225 Difference]: With dead ends: 8907 [2021-10-21 19:18:45,962 INFO L226 Difference]: Without dead ends: 8906 [2021-10-21 19:18:45,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 959.2ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-10-21 19:18:45,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8906 states. [2021-10-21 19:18:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8906 to 4584. [2021-10-21 19:18:46,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4584 states, 4582 states have (on average 1.1632474901789611) internal successors, (5330), 4583 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4584 states to 4584 states and 5330 transitions. [2021-10-21 19:18:46,053 INFO L78 Accepts]: Start accepts. Automaton has 4584 states and 5330 transitions. Word has length 304 [2021-10-21 19:18:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:46,053 INFO L470 AbstractCegarLoop]: Abstraction has 4584 states and 5330 transitions. [2021-10-21 19:18:46,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 5.846153846153846) internal successors, (304), 52 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 4584 states and 5330 transitions. [2021-10-21 19:18:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-10-21 19:18:46,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:46,057 INFO L512 BasicCegarLoop]: trace histogram [51, 50, 50, 35, 35, 35, 16, 16, 16, 1, 1] [2021-10-21 19:18:46,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:46,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-10-21 19:18:46,258 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:46,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:46,259 INFO L82 PathProgramCache]: Analyzing trace with hash 255768502, now seen corresponding path program 25 times [2021-10-21 19:18:46,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:46,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071888379] [2021-10-21 19:18:46,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:46,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 2165 proven. 3640 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-10-21 19:18:46,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:46,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071888379] [2021-10-21 19:18:46,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071888379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:46,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127579937] [2021-10-21 19:18:46,898 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:18:46,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:46,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:46,899 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:46,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-21 19:18:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:50,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-21 19:18:50,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:50,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 2165 proven. 3640 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-10-21 19:18:50,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127579937] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:50,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:50,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-10-21 19:18:50,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603043439] [2021-10-21 19:18:50,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-21 19:18:50,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:50,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-21 19:18:50,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-21 19:18:50,956 INFO L87 Difference]: Start difference. First operand 4584 states and 5330 transitions. Second operand has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:51,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:51,088 INFO L93 Difference]: Finished difference Result 8971 states and 10464 transitions. [2021-10-21 19:18:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-21 19:18:51,089 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2021-10-21 19:18:51,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:51,092 INFO L225 Difference]: With dead ends: 8971 [2021-10-21 19:18:51,092 INFO L226 Difference]: Without dead ends: 4594 [2021-10-21 19:18:51,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 518.4ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-10-21 19:18:51,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2021-10-21 19:18:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 4590. [2021-10-21 19:18:51,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 4588 states have (on average 1.163034001743679) internal successors, (5336), 4589 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 5336 transitions. [2021-10-21 19:18:51,213 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 5336 transitions. Word has length 306 [2021-10-21 19:18:51,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:51,213 INFO L470 AbstractCegarLoop]: Abstraction has 4590 states and 5336 transitions. [2021-10-21 19:18:51,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:51,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 5336 transitions. [2021-10-21 19:18:51,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-10-21 19:18:51,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:51,218 INFO L512 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 1, 1] [2021-10-21 19:18:51,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-10-21 19:18:51,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-10-21 19:18:51,418 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:51,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1780465114, now seen corresponding path program 50 times [2021-10-21 19:18:51,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:51,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840333997] [2021-10-21 19:18:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:51,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:52,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:52,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840333997] [2021-10-21 19:18:52,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840333997] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:52,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362457594] [2021-10-21 19:18:52,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:18:52,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:52,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:52,511 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:52,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-10-21 19:18:56,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:18:56,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:18:56,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-21 19:18:56,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:18:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:18:56,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362457594] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:56,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:18:56,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2021-10-21 19:18:56,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164910714] [2021-10-21 19:18:56,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-21 19:18:56,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:18:56,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-21 19:18:56,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-21 19:18:56,905 INFO L87 Difference]: Start difference. First operand 4590 states and 5336 transitions. Second operand has 54 states, 53 states have (on average 5.849056603773585) internal successors, (310), 53 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:57,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:18:57,338 INFO L93 Difference]: Finished difference Result 9113 states and 10620 transitions. [2021-10-21 19:18:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-21 19:18:57,338 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 5.849056603773585) internal successors, (310), 53 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2021-10-21 19:18:57,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:18:57,346 INFO L225 Difference]: With dead ends: 9113 [2021-10-21 19:18:57,346 INFO L226 Difference]: Without dead ends: 9112 [2021-10-21 19:18:57,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 915.1ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-10-21 19:18:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9112 states. [2021-10-21 19:18:57,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9112 to 4689. [2021-10-21 19:18:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4687 states have (on average 1.1632174098570514) internal successors, (5452), 4688 states have internal predecessors, (5452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 5452 transitions. [2021-10-21 19:18:57,486 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 5452 transitions. Word has length 310 [2021-10-21 19:18:57,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:18:57,486 INFO L470 AbstractCegarLoop]: Abstraction has 4689 states and 5452 transitions. [2021-10-21 19:18:57,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 5.849056603773585) internal successors, (310), 53 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:18:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 5452 transitions. [2021-10-21 19:18:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-10-21 19:18:57,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:18:57,490 INFO L512 BasicCegarLoop]: trace histogram [52, 51, 51, 36, 36, 36, 16, 16, 16, 1, 1] [2021-10-21 19:18:57,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-10-21 19:18:57,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:57,691 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:18:57,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:18:57,691 INFO L82 PathProgramCache]: Analyzing trace with hash 122014255, now seen corresponding path program 26 times [2021-10-21 19:18:57,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:18:57,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357667728] [2021-10-21 19:18:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:18:57,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:18:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:18:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6753 backedges. 2226 proven. 3852 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-10-21 19:18:58,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:18:58,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357667728] [2021-10-21 19:18:58,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357667728] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:18:58,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445031352] [2021-10-21 19:18:58,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:18:58,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:18:58,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:18:58,253 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:18:58,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-10-21 19:19:01,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:19:01,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:19:01,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-21 19:19:01,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6753 backedges. 2226 proven. 3852 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-10-21 19:19:02,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445031352] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:02,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:19:02,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-10-21 19:19:02,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788036040] [2021-10-21 19:19:02,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-10-21 19:19:02,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:02,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-10-21 19:19:02,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-21 19:19:02,522 INFO L87 Difference]: Start difference. First operand 4689 states and 5452 transitions. Second operand has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 38 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:02,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:02,649 INFO L93 Difference]: Finished difference Result 9175 states and 10702 transitions. [2021-10-21 19:19:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-21 19:19:02,652 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 38 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 312 [2021-10-21 19:19:02,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:02,656 INFO L225 Difference]: With dead ends: 9175 [2021-10-21 19:19:02,656 INFO L226 Difference]: Without dead ends: 4699 [2021-10-21 19:19:02,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 450.8ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-10-21 19:19:02,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4699 states. [2021-10-21 19:19:02,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4699 to 4695. [2021-10-21 19:19:02,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4693 states have (on average 1.1630087364159387) internal successors, (5458), 4694 states have internal predecessors, (5458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 5458 transitions. [2021-10-21 19:19:02,787 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 5458 transitions. Word has length 312 [2021-10-21 19:19:02,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:02,787 INFO L470 AbstractCegarLoop]: Abstraction has 4695 states and 5458 transitions. [2021-10-21 19:19:02,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 38 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:02,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 5458 transitions. [2021-10-21 19:19:02,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-10-21 19:19:02,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:02,790 INFO L512 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 1, 1] [2021-10-21 19:19:02,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-10-21 19:19:02,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:02,991 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:19:02,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:02,991 INFO L82 PathProgramCache]: Analyzing trace with hash 917991455, now seen corresponding path program 51 times [2021-10-21 19:19:02,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:02,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756009445] [2021-10-21 19:19:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:02,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 0 proven. 8112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:19:04,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:04,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756009445] [2021-10-21 19:19:04,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756009445] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:04,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842078801] [2021-10-21 19:19:04,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:19:04,067 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:04,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:04,078 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:19:04,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-10-21 19:19:07,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2021-10-21 19:19:07,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:19:07,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 54 conjunts are in the unsatisfiable core [2021-10-21 19:19:07,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 0 proven. 8112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:19:08,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842078801] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:08,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:19:08,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2021-10-21 19:19:08,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314052139] [2021-10-21 19:19:08,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-10-21 19:19:08,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:08,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-10-21 19:19:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-21 19:19:08,776 INFO L87 Difference]: Start difference. First operand 4695 states and 5458 transitions. Second operand has 55 states, 54 states have (on average 5.851851851851852) internal successors, (316), 54 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:09,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:09,273 INFO L93 Difference]: Finished difference Result 9319 states and 10860 transitions. [2021-10-21 19:19:09,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-21 19:19:09,274 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 5.851851851851852) internal successors, (316), 54 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 316 [2021-10-21 19:19:09,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:09,282 INFO L225 Difference]: With dead ends: 9319 [2021-10-21 19:19:09,282 INFO L226 Difference]: Without dead ends: 9318 [2021-10-21 19:19:09,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 936.1ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-10-21 19:19:09,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9318 states. [2021-10-21 19:19:09,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9318 to 4794. [2021-10-21 19:19:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 4792 states have (on average 1.1631886477462436) internal successors, (5574), 4793 states have internal predecessors, (5574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 5574 transitions. [2021-10-21 19:19:09,408 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 5574 transitions. Word has length 316 [2021-10-21 19:19:09,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:09,408 INFO L470 AbstractCegarLoop]: Abstraction has 4794 states and 5574 transitions. [2021-10-21 19:19:09,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 5.851851851851852) internal successors, (316), 54 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 5574 transitions. [2021-10-21 19:19:09,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-10-21 19:19:09,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:09,412 INFO L512 BasicCegarLoop]: trace histogram [53, 52, 52, 37, 37, 37, 16, 16, 16, 1, 1] [2021-10-21 19:19:09,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-10-21 19:19:09,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-10-21 19:19:09,612 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:19:09,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:09,613 INFO L82 PathProgramCache]: Analyzing trace with hash -821469720, now seen corresponding path program 27 times [2021-10-21 19:19:09,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:09,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304520163] [2021-10-21 19:19:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:09,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7032 backedges. 2287 proven. 4070 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-10-21 19:19:10,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:10,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304520163] [2021-10-21 19:19:10,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304520163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:10,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738664396] [2021-10-21 19:19:10,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:19:10,225 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:10,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:10,226 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:19:10,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-10-21 19:19:13,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-10-21 19:19:13,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:19:13,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:19:13,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7032 backedges. 2589 proven. 803 refuted. 0 times theorem prover too weak. 3640 trivial. 0 not checked. [2021-10-21 19:19:15,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738664396] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:15,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:19:15,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 19] total 58 [2021-10-21 19:19:15,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610773456] [2021-10-21 19:19:15,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-10-21 19:19:15,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:15,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-10-21 19:19:15,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-21 19:19:15,170 INFO L87 Difference]: Start difference. First operand 4794 states and 5574 transitions. Second operand has 58 states, 58 states have (on average 5.948275862068965) internal successors, (345), 58 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:15,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:15,467 INFO L93 Difference]: Finished difference Result 9861 states and 11571 transitions. [2021-10-21 19:19:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-21 19:19:15,468 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.948275862068965) internal successors, (345), 58 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2021-10-21 19:19:15,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:15,472 INFO L225 Difference]: With dead ends: 9861 [2021-10-21 19:19:15,472 INFO L226 Difference]: Without dead ends: 5286 [2021-10-21 19:19:15,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1044.6ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-10-21 19:19:15,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2021-10-21 19:19:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 5250. [2021-10-21 19:19:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 5248 states have (on average 1.162919207317073) internal successors, (6103), 5249 states have internal predecessors, (6103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 6103 transitions. [2021-10-21 19:19:15,557 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 6103 transitions. Word has length 318 [2021-10-21 19:19:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:15,557 INFO L470 AbstractCegarLoop]: Abstraction has 5250 states and 6103 transitions. [2021-10-21 19:19:15,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.948275862068965) internal successors, (345), 58 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:15,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 6103 transitions. [2021-10-21 19:19:15,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-10-21 19:19:15,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:15,560 INFO L512 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 1, 1] [2021-10-21 19:19:15,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-10-21 19:19:15,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:15,761 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:19:15,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:15,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2035777704, now seen corresponding path program 52 times [2021-10-21 19:19:15,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:15,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775434328] [2021-10-21 19:19:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:15,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8427 backedges. 0 proven. 8427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:19:16,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:16,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775434328] [2021-10-21 19:19:16,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775434328] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:16,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146592817] [2021-10-21 19:19:16,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:19:16,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:16,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:16,926 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:19:16,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-10-21 19:19:20,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:19:20,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:19:20,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-21 19:19:20,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 8427 backedges. 8419 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-21 19:19:23,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146592817] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:19:23,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:19:23,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [54] total 107 [2021-10-21 19:19:23,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481696523] [2021-10-21 19:19:23,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-10-21 19:19:23,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:23,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-10-21 19:19:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2970, Invalid=8586, Unknown=0, NotChecked=0, Total=11556 [2021-10-21 19:19:23,642 INFO L87 Difference]: Start difference. First operand 5250 states and 6103 transitions. Second operand has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:24,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:24,054 INFO L93 Difference]: Finished difference Result 6823 states and 7965 transitions. [2021-10-21 19:19:24,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-21 19:19:24,055 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 322 [2021-10-21 19:19:24,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:24,056 INFO L225 Difference]: With dead ends: 6823 [2021-10-21 19:19:24,056 INFO L226 Difference]: Without dead ends: 1804 [2021-10-21 19:19:24,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 2992.7ms TimeCoverageRelationStatistics Valid=2970, Invalid=8586, Unknown=0, NotChecked=0, Total=11556 [2021-10-21 19:19:24,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2021-10-21 19:19:24,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 415. [2021-10-21 19:19:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.0314009661835748) internal successors, (427), 414 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:24,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 427 transitions. [2021-10-21 19:19:24,074 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 427 transitions. Word has length 322 [2021-10-21 19:19:24,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:24,074 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 427 transitions. [2021-10-21 19:19:24,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:24,074 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 427 transitions. [2021-10-21 19:19:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-10-21 19:19:24,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:24,076 INFO L512 BasicCegarLoop]: trace histogram [57, 56, 56, 39, 39, 39, 18, 18, 18, 1, 1] [2021-10-21 19:19:24,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-10-21 19:19:24,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:24,277 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:19:24,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:24,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1246320448, now seen corresponding path program 28 times [2021-10-21 19:19:24,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:24,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795450633] [2021-10-21 19:19:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:24,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8116 backedges. 2725 proven. 4524 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-10-21 19:19:24,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:24,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795450633] [2021-10-21 19:19:24,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795450633] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:24,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794906765] [2021-10-21 19:19:24,978 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:19:24,978 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:24,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:24,978 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:19:24,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-10-21 19:19:28,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:19:28,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:19:28,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-21 19:19:28,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8116 backedges. 2725 proven. 4524 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-10-21 19:19:29,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794906765] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:29,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:19:29,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-10-21 19:19:29,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881971557] [2021-10-21 19:19:29,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-10-21 19:19:29,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-10-21 19:19:29,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-21 19:19:29,769 INFO L87 Difference]: Start difference. First operand 415 states and 427 transitions. Second operand has 42 states, 42 states have (on average 5.809523809523809) internal successors, (244), 41 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:29,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:29,904 INFO L93 Difference]: Finished difference Result 521 states and 533 transitions. [2021-10-21 19:19:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-21 19:19:29,905 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.809523809523809) internal successors, (244), 41 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 342 [2021-10-21 19:19:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:29,905 INFO L225 Difference]: With dead ends: 521 [2021-10-21 19:19:29,905 INFO L226 Difference]: Without dead ends: 415 [2021-10-21 19:19:29,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 561.9ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-10-21 19:19:29,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-10-21 19:19:29,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-10-21 19:19:29,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.0289855072463767) internal successors, (426), 414 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 426 transitions. [2021-10-21 19:19:29,913 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 426 transitions. Word has length 342 [2021-10-21 19:19:29,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:29,914 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 426 transitions. [2021-10-21 19:19:29,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.809523809523809) internal successors, (244), 41 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 426 transitions. [2021-10-21 19:19:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2021-10-21 19:19:29,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:29,917 INFO L512 BasicCegarLoop]: trace histogram [58, 57, 57, 40, 40, 40, 18, 18, 18, 1, 1] [2021-10-21 19:19:29,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-10-21 19:19:30,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-10-21 19:19:30,117 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:19:30,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:30,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1922059591, now seen corresponding path program 29 times [2021-10-21 19:19:30,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:30,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967370024] [2021-10-21 19:19:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:30,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 8421 backedges. 2794 proven. 4760 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-10-21 19:19:30,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:30,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967370024] [2021-10-21 19:19:30,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967370024] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:30,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177241338] [2021-10-21 19:19:30,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:19:30,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:30,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:30,961 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:19:30,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-10-21 19:19:35,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-10-21 19:19:35,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:19:35,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-21 19:19:35,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8421 backedges. 2794 proven. 4760 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-10-21 19:19:35,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177241338] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:35,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:19:35,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-10-21 19:19:35,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343079637] [2021-10-21 19:19:35,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-10-21 19:19:35,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:35,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-10-21 19:19:35,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-21 19:19:35,818 INFO L87 Difference]: Start difference. First operand 415 states and 426 transitions. Second operand has 43 states, 43 states have (on average 5.813953488372093) internal successors, (250), 42 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:35,942 INFO L93 Difference]: Finished difference Result 521 states and 532 transitions. [2021-10-21 19:19:35,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-21 19:19:35,943 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.813953488372093) internal successors, (250), 42 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2021-10-21 19:19:35,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:35,984 INFO L225 Difference]: With dead ends: 521 [2021-10-21 19:19:35,984 INFO L226 Difference]: Without dead ends: 415 [2021-10-21 19:19:35,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 598.6ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-10-21 19:19:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-10-21 19:19:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-10-21 19:19:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.0265700483091786) internal successors, (425), 414 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 425 transitions. [2021-10-21 19:19:35,991 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 425 transitions. Word has length 348 [2021-10-21 19:19:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:35,991 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 425 transitions. [2021-10-21 19:19:35,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.813953488372093) internal successors, (250), 42 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 425 transitions. [2021-10-21 19:19:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2021-10-21 19:19:35,993 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:35,993 INFO L512 BasicCegarLoop]: trace histogram [59, 58, 58, 41, 41, 41, 18, 18, 18, 1, 1] [2021-10-21 19:19:36,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-10-21 19:19:36,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-10-21 19:19:36,193 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:19:36,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:36,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2106745358, now seen corresponding path program 30 times [2021-10-21 19:19:36,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:36,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378641444] [2021-10-21 19:19:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:36,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8732 backedges. 2863 proven. 5002 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-10-21 19:19:36,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:36,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378641444] [2021-10-21 19:19:36,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378641444] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:36,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563823398] [2021-10-21 19:19:36,940 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:19:36,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:36,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:36,941 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:19:36,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-21 19:19:41,021 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-10-21 19:19:41,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:19:41,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:19:41,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8732 backedges. 3197 proven. 1011 refuted. 0 times theorem prover too weak. 4524 trivial. 0 not checked. [2021-10-21 19:19:42,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563823398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:42,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:19:42,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 21] total 64 [2021-10-21 19:19:42,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504375221] [2021-10-21 19:19:42,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-21 19:19:42,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:42,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-21 19:19:42,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-21 19:19:42,475 INFO L87 Difference]: Start difference. First operand 415 states and 425 transitions. Second operand has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:42,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:42,759 INFO L93 Difference]: Finished difference Result 534 states and 546 transitions. [2021-10-21 19:19:42,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-21 19:19:42,760 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 354 [2021-10-21 19:19:42,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:42,760 INFO L225 Difference]: With dead ends: 534 [2021-10-21 19:19:42,760 INFO L226 Difference]: Without dead ends: 428 [2021-10-21 19:19:42,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1256.9ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-10-21 19:19:42,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-21 19:19:42,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2021-10-21 19:19:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.0211267605633803) internal successors, (435), 426 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 435 transitions. [2021-10-21 19:19:42,768 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 435 transitions. Word has length 354 [2021-10-21 19:19:42,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:42,768 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 435 transitions. [2021-10-21 19:19:42,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 435 transitions. [2021-10-21 19:19:42,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-10-21 19:19:42,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:42,771 INFO L512 BasicCegarLoop]: trace histogram [63, 62, 62, 43, 43, 43, 20, 20, 20, 1, 1] [2021-10-21 19:19:42,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-21 19:19:42,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-10-21 19:19:42,971 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:19:42,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:42,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1988655306, now seen corresponding path program 31 times [2021-10-21 19:19:42,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:42,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403377619] [2021-10-21 19:19:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:42,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9936 backedges. 3349 proven. 5504 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-10-21 19:19:43,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:43,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403377619] [2021-10-21 19:19:43,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403377619] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:43,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894430227] [2021-10-21 19:19:43,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:19:43,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:43,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:43,797 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:19:43,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-10-21 19:19:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:48,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 45 conjunts are in the unsatisfiable core [2021-10-21 19:19:48,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:48,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9936 backedges. 3349 proven. 5504 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-10-21 19:19:48,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894430227] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:48,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:19:48,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-10-21 19:19:48,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167142579] [2021-10-21 19:19:48,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-21 19:19:48,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:48,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-21 19:19:48,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-21 19:19:48,862 INFO L87 Difference]: Start difference. First operand 427 states and 435 transitions. Second operand has 46 states, 46 states have (on average 5.826086956521739) internal successors, (268), 45 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:49,005 INFO L93 Difference]: Finished difference Result 545 states and 553 transitions. [2021-10-21 19:19:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-21 19:19:49,005 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.826086956521739) internal successors, (268), 45 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 378 [2021-10-21 19:19:49,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:49,006 INFO L225 Difference]: With dead ends: 545 [2021-10-21 19:19:49,006 INFO L226 Difference]: Without dead ends: 427 [2021-10-21 19:19:49,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 700.3ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-10-21 19:19:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-10-21 19:19:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-10-21 19:19:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.0187793427230047) internal successors, (434), 426 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 434 transitions. [2021-10-21 19:19:49,016 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 434 transitions. Word has length 378 [2021-10-21 19:19:49,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:49,017 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 434 transitions. [2021-10-21 19:19:49,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.826086956521739) internal successors, (268), 45 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:49,017 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 434 transitions. [2021-10-21 19:19:49,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-10-21 19:19:49,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:49,020 INFO L512 BasicCegarLoop]: trace histogram [64, 63, 63, 44, 44, 44, 20, 20, 20, 1, 1] [2021-10-21 19:19:49,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-10-21 19:19:49,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-10-21 19:19:49,235 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:19:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:49,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1435649469, now seen corresponding path program 32 times [2021-10-21 19:19:49,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:49,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498789356] [2021-10-21 19:19:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:49,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10273 backedges. 3426 proven. 5764 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-10-21 19:19:50,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:50,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498789356] [2021-10-21 19:19:50,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498789356] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:50,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965953561] [2021-10-21 19:19:50,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:19:50,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:50,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:50,024 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:19:50,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-21 19:19:54,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:19:54,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:19:54,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 46 conjunts are in the unsatisfiable core [2021-10-21 19:19:54,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:19:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10273 backedges. 3426 proven. 5764 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-10-21 19:19:55,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965953561] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:55,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:19:55,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-10-21 19:19:55,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024012261] [2021-10-21 19:19:55,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-10-21 19:19:55,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:19:55,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-10-21 19:19:55,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-21 19:19:55,221 INFO L87 Difference]: Start difference. First operand 427 states and 434 transitions. Second operand has 47 states, 47 states have (on average 5.829787234042553) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:55,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:19:55,387 INFO L93 Difference]: Finished difference Result 545 states and 552 transitions. [2021-10-21 19:19:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-21 19:19:55,387 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.829787234042553) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2021-10-21 19:19:55,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:19:55,388 INFO L225 Difference]: With dead ends: 545 [2021-10-21 19:19:55,388 INFO L226 Difference]: Without dead ends: 427 [2021-10-21 19:19:55,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 652.2ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-10-21 19:19:55,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-10-21 19:19:55,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-10-21 19:19:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.016431924882629) internal successors, (433), 426 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 433 transitions. [2021-10-21 19:19:55,395 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 433 transitions. Word has length 384 [2021-10-21 19:19:55,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:19:55,395 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 433 transitions. [2021-10-21 19:19:55,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.829787234042553) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:19:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 433 transitions. [2021-10-21 19:19:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-10-21 19:19:55,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:19:55,397 INFO L512 BasicCegarLoop]: trace histogram [65, 64, 64, 45, 45, 45, 20, 20, 20, 1, 1] [2021-10-21 19:19:55,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-21 19:19:55,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:55,598 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:19:55,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:19:55,598 INFO L82 PathProgramCache]: Analyzing trace with hash 342899964, now seen corresponding path program 33 times [2021-10-21 19:19:55,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:19:55,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173445707] [2021-10-21 19:19:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:19:55,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:19:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:19:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 10616 backedges. 3503 proven. 6030 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-10-21 19:19:56,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:19:56,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173445707] [2021-10-21 19:19:56,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173445707] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:19:56,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534504708] [2021-10-21 19:19:56,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:19:56,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:19:56,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:19:56,450 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:19:56,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-10-21 19:20:00,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-21 19:20:00,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:20:00,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:20:00,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:20:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10616 backedges. 3869 proven. 1243 refuted. 0 times theorem prover too weak. 5504 trivial. 0 not checked. [2021-10-21 19:20:02,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534504708] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:02,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:20:02,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 23] total 70 [2021-10-21 19:20:02,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009129887] [2021-10-21 19:20:02,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-10-21 19:20:02,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:20:02,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-10-21 19:20:02,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-21 19:20:02,505 INFO L87 Difference]: Start difference. First operand 427 states and 433 transitions. Second operand has 70 states, 70 states have (on average 5.957142857142857) internal successors, (417), 70 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:02,868 INFO L93 Difference]: Finished difference Result 558 states and 566 transitions. [2021-10-21 19:20:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-10-21 19:20:02,869 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.957142857142857) internal successors, (417), 70 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 390 [2021-10-21 19:20:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:02,869 INFO L225 Difference]: With dead ends: 558 [2021-10-21 19:20:02,869 INFO L226 Difference]: Without dead ends: 440 [2021-10-21 19:20:02,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1486.9ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-10-21 19:20:02,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-21 19:20:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 439. [2021-10-21 19:20:02,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.0114155251141552) internal successors, (443), 438 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 443 transitions. [2021-10-21 19:20:02,877 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 443 transitions. Word has length 390 [2021-10-21 19:20:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:02,877 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 443 transitions. [2021-10-21 19:20:02,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.957142857142857) internal successors, (417), 70 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:02,878 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 443 transitions. [2021-10-21 19:20:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-10-21 19:20:02,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:02,880 INFO L512 BasicCegarLoop]: trace histogram [69, 68, 68, 47, 47, 47, 22, 22, 22, 1, 1] [2021-10-21 19:20:02,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-10-21 19:20:03,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:03,083 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:20:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:03,083 INFO L82 PathProgramCache]: Analyzing trace with hash 388409300, now seen corresponding path program 34 times [2021-10-21 19:20:03,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:20:03,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061338030] [2021-10-21 19:20:03,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:03,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:20:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11940 backedges. 4037 proven. 6580 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-10-21 19:20:04,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:20:04,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061338030] [2021-10-21 19:20:04,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061338030] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:04,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797324538] [2021-10-21 19:20:04,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:20:04,018 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:04,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:20:04,019 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:20:04,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-10-21 19:20:08,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:20:08,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:20:08,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-21 19:20:08,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:20:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 11940 backedges. 4037 proven. 6580 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-10-21 19:20:09,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797324538] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:09,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:20:09,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-10-21 19:20:09,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6294329] [2021-10-21 19:20:09,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-10-21 19:20:09,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:20:09,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-10-21 19:20:09,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-21 19:20:09,556 INFO L87 Difference]: Start difference. First operand 439 states and 443 transitions. Second operand has 50 states, 50 states have (on average 5.84) internal successors, (292), 49 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:09,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:09,708 INFO L93 Difference]: Finished difference Result 569 states and 573 transitions. [2021-10-21 19:20:09,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-21 19:20:09,709 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.84) internal successors, (292), 49 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 414 [2021-10-21 19:20:09,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:09,709 INFO L225 Difference]: With dead ends: 569 [2021-10-21 19:20:09,709 INFO L226 Difference]: Without dead ends: 439 [2021-10-21 19:20:09,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 741.3ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-10-21 19:20:09,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-10-21 19:20:09,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-10-21 19:20:09,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.0091324200913243) internal successors, (442), 438 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 442 transitions. [2021-10-21 19:20:09,717 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 442 transitions. Word has length 414 [2021-10-21 19:20:09,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:09,718 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 442 transitions. [2021-10-21 19:20:09,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.84) internal successors, (292), 49 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 442 transitions. [2021-10-21 19:20:09,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2021-10-21 19:20:09,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:09,720 INFO L512 BasicCegarLoop]: trace histogram [70, 69, 69, 48, 48, 48, 22, 22, 22, 1, 1] [2021-10-21 19:20:09,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-10-21 19:20:09,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:09,920 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:20:09,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:09,921 INFO L82 PathProgramCache]: Analyzing trace with hash -476946227, now seen corresponding path program 35 times [2021-10-21 19:20:09,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:20:09,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287334505] [2021-10-21 19:20:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:09,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:20:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12309 backedges. 4122 proven. 6864 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-10-21 19:20:10,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:20:10,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287334505] [2021-10-21 19:20:10,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287334505] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:10,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550372802] [2021-10-21 19:20:10,946 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:20:10,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:10,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:20:10,946 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:20:10,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-10-21 19:20:15,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-10-21 19:20:15,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:20:15,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 50 conjunts are in the unsatisfiable core [2021-10-21 19:20:15,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:20:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12309 backedges. 4122 proven. 6864 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-10-21 19:20:16,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550372802] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:16,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:20:16,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-10-21 19:20:16,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763383387] [2021-10-21 19:20:16,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-10-21 19:20:16,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:20:16,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-10-21 19:20:16,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-21 19:20:16,607 INFO L87 Difference]: Start difference. First operand 439 states and 442 transitions. Second operand has 51 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:16,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:16,753 INFO L93 Difference]: Finished difference Result 569 states and 572 transitions. [2021-10-21 19:20:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-21 19:20:16,754 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 420 [2021-10-21 19:20:16,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:16,755 INFO L225 Difference]: With dead ends: 569 [2021-10-21 19:20:16,755 INFO L226 Difference]: Without dead ends: 439 [2021-10-21 19:20:16,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 836.9ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-10-21 19:20:16,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-10-21 19:20:16,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-10-21 19:20:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.0068493150684932) internal successors, (441), 438 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 441 transitions. [2021-10-21 19:20:16,762 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 441 transitions. Word has length 420 [2021-10-21 19:20:16,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:16,762 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 441 transitions. [2021-10-21 19:20:16,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:16,763 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 441 transitions. [2021-10-21 19:20:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-10-21 19:20:16,765 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:16,765 INFO L512 BasicCegarLoop]: trace histogram [71, 70, 70, 49, 49, 49, 22, 22, 22, 1, 1] [2021-10-21 19:20:16,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-10-21 19:20:16,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2021-10-21 19:20:16,966 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:20:16,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:16,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1648605958, now seen corresponding path program 36 times [2021-10-21 19:20:16,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:20:16,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267305106] [2021-10-21 19:20:16,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:16,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:20:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12684 backedges. 4207 proven. 7154 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-10-21 19:20:18,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:20:18,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267305106] [2021-10-21 19:20:18,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267305106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:18,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918512836] [2021-10-21 19:20:18,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:20:18,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:18,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:20:18,243 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:20:18,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-10-21 19:20:23,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 45 check-sat command(s) [2021-10-21 19:20:23,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:20:23,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 19:20:23,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:20:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12684 backedges. 4605 proven. 1499 refuted. 0 times theorem prover too weak. 6580 trivial. 0 not checked. [2021-10-21 19:20:24,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918512836] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:24,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:20:24,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 25] total 76 [2021-10-21 19:20:24,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036845033] [2021-10-21 19:20:24,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-10-21 19:20:24,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:20:24,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-10-21 19:20:24,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-21 19:20:24,930 INFO L87 Difference]: Start difference. First operand 439 states and 441 transitions. Second operand has 76 states, 76 states have (on average 5.9605263157894735) internal successors, (453), 76 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:25,354 INFO L93 Difference]: Finished difference Result 582 states and 586 transitions. [2021-10-21 19:20:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-21 19:20:25,354 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 5.9605263157894735) internal successors, (453), 76 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 426 [2021-10-21 19:20:25,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:25,355 INFO L225 Difference]: With dead ends: 582 [2021-10-21 19:20:25,355 INFO L226 Difference]: Without dead ends: 452 [2021-10-21 19:20:25,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1880.2ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-10-21 19:20:25,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-10-21 19:20:25,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 451. [2021-10-21 19:20:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.0022222222222221) internal successors, (451), 450 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2021-10-21 19:20:25,368 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 426 [2021-10-21 19:20:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:25,369 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2021-10-21 19:20:25,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 5.9605263157894735) internal successors, (453), 76 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2021-10-21 19:20:25,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-10-21 19:20:25,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:25,373 INFO L512 BasicCegarLoop]: trace histogram [75, 74, 74, 51, 51, 51, 24, 24, 24, 1, 1] [2021-10-21 19:20:25,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-10-21 19:20:25,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:25,586 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:20:25,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:25,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1799113250, now seen corresponding path program 37 times [2021-10-21 19:20:25,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:20:25,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98949681] [2021-10-21 19:20:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:25,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:20:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 14128 backedges. 0 proven. 14128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:27,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:20:27,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98949681] [2021-10-21 19:20:27,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98949681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:27,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173802114] [2021-10-21 19:20:27,666 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:20:27,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:27,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:20:27,667 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:20:27,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-10-21 19:20:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:32,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 76 conjunts are in the unsatisfiable core [2021-10-21 19:20:32,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:20:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14128 backedges. 0 proven. 14128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:33,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173802114] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:33,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:20:33,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2021-10-21 19:20:33,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927348456] [2021-10-21 19:20:33,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-10-21 19:20:33,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:20:33,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-10-21 19:20:33,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-21 19:20:33,792 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand has 77 states, 76 states have (on average 5.921052631578948) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:34,183 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2021-10-21 19:20:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-10-21 19:20:34,184 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 5.921052631578948) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 450 [2021-10-21 19:20:34,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:34,184 INFO L225 Difference]: With dead ends: 459 [2021-10-21 19:20:34,185 INFO L226 Difference]: Without dead ends: 458 [2021-10-21 19:20:34,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1839.7ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-10-21 19:20:34,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-21 19:20:34,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 457. [2021-10-21 19:20:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.0021929824561404) internal successors, (457), 456 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 457 transitions. [2021-10-21 19:20:34,192 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 457 transitions. Word has length 450 [2021-10-21 19:20:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:34,193 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 457 transitions. [2021-10-21 19:20:34,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 5.921052631578948) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 457 transitions. [2021-10-21 19:20:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2021-10-21 19:20:34,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:34,195 INFO L512 BasicCegarLoop]: trace histogram [76, 75, 75, 51, 51, 51, 25, 25, 25, 1, 1] [2021-10-21 19:20:34,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-10-21 19:20:34,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-10-21 19:20:34,396 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:20:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:34,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1017961519, now seen corresponding path program 38 times [2021-10-21 19:20:34,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:20:34,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096952793] [2021-10-21 19:20:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:34,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:20:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14475 backedges. 0 proven. 14475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:36,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:20:36,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096952793] [2021-10-21 19:20:36,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096952793] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:36,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564762983] [2021-10-21 19:20:36,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:20:36,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:36,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:20:36,514 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:20:36,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-21 19:20:41,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:20:41,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:20:41,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 77 conjunts are in the unsatisfiable core [2021-10-21 19:20:41,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:20:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 14475 backedges. 0 proven. 14475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:42,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564762983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:42,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:20:42,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2021-10-21 19:20:42,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563456758] [2021-10-21 19:20:42,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-10-21 19:20:42,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:20:42,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-10-21 19:20:42,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-21 19:20:42,707 INFO L87 Difference]: Start difference. First operand 457 states and 457 transitions. Second operand has 78 states, 77 states have (on average 5.922077922077922) internal successors, (456), 77 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:43,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:43,196 INFO L93 Difference]: Finished difference Result 465 states and 465 transitions. [2021-10-21 19:20:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-10-21 19:20:43,197 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 5.922077922077922) internal successors, (456), 77 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 456 [2021-10-21 19:20:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:43,198 INFO L225 Difference]: With dead ends: 465 [2021-10-21 19:20:43,198 INFO L226 Difference]: Without dead ends: 464 [2021-10-21 19:20:43,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1891.2ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-10-21 19:20:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-21 19:20:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 463. [2021-10-21 19:20:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.0021645021645023) internal successors, (463), 462 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:43,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 463 transitions. [2021-10-21 19:20:43,208 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 463 transitions. Word has length 456 [2021-10-21 19:20:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:43,208 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 463 transitions. [2021-10-21 19:20:43,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 5.922077922077922) internal successors, (456), 77 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:43,209 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 463 transitions. [2021-10-21 19:20:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-10-21 19:20:43,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:43,211 INFO L512 BasicCegarLoop]: trace histogram [77, 76, 76, 51, 51, 51, 26, 26, 26, 1, 1] [2021-10-21 19:20:43,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-10-21 19:20:43,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:43,412 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:20:43,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:43,412 INFO L82 PathProgramCache]: Analyzing trace with hash -932769916, now seen corresponding path program 39 times [2021-10-21 19:20:43,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:20:43,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455472527] [2021-10-21 19:20:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:43,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:20:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14828 backedges. 0 proven. 14828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:45,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:20:45,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455472527] [2021-10-21 19:20:45,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455472527] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:45,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95633229] [2021-10-21 19:20:45,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:20:45,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:45,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:20:45,745 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:20:45,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-10-21 19:20:51,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-10-21 19:20:51,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:20:51,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:20:51,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:20:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14828 backedges. 5402 proven. 1976 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2021-10-21 19:20:52,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95633229] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:52,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:20:52,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 28] total 78 [2021-10-21 19:20:52,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992694416] [2021-10-21 19:20:52,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-10-21 19:20:52,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:20:52,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-10-21 19:20:52,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-21 19:20:52,037 INFO L87 Difference]: Start difference. First operand 463 states and 463 transitions. Second operand has 79 states, 78 states have (on average 6.0256410256410255) internal successors, (470), 79 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:20:52,500 INFO L93 Difference]: Finished difference Result 471 states and 471 transitions. [2021-10-21 19:20:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-10-21 19:20:52,500 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 6.0256410256410255) internal successors, (470), 79 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 462 [2021-10-21 19:20:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:20:52,501 INFO L225 Difference]: With dead ends: 471 [2021-10-21 19:20:52,501 INFO L226 Difference]: Without dead ends: 470 [2021-10-21 19:20:52,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2060.5ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-10-21 19:20:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-21 19:20:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 469. [2021-10-21 19:20:52,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.0021367521367521) internal successors, (469), 468 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:52,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 469 transitions. [2021-10-21 19:20:52,517 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 469 transitions. Word has length 462 [2021-10-21 19:20:52,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:20:52,518 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 469 transitions. [2021-10-21 19:20:52,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 6.0256410256410255) internal successors, (470), 79 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:20:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 469 transitions. [2021-10-21 19:20:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-10-21 19:20:52,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:20:52,523 INFO L512 BasicCegarLoop]: trace histogram [78, 77, 77, 51, 51, 51, 27, 27, 27, 1, 1] [2021-10-21 19:20:52,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-10-21 19:20:52,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:52,739 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:20:52,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:20:52,739 INFO L82 PathProgramCache]: Analyzing trace with hash -929421065, now seen corresponding path program 40 times [2021-10-21 19:20:52,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:20:52,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766531918] [2021-10-21 19:20:52,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:20:52,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:20:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:20:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15187 backedges. 0 proven. 15187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:20:55,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:20:55,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766531918] [2021-10-21 19:20:55,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766531918] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:20:55,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327968813] [2021-10-21 19:20:55,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:20:55,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:20:55,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:20:55,285 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:20:55,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-10-21 19:21:00,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:21:00,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:21:00,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 79 conjunts are in the unsatisfiable core [2021-10-21 19:21:00,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 15187 backedges. 0 proven. 15187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:02,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327968813] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:21:02,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:21:02,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2021-10-21 19:21:02,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042983208] [2021-10-21 19:21:02,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-10-21 19:21:02,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-10-21 19:21:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-21 19:21:02,197 INFO L87 Difference]: Start difference. First operand 469 states and 469 transitions. Second operand has 80 states, 79 states have (on average 5.924050632911392) internal successors, (468), 79 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:02,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:02,588 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2021-10-21 19:21:02,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-10-21 19:21:02,588 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 5.924050632911392) internal successors, (468), 79 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 468 [2021-10-21 19:21:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:02,589 INFO L225 Difference]: With dead ends: 477 [2021-10-21 19:21:02,589 INFO L226 Difference]: Without dead ends: 476 [2021-10-21 19:21:02,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2162.1ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-10-21 19:21:02,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-21 19:21:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 475. [2021-10-21 19:21:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 1.0021097046413503) internal successors, (475), 474 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 475 transitions. [2021-10-21 19:21:02,598 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 475 transitions. Word has length 468 [2021-10-21 19:21:02,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:02,599 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 475 transitions. [2021-10-21 19:21:02,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 5.924050632911392) internal successors, (468), 79 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:02,599 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 475 transitions. [2021-10-21 19:21:02,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-10-21 19:21:02,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:02,601 INFO L512 BasicCegarLoop]: trace histogram [79, 78, 78, 51, 51, 51, 28, 28, 28, 1, 1] [2021-10-21 19:21:02,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-10-21 19:21:02,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:21:02,802 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:21:02,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:02,802 INFO L82 PathProgramCache]: Analyzing trace with hash -708632534, now seen corresponding path program 41 times [2021-10-21 19:21:02,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:02,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991332998] [2021-10-21 19:21:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:02,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15552 backedges. 0 proven. 15552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:05,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:05,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991332998] [2021-10-21 19:21:05,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991332998] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:21:05,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26379125] [2021-10-21 19:21:05,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:21:05,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:21:05,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:21:05,124 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:21:05,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-10-21 19:21:10,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2021-10-21 19:21:10,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:21:10,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 72 conjunts are in the unsatisfiable core [2021-10-21 19:21:10,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 15552 backedges. 3076 proven. 12292 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-10-21 19:21:14,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26379125] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:21:14,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:21:14,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 72] total 122 [2021-10-21 19:21:14,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025627066] [2021-10-21 19:21:14,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-10-21 19:21:14,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:14,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-10-21 19:21:14,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-21 19:21:14,653 INFO L87 Difference]: Start difference. First operand 475 states and 475 transitions. Second operand has 123 states, 122 states have (on average 6.713114754098361) internal successors, (819), 123 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:15,477 INFO L93 Difference]: Finished difference Result 735 states and 777 transitions. [2021-10-21 19:21:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-10-21 19:21:15,478 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 6.713114754098361) internal successors, (819), 123 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2021-10-21 19:21:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:15,479 INFO L225 Difference]: With dead ends: 735 [2021-10-21 19:21:15,479 INFO L226 Difference]: Without dead ends: 734 [2021-10-21 19:21:15,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4763.6ms TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-10-21 19:21:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-10-21 19:21:15,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 733. [2021-10-21 19:21:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 732 states have (on average 1.0013661202185793) internal successors, (733), 732 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:15,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 733 transitions. [2021-10-21 19:21:15,502 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 733 transitions. Word has length 474 [2021-10-21 19:21:15,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:15,503 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 733 transitions. [2021-10-21 19:21:15,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 6.713114754098361) internal successors, (819), 123 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 733 transitions. [2021-10-21 19:21:15,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2021-10-21 19:21:15,509 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:21:15,509 INFO L512 BasicCegarLoop]: trace histogram [122, 121, 121, 71, 71, 71, 51, 51, 51, 1, 1] [2021-10-21 19:21:15,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2021-10-21 19:21:15,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:21:15,715 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-21 19:21:15,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:21:15,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1229081285, now seen corresponding path program 42 times [2021-10-21 19:21:15,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:21:15,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611083839] [2021-10-21 19:21:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:21:15,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:21:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:21:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 36923 backedges. 0 proven. 36923 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:21:20,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:21:20,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611083839] [2021-10-21 19:21:20,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611083839] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:21:20,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803558590] [2021-10-21 19:21:20,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:21:20,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:21:20,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:21:21,004 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:21:21,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-10-21 19:21:26,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 72 check-sat command(s) [2021-10-21 19:21:26,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:21:26,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 123 conjunts are in the unsatisfiable core [2021-10-21 19:21:26,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:21:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 36923 backedges. 23969 proven. 12752 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-10-21 19:21:32,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803558590] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:21:32,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:21:32,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 72] total 194 [2021-10-21 19:21:32,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577789639] [2021-10-21 19:21:32,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2021-10-21 19:21:32,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:21:32,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2021-10-21 19:21:32,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10253, Invalid=27577, Unknown=0, NotChecked=0, Total=37830 [2021-10-21 19:21:32,789 INFO L87 Difference]: Start difference. First operand 733 states and 733 transitions. Second operand has 195 states, 195 states have (on average 6.733333333333333) internal successors, (1313), 194 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:21:45,549 INFO L93 Difference]: Finished difference Result 733 states and 733 transitions. [2021-10-21 19:21:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2021-10-21 19:21:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 195 states, 195 states have (on average 6.733333333333333) internal successors, (1313), 194 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 732 [2021-10-21 19:21:45,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:21:45,551 INFO L225 Difference]: With dead ends: 733 [2021-10-21 19:21:45,551 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:21:45,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35724 ImplicationChecksByTransitivity, 19058.6ms TimeCoverageRelationStatistics Valid=41435, Invalid=119767, Unknown=0, NotChecked=0, Total=161202 [2021-10-21 19:21:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:21:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:21:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:21:45,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 732 [2021-10-21 19:21:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:21:45,561 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:21:45,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 195 states, 195 states have (on average 6.733333333333333) internal successors, (1313), 194 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:21:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:21:45,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:21:45,565 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:21:45,566 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:21:45,566 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:21:45,566 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:21:45,566 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:21:45,566 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:21:45,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2021-10-21 19:21:45,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:21:45,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:21:45,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:21:46,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:21:49,858 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 19:21:49,858 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:21:49,858 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-21 19:21:49,858 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-21 19:21:49,858 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-10-21 19:21:49,858 INFO L857 garLoopResultBuilder]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2021-10-21 19:21:49,858 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 19:21:49,858 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-21 19:21:49,858 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:21:49,858 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-10-21 19:21:49,858 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:21:49,859 INFO L860 garLoopResultBuilder]: At program point L26(lines 14 27) the Hoare annotation is: true [2021-10-21 19:21:49,859 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-10-21 19:21:49,859 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-21 19:21:49,859 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-10-21 19:21:49,859 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-21 19:21:49,859 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-21 19:21:49,860 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse7 (<= ULTIMATE.start_main_~y~0 21)) (.cse4 (<= ULTIMATE.start_main_~y~0 32)) (.cse28 (<= ULTIMATE.start_main_~y~0 15)) (.cse36 (<= ULTIMATE.start_main_~y~0 8)) (.cse34 (<= ULTIMATE.start_main_~y~0 42)) (.cse37 (<= ULTIMATE.start_main_~y~0 40)) (.cse21 (<= ULTIMATE.start_main_~y~0 46)) (.cse12 (<= ULTIMATE.start_main_~y~0 7)) (.cse31 (<= ULTIMATE.start_main_~y~0 43)) (.cse27 (<= ULTIMATE.start_main_~y~0 20)) (.cse10 (<= ULTIMATE.start_main_~y~0 31)) (.cse35 (<= ULTIMATE.start_main_~y~0 36)) (.cse18 (<= ULTIMATE.start_main_~y~0 28)) (.cse40 (<= ULTIMATE.start_main_~y~0 18)) (.cse8 (<= ULTIMATE.start_main_~y~0 45)) (.cse17 (<= ULTIMATE.start_main_~y~0 10)) (.cse30 (<= ULTIMATE.start_main_~y~0 22)) (.cse43 (<= ULTIMATE.start_main_~y~0 3)) (.cse44 (<= ULTIMATE.start_main_~y~0 23)) (.cse6 (<= ULTIMATE.start_main_~y~0 27)) (.cse19 (<= ULTIMATE.start_main_~y~0 0)) (.cse45 (<= ULTIMATE.start_main_~y~0 26)) (.cse0 (<= ULTIMATE.start_main_~y~0 9)) (.cse15 (<= ULTIMATE.start_main_~y~0 24)) (.cse16 (<= ULTIMATE.start_main_~y~0 17)) (.cse9 (<= ULTIMATE.start_main_~y~0 30)) (.cse20 (<= ULTIMATE.start_main_~y~0 13)) (.cse14 (<= ULTIMATE.start_main_~y~0 37)) (.cse29 (<= ULTIMATE.start_main_~y~0 33)) (.cse39 (<= ULTIMATE.start_main_~y~0 38)) (.cse42 (<= ULTIMATE.start_main_~y~0 44)) (.cse41 (<= ULTIMATE.start_main_~y~0 14)) (.cse33 (<= ULTIMATE.start_main_~y~0 4)) (.cse11 (<= ULTIMATE.start_main_~y~0 11)) (.cse46 (<= ULTIMATE.start_main_~y~0 48)) (.cse32 (<= ULTIMATE.start_main_~y~0 39)) (.cse38 (<= ULTIMATE.start_main_~y~0 19)) (.cse13 (<= ULTIMATE.start_main_~y~0 6)) (.cse26 (<= ULTIMATE.start_main_~y~0 2)) (.cse47 (<= ULTIMATE.start_main_~y~0 1)) (.cse22 (<= ULTIMATE.start_main_~y~0 25)) (.cse48 (<= ULTIMATE.start_main_~y~0 12)) (.cse23 (<= ULTIMATE.start_main_~y~0 41)) (.cse50 (<= ULTIMATE.start_main_~y~0 50)) (.cse51 (<= ULTIMATE.start_main_~y~0 29)) (.cse49 (<= ULTIMATE.start_main_~y~0 5)) (.cse2 (<= ULTIMATE.start_main_~y~0 49)) (.cse5 (<= ULTIMATE.start_main_~y~0 34)) (.cse25 (<= ULTIMATE.start_main_~y~0 35)) (.cse3 (<= 51 ULTIMATE.start_main_~x~0)) (.cse52 (<= ULTIMATE.start_main_~y~0 16)) (.cse24 (<= ULTIMATE.start_main_~y~0 47)) (.cse1 (<= ULTIMATE.start_main_~x~0 51))) (or (and .cse0 .cse1 (<= 9 ULTIMATE.start_main_~x~0)) (and .cse2 (<= ULTIMATE.start_main_~x~0 53) .cse3) (and (<= 32 ULTIMATE.start_main_~x~0) .cse1 .cse4) (and .cse5 .cse6 .cse3 (<= ULTIMATE.start_main_~x~0 75)) (and .cse5 .cse7 (<= ULTIMATE.start_main_~x~0 81) .cse3) (and .cse8 (<= ULTIMATE.start_main_~x~0 57) .cse3) (and (<= 30 ULTIMATE.start_main_~x~0) .cse9 .cse1) (and (<= 21 ULTIMATE.start_main_~x~0) .cse7 .cse1) (and (<= 31 ULTIMATE.start_main_~x~0) .cse10 .cse1) (and (<= ULTIMATE.start_main_~x~0 91) .cse5 .cse3 .cse11) (and .cse12 .cse1 (<= 7 ULTIMATE.start_main_~x~0)) (and .cse13 .cse5 (<= ULTIMATE.start_main_~x~0 96) .cse3) (and .cse14 (<= 37 ULTIMATE.start_main_~x~0) .cse1) (and .cse15 .cse5 (<= ULTIMATE.start_main_~x~0 78) .cse3) (and .cse5 (<= ULTIMATE.start_main_~x~0 70) .cse3 .cse4) (and .cse16 (<= ULTIMATE.start_main_~x~0 85) .cse5 .cse3) (and .cse5 (<= ULTIMATE.start_main_~x~0 92) .cse3 .cse17) (and .cse5 (<= ULTIMATE.start_main_~x~0 74) .cse3 .cse18) (and .cse5 (<= (+ ULTIMATE.start_main_~y~0 1) 0) (<= ULTIMATE.start_main_~x~0 103) .cse3) (and .cse5 .cse19 .cse3 (<= ULTIMATE.start_main_~x~0 102)) (and .cse20 .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 89)) (and .cse21 (<= 46 ULTIMATE.start_main_~x~0) .cse1) (and (<= 25 ULTIMATE.start_main_~x~0) .cse22 (<= ULTIMATE.start_main_~x~0 25)) (and (<= 41 ULTIMATE.start_main_~x~0) .cse23 .cse1) (and (<= ULTIMATE.start_main_~x~0 55) .cse24 .cse3) (and .cse25 (<= 35 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 35)) (and .cse5 .cse26 .cse3 (<= ULTIMATE.start_main_~x~0 100)) (and (<= 20 ULTIMATE.start_main_~x~0) .cse27 .cse1) (and .cse28 .cse5 (<= ULTIMATE.start_main_~x~0 87) .cse3) (and .cse5 (<= 34 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 34)) (and .cse5 .cse29 (<= ULTIMATE.start_main_~x~0 69) .cse3) (and (<= ULTIMATE.start_main_~x~0 80) .cse5 .cse30 .cse3) (and .cse31 .cse1 (<= 43 ULTIMATE.start_main_~x~0)) (and .cse28 (<= 15 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~x~0 63) .cse32 .cse3) (and (<= 4 ULTIMATE.start_main_~x~0) .cse33 .cse1) (and .cse34 .cse1 (<= 42 ULTIMATE.start_main_~x~0)) (and .cse35 .cse1 (<= 36 ULTIMATE.start_main_~x~0)) (and .cse5 (<= ULTIMATE.start_main_~x~0 94) .cse3 .cse36) (and (<= 8 ULTIMATE.start_main_~x~0) .cse1 .cse36) (and .cse37 (<= ULTIMATE.start_main_~x~0 62) .cse3) (and .cse34 (<= ULTIMATE.start_main_~x~0 60) .cse3) (and .cse37 (<= ULTIMATE.start_main_~x~0 40) (<= 40 ULTIMATE.start_main_~x~0)) (and .cse21 (<= ULTIMATE.start_main_~x~0 56) .cse3) (and .cse5 (<= ULTIMATE.start_main_~x~0 83) .cse3 .cse38) (and .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 68)) (and (<= ULTIMATE.start_main_~x~0 64) .cse39 .cse3) (and (<= 18 ULTIMATE.start_main_~x~0) .cse40 .cse1) (and .cse41 .cse1 (<= 14 ULTIMATE.start_main_~x~0)) (and .cse5 .cse12 .cse3 (<= ULTIMATE.start_main_~x~0 95)) (and .cse31 (<= ULTIMATE.start_main_~x~0 59) .cse3) (and (<= ULTIMATE.start_main_~x~0 82) .cse5 .cse27 .cse3) (and .cse5 .cse10 (<= ULTIMATE.start_main_~x~0 71) .cse3) (and (<= ULTIMATE.start_main_~x~0 66) .cse35 .cse3) (and .cse42 (<= 44 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 44)) (and (<= ULTIMATE.start_main_~x~0 99) .cse5 .cse43 .cse3) (and (<= 28 ULTIMATE.start_main_~x~0) .cse1 .cse18) (and .cse5 .cse44 .cse3 (<= ULTIMATE.start_main_~x~0 79)) (and .cse5 .cse40 .cse3 (<= ULTIMATE.start_main_~x~0 84)) (and .cse8 (<= 45 ULTIMATE.start_main_~x~0) .cse1) (and (<= 10 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 10) .cse17) (and .cse30 (<= 22 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 22)) (and .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 76) .cse45) (and .cse3 (<= ULTIMATE.start_main_~x~0 54) .cse46) (and (<= ULTIMATE.start_main_~x~0 3) .cse43 (<= 3 ULTIMATE.start_main_~x~0)) (and (<= 23 ULTIMATE.start_main_~x~0) .cse44 .cse1) (and (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start_main_~x~0) .cse47) (and .cse48 .cse1 (<= 12 ULTIMATE.start_main_~x~0)) (and .cse6 (<= 27 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 27)) (and (<= ULTIMATE.start_main_~x~0 0) .cse19 (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0)) (and (<= 26 ULTIMATE.start_main_~x~0) .cse1 .cse45) (and .cse1 .cse3 (<= ULTIMATE.start_main_~y~0 51)) (and .cse5 (<= ULTIMATE.start_main_~x~0 93) .cse0 .cse3) (and .cse15 (<= 24 ULTIMATE.start_main_~x~0) .cse1) (and .cse16 (<= 17 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 17)) (and .cse5 .cse9 (<= ULTIMATE.start_main_~x~0 72) .cse3) (and .cse20 (<= 13 ULTIMATE.start_main_~x~0) .cse1) (and .cse14 (<= ULTIMATE.start_main_~x~0 65) .cse3) (and .cse29 (<= 33 ULTIMATE.start_main_~x~0) .cse1) (and (<= 38 ULTIMATE.start_main_~x~0) .cse1 .cse39) (and .cse42 .cse3 (<= ULTIMATE.start_main_~x~0 58)) (and .cse5 .cse41 (<= ULTIMATE.start_main_~x~0 88) .cse3) (and .cse5 .cse33 (<= ULTIMATE.start_main_~x~0 98) .cse3) (and (<= 11 ULTIMATE.start_main_~x~0) .cse1 .cse11) (and (<= 48 ULTIMATE.start_main_~x~0) .cse1 .cse46) (and (<= 39 ULTIMATE.start_main_~x~0) .cse32 .cse1) (and .cse5 .cse49 (<= ULTIMATE.start_main_~x~0 97) .cse3) (and (<= 19 ULTIMATE.start_main_~x~0) .cse1 .cse38) (and .cse13 (<= 6 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 6)) (and (<= 2 ULTIMATE.start_main_~x~0) .cse26 (<= ULTIMATE.start_main_~x~0 2)) (and .cse5 (<= ULTIMATE.start_main_~x~0 101) .cse3 .cse47) (and .cse5 .cse22 .cse3 (<= ULTIMATE.start_main_~x~0 77)) (and .cse5 .cse48 (<= ULTIMATE.start_main_~x~0 90) .cse3) (and .cse23 (<= ULTIMATE.start_main_~x~0 61) .cse3) (and (<= ULTIMATE.start_main_~x~0 52) .cse50 .cse3) (and .cse1 .cse50 (<= 50 ULTIMATE.start_main_~x~0)) (and .cse51 (<= 29 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 29)) (and .cse5 (<= ULTIMATE.start_main_~x~0 73) .cse51 .cse3) (and (<= 5 ULTIMATE.start_main_~x~0) .cse49 .cse1) (and .cse2 (<= 49 ULTIMATE.start_main_~x~0) .cse1) (and .cse5 .cse52 .cse3 (<= ULTIMATE.start_main_~x~0 86)) (and .cse25 .cse3 (<= ULTIMATE.start_main_~x~0 67)) (and .cse52 (<= 16 ULTIMATE.start_main_~x~0) .cse1) (and (<= 47 ULTIMATE.start_main_~x~0) .cse24 .cse1))) [2021-10-21 19:21:49,861 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 25) no Hoare annotation was computed. [2021-10-21 19:21:49,865 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:21:49,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:21:49 BoogieIcfgContainer [2021-10-21 19:21:49,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:21:49,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:21:49,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:21:49,913 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:21:49,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:15:45" (3/4) ... [2021-10-21 19:21:49,917 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:21:49,928 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-21 19:21:49,929 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-21 19:21:49,966 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:21:49,966 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:21:49,968 INFO L168 Benchmark]: Toolchain (without parser) took 364602.20 ms. Allocated memory was 88.1 MB in the beginning and 3.0 GB in the end (delta: 3.0 GB). Free memory was 65.7 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.4 GB. Max. memory is 16.1 GB. [2021-10-21 19:21:49,968 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 62.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:21:49,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.99 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 65.4 MB in the end (delta: 39.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:49,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.14 ms. Allocated memory is still 88.1 MB. Free memory was 65.4 MB in the beginning and 64.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:21:49,969 INFO L168 Benchmark]: Boogie Preprocessor took 17.08 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 63.3 MB in the end (delta: 815.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:49,970 INFO L168 Benchmark]: RCFGBuilder took 235.79 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 55.4 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:49,970 INFO L168 Benchmark]: TraceAbstraction took 364021.67 ms. Allocated memory was 88.1 MB in the beginning and 3.0 GB in the end (delta: 3.0 GB). Free memory was 54.9 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.4 GB. Max. memory is 16.1 GB. [2021-10-21 19:21:49,970 INFO L168 Benchmark]: Witness Printer took 53.60 ms. Allocated memory is still 3.0 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:21:49,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 62.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.99 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 65.4 MB in the end (delta: 39.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.14 ms. Allocated memory is still 88.1 MB. Free memory was 65.4 MB in the beginning and 64.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.08 ms. Allocated memory is still 88.1 MB. Free memory was 64.2 MB in the beginning and 63.3 MB in the end (delta: 815.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 235.79 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 55.4 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 364021.67 ms. Allocated memory was 88.1 MB in the beginning and 3.0 GB in the end (delta: 3.0 GB). Free memory was 54.9 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.4 GB. Max. memory is 16.1 GB. * Witness Printer took 53.60 ms. Allocated memory is still 3.0 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 363916.6ms, OverallIterations: 100, TraceHistogramMax: 122, EmptinessCheckTime: 191.0ms, AutomataDifference: 33463.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 4082.3ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2623 SDtfs, 18154 SDslu, 15422 SDs, 0 SdLazy, 22487 SolverSat, 3085 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11231.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22995 GetRequests, 19491 SyntacticMatches, 0 SemanticMatches, 3504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38491 ImplicationChecksByTransitivity, 70705.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5250occurred in iteration=84, InterpolantAutomatonStates: 3454, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3946.1ms AutomataMinimizationTime, 100 MinimizatonAttempts, 86750 StatesRemovedByMinimization, 91 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 108 NumberOfFragments, 1152 HoareAnnotationTreeSize, 2 FomulaSimplifications, 3200 FormulaSimplificationTreeSizeReduction, 917.9ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 16785 FormulaSimplificationTreeSizeReductionInter, 3145.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 710.0ms SsaConstructionTime, 5214.0ms SatisfiabilityAnalysisTime, 116283.7ms InterpolantComputationTime, 39784 NumberOfCodeBlocks, 38866 NumberOfCodeBlocksAsserted, 1451 NumberOfCheckSat, 39589 ConstructedInterpolants, 0 QuantifiedInterpolants, 106837 SizeOfPredicates, 0 NumberOfNonLiveVariables, 31843 ConjunctsInSsa, 2818 ConjunctsInUnsatCore, 195 InterpolantComputations, 6 PerfectInterpolantSequences, 213114/851854 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 9 && x <= 51) && 9 <= x) || ((y <= 49 && x <= 53) && 51 <= x)) || ((32 <= x && x <= 51) && y <= 32)) || (((y <= 34 && y <= 27) && 51 <= x) && x <= 75)) || (((y <= 34 && y <= 21) && x <= 81) && 51 <= x)) || ((y <= 45 && x <= 57) && 51 <= x)) || ((30 <= x && y <= 30) && x <= 51)) || ((21 <= x && y <= 21) && x <= 51)) || ((31 <= x && y <= 31) && x <= 51)) || (((x <= 91 && y <= 34) && 51 <= x) && y <= 11)) || ((y <= 7 && x <= 51) && 7 <= x)) || (((y <= 6 && y <= 34) && x <= 96) && 51 <= x)) || ((y <= 37 && 37 <= x) && x <= 51)) || (((y <= 24 && y <= 34) && x <= 78) && 51 <= x)) || (((y <= 34 && x <= 70) && 51 <= x) && y <= 32)) || (((y <= 17 && x <= 85) && y <= 34) && 51 <= x)) || (((y <= 34 && x <= 92) && 51 <= x) && y <= 10)) || (((y <= 34 && x <= 74) && 51 <= x) && y <= 28)) || (((y <= 34 && y + 1 <= 0) && x <= 103) && 51 <= x)) || (((y <= 34 && y <= 0) && 51 <= x) && x <= 102)) || (((y <= 13 && y <= 34) && 51 <= x) && x <= 89)) || ((y <= 46 && 46 <= x) && x <= 51)) || ((25 <= x && y <= 25) && x <= 25)) || ((41 <= x && y <= 41) && x <= 51)) || ((x <= 55 && y <= 47) && 51 <= x)) || ((y <= 35 && 35 <= x) && x <= 35)) || (((y <= 34 && y <= 2) && 51 <= x) && x <= 100)) || ((20 <= x && y <= 20) && x <= 51)) || (((y <= 15 && y <= 34) && x <= 87) && 51 <= x)) || ((y <= 34 && 34 <= x) && x <= 34)) || (((y <= 34 && y <= 33) && x <= 69) && 51 <= x)) || (((x <= 80 && y <= 34) && y <= 22) && 51 <= x)) || ((y <= 43 && x <= 51) && 43 <= x)) || ((y <= 15 && 15 <= x) && x <= 51)) || ((x <= 63 && y <= 39) && 51 <= x)) || ((4 <= x && y <= 4) && x <= 51)) || ((y <= 42 && x <= 51) && 42 <= x)) || ((y <= 36 && x <= 51) && 36 <= x)) || (((y <= 34 && x <= 94) && 51 <= x) && y <= 8)) || ((8 <= x && x <= 51) && y <= 8)) || ((y <= 40 && x <= 62) && 51 <= x)) || ((y <= 42 && x <= 60) && 51 <= x)) || ((y <= 40 && x <= 40) && 40 <= x)) || ((y <= 46 && x <= 56) && 51 <= x)) || (((y <= 34 && x <= 83) && 51 <= x) && y <= 19)) || ((y <= 34 && 51 <= x) && x <= 68)) || ((x <= 64 && y <= 38) && 51 <= x)) || ((18 <= x && y <= 18) && x <= 51)) || ((y <= 14 && x <= 51) && 14 <= x)) || (((y <= 34 && y <= 7) && 51 <= x) && x <= 95)) || ((y <= 43 && x <= 59) && 51 <= x)) || (((x <= 82 && y <= 34) && y <= 20) && 51 <= x)) || (((y <= 34 && y <= 31) && x <= 71) && 51 <= x)) || ((x <= 66 && y <= 36) && 51 <= x)) || ((y <= 44 && 44 <= x) && x <= 44)) || (((x <= 99 && y <= 34) && y <= 3) && 51 <= x)) || ((28 <= x && x <= 51) && y <= 28)) || (((y <= 34 && y <= 23) && 51 <= x) && x <= 79)) || (((y <= 34 && y <= 18) && 51 <= x) && x <= 84)) || ((y <= 45 && 45 <= x) && x <= 51)) || ((10 <= x && x <= 10) && y <= 10)) || ((y <= 22 && 22 <= x) && x <= 22)) || (((y <= 34 && 51 <= x) && x <= 76) && y <= 26)) || ((51 <= x && x <= 54) && y <= 48)) || ((x <= 3 && y <= 3) && 3 <= x)) || ((23 <= x && y <= 23) && x <= 51)) || ((x <= 1 && 1 <= x) && y <= 1)) || ((y <= 12 && x <= 51) && 12 <= x)) || ((y <= 27 && 27 <= x) && x <= 27)) || (((x <= 0 && y <= 0) && 0 <= y) && 0 <= x)) || ((26 <= x && x <= 51) && y <= 26)) || ((x <= 51 && 51 <= x) && y <= 51)) || (((y <= 34 && x <= 93) && y <= 9) && 51 <= x)) || ((y <= 24 && 24 <= x) && x <= 51)) || ((y <= 17 && 17 <= x) && x <= 17)) || (((y <= 34 && y <= 30) && x <= 72) && 51 <= x)) || ((y <= 13 && 13 <= x) && x <= 51)) || ((y <= 37 && x <= 65) && 51 <= x)) || ((y <= 33 && 33 <= x) && x <= 51)) || ((38 <= x && x <= 51) && y <= 38)) || ((y <= 44 && 51 <= x) && x <= 58)) || (((y <= 34 && y <= 14) && x <= 88) && 51 <= x)) || (((y <= 34 && y <= 4) && x <= 98) && 51 <= x)) || ((11 <= x && x <= 51) && y <= 11)) || ((48 <= x && x <= 51) && y <= 48)) || ((39 <= x && y <= 39) && x <= 51)) || (((y <= 34 && y <= 5) && x <= 97) && 51 <= x)) || ((19 <= x && x <= 51) && y <= 19)) || ((y <= 6 && 6 <= x) && x <= 6)) || ((2 <= x && y <= 2) && x <= 2)) || (((y <= 34 && x <= 101) && 51 <= x) && y <= 1)) || (((y <= 34 && y <= 25) && 51 <= x) && x <= 77)) || (((y <= 34 && y <= 12) && x <= 90) && 51 <= x)) || ((y <= 41 && x <= 61) && 51 <= x)) || ((x <= 52 && y <= 50) && 51 <= x)) || ((x <= 51 && y <= 50) && 50 <= x)) || ((y <= 29 && 29 <= x) && x <= 29)) || (((y <= 34 && x <= 73) && y <= 29) && 51 <= x)) || ((5 <= x && y <= 5) && x <= 51)) || ((y <= 49 && 49 <= x) && x <= 51)) || (((y <= 34 && y <= 16) && 51 <= x) && x <= 86)) || ((y <= 35 && 51 <= x) && x <= 67)) || ((y <= 16 && 16 <= x) && x <= 51)) || ((47 <= x && y <= 47) && x <= 51) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:21:50,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_678db3be-1823-417e-8773-ae8a83aba387/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...