./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU --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 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:22:41,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:22:41,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:22:41,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:22:41,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:22:41,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:22:41,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:22:41,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:22:41,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:22:41,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:22:41,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:22:41,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:22:41,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:22:41,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:22:41,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:22:41,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:22:41,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:22:41,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:22:41,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:22:41,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:22:41,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:22:41,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:22:41,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:22:41,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:22:41,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:22:41,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:22:41,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:22:41,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:22:41,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:22:41,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:22:41,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:22:41,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:22:41,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:22:41,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:22:41,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:22:41,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:22:41,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:22:41,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:22:41,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:22:41,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:22:41,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:22:41,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-02 22:22:41,956 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:22:41,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:22:41,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:22:41,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:22:41,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:22:41,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:22:41,959 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:22:41,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:22:41,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:22:41,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:22:41,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:22:41,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:22:41,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:22:41,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:22:41,961 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-02 22:22:41,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:22:41,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:22:41,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:22:41,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:22:41,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:22:41,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:22:41,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:22:41,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:22:41,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:22:41,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:22:41,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:22:41,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:22:41,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:22:41,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:22:41,965 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_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 [2021-11-02 22:22:42,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:22:42,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:22:42,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:22:42,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:22:42,304 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:22:42,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-02 22:22:42,368 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/data/a0b99b851/96ef6932b63f4fa2af37512da5a52b66/FLAG6093563f5 [2021-11-02 22:22:42,976 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:22:42,977 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-02 22:22:42,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/data/a0b99b851/96ef6932b63f4fa2af37512da5a52b66/FLAG6093563f5 [2021-11-02 22:22:43,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/data/a0b99b851/96ef6932b63f4fa2af37512da5a52b66 [2021-11-02 22:22:43,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:22:43,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:22:43,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:22:43,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:22:43,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:22:43,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:22:43" (1/1) ... [2021-11-02 22:22:43,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222699fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:43, skipping insertion in model container [2021-11-02 22:22:43,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:22:43" (1/1) ... [2021-11-02 22:22:43,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:22:43,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:22:44,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:22:44,022 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:22:44,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:22:44,200 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:22:44,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44 WrapperNode [2021-11-02 22:22:44,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:22:44,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:22:44,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:22:44,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:22:44,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44" (1/1) ... [2021-11-02 22:22:44,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44" (1/1) ... [2021-11-02 22:22:44,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:22:44,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:22:44,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:22:44,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:22:44,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44" (1/1) ... [2021-11-02 22:22:44,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44" (1/1) ... [2021-11-02 22:22:44,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44" (1/1) ... [2021-11-02 22:22:44,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44" (1/1) ... [2021-11-02 22:22:44,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44" (1/1) ... [2021-11-02 22:22:44,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44" (1/1) ... [2021-11-02 22:22:44,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44" (1/1) ... [2021-11-02 22:22:44,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:22:44,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:22:44,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:22:44,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:22:44,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44" (1/1) ... [2021-11-02 22:22:44,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:22:44,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:44,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:22:44,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:22:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:22:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:22:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:22:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:22:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:22:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-02 22:22:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:22:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-11-02 22:22:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:22:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:22:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:22:44,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:22:45,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:22:45,258 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-11-02 22:22:45,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:22:45 BoogieIcfgContainer [2021-11-02 22:22:45,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:22:45,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:22:45,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:22:45,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:22:45,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:22:43" (1/3) ... [2021-11-02 22:22:45,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c503c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:22:45, skipping insertion in model container [2021-11-02 22:22:45,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:22:44" (2/3) ... [2021-11-02 22:22:45,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c503c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:22:45, skipping insertion in model container [2021-11-02 22:22:45,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:22:45" (3/3) ... [2021-11-02 22:22:45,305 INFO L111 eAbstractionObserver]: Analyzing ICFG dirname-1.i [2021-11-02 22:22:45,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:22:45,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-11-02 22:22:45,425 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:22:45,434 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 [2021-11-02 22:22:45,434 INFO L340 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2021-11-02 22:22:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 67 states have (on average 1.8059701492537314) internal successors, (121), 95 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:45,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-02 22:22:45,462 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:45,463 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-02 22:22:45,464 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:45,471 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-11-02 22:22:45,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:45,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283003602] [2021-11-02 22:22:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:45,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:45,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:45,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283003602] [2021-11-02 22:22:45,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283003602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:45,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:22:45,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:22:45,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21908325] [2021-11-02 22:22:45,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:22:45,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:45,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:22:45,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:22:45,900 INFO L87 Difference]: Start difference. First operand has 96 states, 67 states have (on average 1.8059701492537314) internal successors, (121), 95 states have internal predecessors, (121), 0 states have call successors, (0), 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, 2 states have (on average 2.0) internal successors, (4), 3 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) [2021-11-02 22:22:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:45,997 INFO L93 Difference]: Finished difference Result 190 states and 240 transitions. [2021-11-02 22:22:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:22:45,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 [2021-11-02 22:22:46,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:46,015 INFO L225 Difference]: With dead ends: 190 [2021-11-02 22:22:46,015 INFO L226 Difference]: Without dead ends: 95 [2021-11-02 22:22:46,021 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:22:46,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-02 22:22:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-02 22:22:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 67 states have (on average 1.6865671641791045) internal successors, (113), 94 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2021-11-02 22:22:46,087 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 4 [2021-11-02 22:22:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:46,089 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2021-11-02 22:22:46,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2021-11-02 22:22:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2021-11-02 22:22:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:22:46,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:46,090 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-02 22:22:46,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:22:46,091 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:46,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1809705867, now seen corresponding path program 1 times [2021-11-02 22:22:46,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:46,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569707493] [2021-11-02 22:22:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:46,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:22:46,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:46,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569707493] [2021-11-02 22:22:46,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569707493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:46,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:22:46,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:22:46,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229660920] [2021-11-02 22:22:46,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:22:46,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:46,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:22:46,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:22:46,188 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2021-11-02 22:22:46,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:46,221 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2021-11-02 22:22:46,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:22:46,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2021-11-02 22:22:46,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:46,223 INFO L225 Difference]: With dead ends: 95 [2021-11-02 22:22:46,223 INFO L226 Difference]: Without dead ends: 94 [2021-11-02 22:22:46,224 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:22:46,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-02 22:22:46,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-11-02 22:22:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 67 states have (on average 1.671641791044776) internal successors, (112), 93 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) [2021-11-02 22:22:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2021-11-02 22:22:46,235 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 7 [2021-11-02 22:22:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:46,235 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2021-11-02 22:22:46,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2021-11-02 22:22:46,236 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2021-11-02 22:22:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 22:22:46,236 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:46,237 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2021-11-02 22:22:46,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:22:46,237 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:46,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash 266307074, now seen corresponding path program 1 times [2021-11-02 22:22:46,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:46,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401810732] [2021-11-02 22:22:46,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:46,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:46,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:46,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401810732] [2021-11-02 22:22:46,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401810732] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:46,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208711057] [2021-11-02 22:22:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:46,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:46,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:46,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:46,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:22:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:46,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:22:46,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:46,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:46,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208711057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:46,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:22:46,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-11-02 22:22:46,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11608860] [2021-11-02 22:22:46,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:22:46,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:46,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:22:46,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:22:46,671 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:46,711 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2021-11-02 22:22:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:22:46,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-02 22:22:46,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:46,717 INFO L225 Difference]: With dead ends: 94 [2021-11-02 22:22:46,718 INFO L226 Difference]: Without dead ends: 93 [2021-11-02 22:22:46,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:22:46,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-02 22:22:46,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2021-11-02 22:22:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.676923076923077) internal successors, (109), 90 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) [2021-11-02 22:22:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2021-11-02 22:22:46,726 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 8 [2021-11-02 22:22:46,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:46,727 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2021-11-02 22:22:46,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2021-11-02 22:22:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:22:46,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:46,731 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:46,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:46,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:46,948 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:46,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:46,949 INFO L85 PathProgramCache]: Analyzing trace with hash -334468778, now seen corresponding path program 1 times [2021-11-02 22:22:46,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:46,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711124780] [2021-11-02 22:22:46,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:46,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:47,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:47,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711124780] [2021-11-02 22:22:47,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711124780] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:47,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513515888] [2021-11-02 22:22:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:47,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:47,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:47,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:47,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:22:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:47,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:22:47,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:47,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513515888] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:47,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:22:47,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-02 22:22:47,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268973018] [2021-11-02 22:22:47,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:22:47,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:47,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:22:47,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:22:47,198 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:47,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:47,224 INFO L93 Difference]: Finished difference Result 181 states and 217 transitions. [2021-11-02 22:22:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:22:47,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 9 [2021-11-02 22:22:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:47,226 INFO L225 Difference]: With dead ends: 181 [2021-11-02 22:22:47,227 INFO L226 Difference]: Without dead ends: 96 [2021-11-02 22:22:47,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:22:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-02 22:22:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2021-11-02 22:22:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 68 states have (on average 1.6470588235294117) internal successors, (112), 93 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) [2021-11-02 22:22:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2021-11-02 22:22:47,237 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 9 [2021-11-02 22:22:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:47,237 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2021-11-02 22:22:47,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2021-11-02 22:22:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:22:47,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:47,239 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:47,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:47,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:47,452 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:47,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1759164880, now seen corresponding path program 2 times [2021-11-02 22:22:47,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:47,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225561348] [2021-11-02 22:22:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:47,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:47,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:47,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225561348] [2021-11-02 22:22:47,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225561348] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:47,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412011401] [2021-11-02 22:22:47,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:22:47,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:47,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:47,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:47,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:22:47,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:22:47,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:22:47,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:22:47,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:22:47,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412011401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:47,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:22:47,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-02 22:22:47,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601300390] [2021-11-02 22:22:47,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:22:47,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:47,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:22:47,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:22:47,853 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:47,941 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2021-11-02 22:22:47,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:22:47,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 12 [2021-11-02 22:22:47,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:47,945 INFO L225 Difference]: With dead ends: 94 [2021-11-02 22:22:47,946 INFO L226 Difference]: Without dead ends: 86 [2021-11-02 22:22:47,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:22:47,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-02 22:22:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-02 22:22:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.5294117647058822) internal successors, (104), 85 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2021-11-02 22:22:47,972 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 12 [2021-11-02 22:22:47,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:47,972 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2021-11-02 22:22:47,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2021-11-02 22:22:47,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:22:47,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:47,977 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:48,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:48,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:48,200 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:48,200 INFO L85 PathProgramCache]: Analyzing trace with hash -172633462, now seen corresponding path program 1 times [2021-11-02 22:22:48,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:48,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635182321] [2021-11-02 22:22:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:48,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:22:48,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:48,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635182321] [2021-11-02 22:22:48,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635182321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:48,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:22:48,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:22:48,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454727658] [2021-11-02 22:22:48,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:22:48,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:22:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:22:48,273 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-11-02 22:22:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:48,306 INFO L93 Difference]: Finished difference Result 156 states and 194 transitions. [2021-11-02 22:22:48,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:22:48,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) Word has length 22 [2021-11-02 22:22:48,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:48,310 INFO L225 Difference]: With dead ends: 156 [2021-11-02 22:22:48,310 INFO L226 Difference]: Without dead ends: 89 [2021-11-02 22:22:48,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:22:48,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-02 22:22:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-11-02 22:22:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 88 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2021-11-02 22:22:48,340 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 22 [2021-11-02 22:22:48,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:48,341 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2021-11-02 22:22:48,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2021-11-02 22:22:48,342 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2021-11-02 22:22:48,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 22:22:48,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:48,343 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:48,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:22:48,344 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:48,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:48,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1845883481, now seen corresponding path program 1 times [2021-11-02 22:22:48,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:48,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018482835] [2021-11-02 22:22:48,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:48,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:22:48,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:48,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018482835] [2021-11-02 22:22:48,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018482835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:48,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:22:48,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:22:48,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154552471] [2021-11-02 22:22:48,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:22:48,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:48,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:22:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:22:48,429 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 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) [2021-11-02 22:22:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:48,483 INFO L93 Difference]: Finished difference Result 159 states and 194 transitions. [2021-11-02 22:22:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:22:48,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 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 25 [2021-11-02 22:22:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:48,487 INFO L225 Difference]: With dead ends: 159 [2021-11-02 22:22:48,487 INFO L226 Difference]: Without dead ends: 157 [2021-11-02 22:22:48,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:22:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-02 22:22:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 98. [2021-11-02 22:22:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.5) internal successors, (120), 97 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2021-11-02 22:22:48,513 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 25 [2021-11-02 22:22:48,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:48,514 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2021-11-02 22:22:48,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 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) [2021-11-02 22:22:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2021-11-02 22:22:48,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 22:22:48,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:48,515 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:48,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:22:48,516 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:48,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1845883426, now seen corresponding path program 1 times [2021-11-02 22:22:48,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:48,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174997819] [2021-11-02 22:22:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:48,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:22:48,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:48,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174997819] [2021-11-02 22:22:48,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174997819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:48,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:22:48,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:22:48,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943819556] [2021-11-02 22:22:48,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:22:48,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:22:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:22:48,645 INFO L87 Difference]: Start difference. First operand 98 states and 120 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 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) [2021-11-02 22:22:48,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:48,659 INFO L93 Difference]: Finished difference Result 98 states and 120 transitions. [2021-11-02 22:22:48,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:22:48,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 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 25 [2021-11-02 22:22:48,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:48,664 INFO L225 Difference]: With dead ends: 98 [2021-11-02 22:22:48,665 INFO L226 Difference]: Without dead ends: 97 [2021-11-02 22:22:48,665 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:22:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-02 22:22:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-11-02 22:22:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 80 states have (on average 1.475) internal successors, (118), 96 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) [2021-11-02 22:22:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 118 transitions. [2021-11-02 22:22:48,670 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 118 transitions. Word has length 25 [2021-11-02 22:22:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:48,671 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 118 transitions. [2021-11-02 22:22:48,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 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) [2021-11-02 22:22:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 118 transitions. [2021-11-02 22:22:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-02 22:22:48,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:48,672 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:48,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:22:48,673 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:48,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:48,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1387811266, now seen corresponding path program 1 times [2021-11-02 22:22:48,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:48,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269631186] [2021-11-02 22:22:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:48,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:48,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:22:48,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:48,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269631186] [2021-11-02 22:22:48,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269631186] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:48,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522054554] [2021-11-02 22:22:48,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:48,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:48,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:48,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:48,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:22:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:48,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:22:48,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:22:49,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522054554] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:49,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:22:49,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 7 [2021-11-02 22:22:49,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041486885] [2021-11-02 22:22:49,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:22:49,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:49,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:22:49,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:22:49,014 INFO L87 Difference]: Start difference. First operand 97 states and 118 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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) [2021-11-02 22:22:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:49,091 INFO L93 Difference]: Finished difference Result 246 states and 304 transitions. [2021-11-02 22:22:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:22:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 26 [2021-11-02 22:22:49,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:49,094 INFO L225 Difference]: With dead ends: 246 [2021-11-02 22:22:49,094 INFO L226 Difference]: Without dead ends: 158 [2021-11-02 22:22:49,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:22:49,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-02 22:22:49,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 95. [2021-11-02 22:22:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 94 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 115 transitions. [2021-11-02 22:22:49,101 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 115 transitions. Word has length 26 [2021-11-02 22:22:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:49,101 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 115 transitions. [2021-11-02 22:22:49,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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) [2021-11-02 22:22:49,102 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 115 transitions. [2021-11-02 22:22:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 22:22:49,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:49,105 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:49,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:49,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:49,328 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:49,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:49,328 INFO L85 PathProgramCache]: Analyzing trace with hash 341368628, now seen corresponding path program 1 times [2021-11-02 22:22:49,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:49,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674113335] [2021-11-02 22:22:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:49,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:49,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:49,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674113335] [2021-11-02 22:22:49,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674113335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:49,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946666438] [2021-11-02 22:22:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:49,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:49,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:49,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:49,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:22:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:49,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:22:49,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:49,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946666438] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:49,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:22:49,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-02 22:22:49,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599214702] [2021-11-02 22:22:49,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:22:49,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:49,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:22:49,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:22:49,640 INFO L87 Difference]: Start difference. First operand 95 states and 115 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:49,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:49,673 INFO L93 Difference]: Finished difference Result 183 states and 223 transitions. [2021-11-02 22:22:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:22:49,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 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 29 [2021-11-02 22:22:49,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:49,674 INFO L225 Difference]: With dead ends: 183 [2021-11-02 22:22:49,674 INFO L226 Difference]: Without dead ends: 100 [2021-11-02 22:22:49,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:22:49,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-02 22:22:49,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2021-11-02 22:22:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 97 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) [2021-11-02 22:22:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2021-11-02 22:22:49,681 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 29 [2021-11-02 22:22:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:49,681 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2021-11-02 22:22:49,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:49,681 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2021-11-02 22:22:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 22:22:49,683 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:49,683 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:49,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:49,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:22:49,908 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:49,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:49,909 INFO L85 PathProgramCache]: Analyzing trace with hash 364916398, now seen corresponding path program 2 times [2021-11-02 22:22:49,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:49,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644685701] [2021-11-02 22:22:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:49,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:50,008 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:22:50,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:50,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644685701] [2021-11-02 22:22:50,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644685701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:50,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646774507] [2021-11-02 22:22:50,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:22:50,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:50,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:50,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:50,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:22:50,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:22:50,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:22:50,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:22:50,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-02 22:22:50,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646774507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:50,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:22:50,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-11-02 22:22:50,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653138252] [2021-11-02 22:22:50,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:22:50,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:50,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:22:50,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:22:50,378 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-02 22:22:50,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:50,498 INFO L93 Difference]: Finished difference Result 155 states and 190 transitions. [2021-11-02 22:22:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:22:50,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) Word has length 32 [2021-11-02 22:22:50,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:50,500 INFO L225 Difference]: With dead ends: 155 [2021-11-02 22:22:50,500 INFO L226 Difference]: Without dead ends: 98 [2021-11-02 22:22:50,501 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:22:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-02 22:22:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-11-02 22:22:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 97 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2021-11-02 22:22:50,507 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 32 [2021-11-02 22:22:50,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:50,507 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2021-11-02 22:22:50,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2021-11-02 22:22:50,508 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2021-11-02 22:22:50,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:22:50,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:50,509 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:50,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:50,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:50,728 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:50,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash 71284786, now seen corresponding path program 1 times [2021-11-02 22:22:50,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:50,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417504559] [2021-11-02 22:22:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:50,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 22:22:50,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:50,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417504559] [2021-11-02 22:22:50,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417504559] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:50,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864288509] [2021-11-02 22:22:50,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:50,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:50,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:50,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:50,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:22:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:50,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:22:50,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:22:51,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864288509] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:51,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:22:51,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 9 [2021-11-02 22:22:51,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865807536] [2021-11-02 22:22:51,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:22:51,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:51,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:22:51,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:22:51,086 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:51,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:51,146 INFO L93 Difference]: Finished difference Result 196 states and 236 transitions. [2021-11-02 22:22:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:22:51,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 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 38 [2021-11-02 22:22:51,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:51,147 INFO L225 Difference]: With dead ends: 196 [2021-11-02 22:22:51,147 INFO L226 Difference]: Without dead ends: 113 [2021-11-02 22:22:51,147 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:22:51,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-02 22:22:51,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2021-11-02 22:22:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 91 states have (on average 1.3846153846153846) internal successors, (126), 106 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2021-11-02 22:22:51,153 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 38 [2021-11-02 22:22:51,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:51,154 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2021-11-02 22:22:51,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:51,154 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2021-11-02 22:22:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 22:22:51,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:51,155 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:51,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:51,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:51,384 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:51,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1989306548, now seen corresponding path program 1 times [2021-11-02 22:22:51,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:51,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238619525] [2021-11-02 22:22:51,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:51,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:22:51,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:51,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238619525] [2021-11-02 22:22:51,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238619525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:51,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382602950] [2021-11-02 22:22:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:51,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:51,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:51,502 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:51,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:22:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:51,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:22:51,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:22:51,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382602950] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:51,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:22:51,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-11-02 22:22:51,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100516041] [2021-11-02 22:22:51,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:22:51,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:51,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:22:51,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:22:51,848 INFO L87 Difference]: Start difference. First operand 107 states and 126 transitions. Second operand has 9 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) [2021-11-02 22:22:51,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:51,890 INFO L93 Difference]: Finished difference Result 201 states and 239 transitions. [2021-11-02 22:22:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:22:51,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 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 45 [2021-11-02 22:22:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:51,892 INFO L225 Difference]: With dead ends: 201 [2021-11-02 22:22:51,892 INFO L226 Difference]: Without dead ends: 112 [2021-11-02 22:22:51,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:22:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-02 22:22:51,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2021-11-02 22:22:51,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 94 states have (on average 1.372340425531915) internal successors, (129), 109 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) [2021-11-02 22:22:51,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2021-11-02 22:22:51,899 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 45 [2021-11-02 22:22:51,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:51,901 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2021-11-02 22:22:51,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 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) [2021-11-02 22:22:51,911 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2021-11-02 22:22:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-02 22:22:51,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:51,912 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:51,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:52,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 22:22:52,128 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:52,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:52,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1186286906, now seen corresponding path program 2 times [2021-11-02 22:22:52,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:52,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793325415] [2021-11-02 22:22:52,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:52,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:22:52,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:52,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793325415] [2021-11-02 22:22:52,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793325415] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:52,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040845837] [2021-11-02 22:22:52,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:22:52,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:52,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:52,257 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:52,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:22:52,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:22:52,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:22:52,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:22:52,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 22:22:52,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040845837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:52,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:22:52,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-02 22:22:52,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234538709] [2021-11-02 22:22:52,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:22:52,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:22:52,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:22:52,682 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2021-11-02 22:22:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:52,698 INFO L93 Difference]: Finished difference Result 184 states and 220 transitions. [2021-11-02 22:22:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:22:52,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) Word has length 48 [2021-11-02 22:22:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:52,700 INFO L225 Difference]: With dead ends: 184 [2021-11-02 22:22:52,700 INFO L226 Difference]: Without dead ends: 134 [2021-11-02 22:22:52,701 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:22:52,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-02 22:22:52,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 111. [2021-11-02 22:22:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 95 states have (on average 1.368421052631579) internal successors, (130), 110 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) [2021-11-02 22:22:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2021-11-02 22:22:52,708 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 48 [2021-11-02 22:22:52,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:52,708 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2021-11-02 22:22:52,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2021-11-02 22:22:52,709 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2021-11-02 22:22:52,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 22:22:52,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:52,710 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:52,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:52,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 22:22:52,936 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1881412672, now seen corresponding path program 1 times [2021-11-02 22:22:52,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:52,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897840144] [2021-11-02 22:22:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:52,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:22:53,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:53,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897840144] [2021-11-02 22:22:53,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897840144] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:53,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785276427] [2021-11-02 22:22:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:53,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:53,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:53,040 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:53,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:22:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:53,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:22:53,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:22:53,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785276427] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:53,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:22:53,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-11-02 22:22:53,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514102863] [2021-11-02 22:22:53,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:22:53,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:53,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:22:53,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:22:53,454 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:53,504 INFO L93 Difference]: Finished difference Result 206 states and 244 transitions. [2021-11-02 22:22:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:22:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 49 [2021-11-02 22:22:53,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:53,507 INFO L225 Difference]: With dead ends: 206 [2021-11-02 22:22:53,507 INFO L226 Difference]: Without dead ends: 116 [2021-11-02 22:22:53,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:22:53,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-02 22:22:53,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2021-11-02 22:22:53,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 98 states have (on average 1.3571428571428572) internal successors, (133), 113 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) [2021-11-02 22:22:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2021-11-02 22:22:53,517 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 49 [2021-11-02 22:22:53,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:53,518 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2021-11-02 22:22:53,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2021-11-02 22:22:53,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 22:22:53,521 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:53,521 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:53,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:53,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-02 22:22:53,746 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:53,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:53,746 INFO L85 PathProgramCache]: Analyzing trace with hash -323820870, now seen corresponding path program 2 times [2021-11-02 22:22:53,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:53,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937470232] [2021-11-02 22:22:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:53,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:22:53,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:53,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937470232] [2021-11-02 22:22:53,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937470232] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:53,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59543700] [2021-11-02 22:22:53,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:22:53,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:53,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:53,875 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:53,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 22:22:54,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:22:54,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:22:54,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:22:54,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:22:54,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59543700] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:54,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:22:54,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-11-02 22:22:54,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186824663] [2021-11-02 22:22:54,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:22:54,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:54,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:22:54,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:22:54,446 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:54,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:54,509 INFO L93 Difference]: Finished difference Result 209 states and 247 transitions. [2021-11-02 22:22:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:22:54,510 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 [2021-11-02 22:22:54,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:54,512 INFO L225 Difference]: With dead ends: 209 [2021-11-02 22:22:54,512 INFO L226 Difference]: Without dead ends: 119 [2021-11-02 22:22:54,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:22:54,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-02 22:22:54,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2021-11-02 22:22:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 101 states have (on average 1.3465346534653466) internal successors, (136), 116 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) [2021-11-02 22:22:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2021-11-02 22:22:54,522 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 52 [2021-11-02 22:22:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:54,522 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2021-11-02 22:22:54,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2021-11-02 22:22:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-02 22:22:54,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:54,524 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:54,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:54,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 22:22:54,748 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:54,748 INFO L85 PathProgramCache]: Analyzing trace with hash -616510976, now seen corresponding path program 3 times [2021-11-02 22:22:54,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:54,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759331634] [2021-11-02 22:22:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:54,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:22:54,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:54,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759331634] [2021-11-02 22:22:54,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759331634] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:54,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807326836] [2021-11-02 22:22:54,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:22:54,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:54,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:54,900 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:54,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 22:22:55,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 22:22:55,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:22:55,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:22:55,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-02 22:22:55,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807326836] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:55,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:22:55,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2021-11-02 22:22:55,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804460516] [2021-11-02 22:22:55,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 22:22:55,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:55,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 22:22:55,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:22:55,960 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:56,078 INFO L93 Difference]: Finished difference Result 222 states and 262 transitions. [2021-11-02 22:22:56,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 22:22:56,079 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 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 55 [2021-11-02 22:22:56,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:56,082 INFO L225 Difference]: With dead ends: 222 [2021-11-02 22:22:56,083 INFO L226 Difference]: Without dead ends: 132 [2021-11-02 22:22:56,084 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:22:56,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-02 22:22:56,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 126. [2021-11-02 22:22:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 125 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2021-11-02 22:22:56,094 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 55 [2021-11-02 22:22:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:56,094 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2021-11-02 22:22:56,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2021-11-02 22:22:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 22:22:56,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:56,096 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:56,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:56,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-02 22:22:56,328 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:56,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2087878263, now seen corresponding path program 4 times [2021-11-02 22:22:56,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:56,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736980677] [2021-11-02 22:22:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:56,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 22:22:56,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:56,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736980677] [2021-11-02 22:22:56,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736980677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:56,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247930751] [2021-11-02 22:22:56,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:22:56,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:56,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:56,542 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:56,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 22:22:56,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:22:56,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:22:56,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:22:56,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 22:22:57,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247930751] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:57,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:22:57,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-11-02 22:22:57,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344492046] [2021-11-02 22:22:57,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 22:22:57,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:57,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 22:22:57,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:22:57,045 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:57,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:57,096 INFO L93 Difference]: Finished difference Result 225 states and 263 transitions. [2021-11-02 22:22:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:22:57,097 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 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 61 [2021-11-02 22:22:57,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:57,098 INFO L225 Difference]: With dead ends: 225 [2021-11-02 22:22:57,098 INFO L226 Difference]: Without dead ends: 129 [2021-11-02 22:22:57,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:22:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-02 22:22:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-02 22:22:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 128 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) [2021-11-02 22:22:57,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2021-11-02 22:22:57,105 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 61 [2021-11-02 22:22:57,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:57,106 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2021-11-02 22:22:57,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:57,106 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2021-11-02 22:22:57,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:22:57,107 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:57,107 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:57,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:22:57,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 22:22:57,324 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:22:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1261934333, now seen corresponding path program 5 times [2021-11-02 22:22:57,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:57,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542319998] [2021-11-02 22:22:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:57,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:22:57,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:57,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542319998] [2021-11-02 22:22:57,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542319998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:57,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987947071] [2021-11-02 22:22:57,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:22:57,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:57,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:57,422 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:57,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 22:23:02,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-11-02 22:23:02,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:23:02,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:23:02,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:23:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:02,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987947071] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:02,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:23:02,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-02 22:23:02,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014231626] [2021-11-02 22:23:02,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:23:02,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:23:02,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:23:02,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:23:02,435 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-11-02 22:23:02,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:23:02,471 INFO L93 Difference]: Finished difference Result 214 states and 252 transitions. [2021-11-02 22:23:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:23:02,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) Word has length 64 [2021-11-02 22:23:02,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:23:02,473 INFO L225 Difference]: With dead ends: 214 [2021-11-02 22:23:02,473 INFO L226 Difference]: Without dead ends: 139 [2021-11-02 22:23:02,474 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:23:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-02 22:23:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2021-11-02 22:23:02,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 119 states have (on average 1.2941176470588236) internal successors, (154), 134 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) [2021-11-02 22:23:02,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 154 transitions. [2021-11-02 22:23:02,483 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 154 transitions. Word has length 64 [2021-11-02 22:23:02,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:23:02,483 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 154 transitions. [2021-11-02 22:23:02,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-11-02 22:23:02,483 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 154 transitions. [2021-11-02 22:23:02,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 22:23:02,484 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:23:02,485 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:23:02,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:23:02,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:02,706 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:23:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:23:02,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1773536480, now seen corresponding path program 6 times [2021-11-02 22:23:02,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:23:02,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167530912] [2021-11-02 22:23:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:23:02,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:23:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:23:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:02,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:23:02,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167530912] [2021-11-02 22:23:02,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167530912] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:02,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314418184] [2021-11-02 22:23:02,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:23:02,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:02,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:23:02,805 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:23:02,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 22:23:15,637 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-11-02 22:23:15,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:23:15,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:23:15,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:23:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:15,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314418184] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:15,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:23:15,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-11-02 22:23:15,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212147924] [2021-11-02 22:23:15,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:23:15,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:23:15,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:23:15,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:23:15,832 INFO L87 Difference]: Start difference. First operand 135 states and 154 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:23:15,870 INFO L93 Difference]: Finished difference Result 223 states and 261 transitions. [2021-11-02 22:23:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:23:15,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 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 67 [2021-11-02 22:23:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:23:15,872 INFO L225 Difference]: With dead ends: 223 [2021-11-02 22:23:15,872 INFO L226 Difference]: Without dead ends: 145 [2021-11-02 22:23:15,873 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:23:15,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-02 22:23:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2021-11-02 22:23:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 125 states have (on average 1.28) internal successors, (160), 140 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) [2021-11-02 22:23:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 160 transitions. [2021-11-02 22:23:15,899 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 160 transitions. Word has length 67 [2021-11-02 22:23:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:23:15,900 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 160 transitions. [2021-11-02 22:23:15,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 160 transitions. [2021-11-02 22:23:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 22:23:15,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:23:15,908 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:23:15,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:23:16,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:16,136 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:23:16,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:23:16,136 INFO L85 PathProgramCache]: Analyzing trace with hash 948109283, now seen corresponding path program 7 times [2021-11-02 22:23:16,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:23:16,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067081010] [2021-11-02 22:23:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:23:16,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:23:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:23:16,247 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:16,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:23:16,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067081010] [2021-11-02 22:23:16,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067081010] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:16,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395303249] [2021-11-02 22:23:16,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:23:16,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:16,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:23:16,249 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:23:16,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 22:23:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:23:16,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:23:16,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:23:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:16,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395303249] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:16,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:23:16,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-11-02 22:23:16,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506783003] [2021-11-02 22:23:16,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:23:16,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:23:16,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:23:16,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:23:16,711 INFO L87 Difference]: Start difference. First operand 141 states and 160 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:16,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:23:16,753 INFO L93 Difference]: Finished difference Result 232 states and 270 transitions. [2021-11-02 22:23:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:23:16,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 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 [2021-11-02 22:23:16,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:23:16,755 INFO L225 Difference]: With dead ends: 232 [2021-11-02 22:23:16,755 INFO L226 Difference]: Without dead ends: 151 [2021-11-02 22:23:16,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:23:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-02 22:23:16,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-11-02 22:23:16,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 131 states have (on average 1.2671755725190839) internal successors, (166), 146 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) [2021-11-02 22:23:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 166 transitions. [2021-11-02 22:23:16,763 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 166 transitions. Word has length 70 [2021-11-02 22:23:16,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:23:16,764 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 166 transitions. [2021-11-02 22:23:16,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:16,764 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 166 transitions. [2021-11-02 22:23:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 22:23:16,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:23:16,766 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:23:16,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:23:16,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:16,986 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:23:16,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:23:16,986 INFO L85 PathProgramCache]: Analyzing trace with hash -665746944, now seen corresponding path program 8 times [2021-11-02 22:23:16,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:23:16,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060860520] [2021-11-02 22:23:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:23:16,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:23:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:23:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:17,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:23:17,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060860520] [2021-11-02 22:23:17,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060860520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:17,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438091180] [2021-11-02 22:23:17,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:23:17,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:17,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:23:17,120 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:23:17,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 22:23:17,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:23:17,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:23:17,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:23:17,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:23:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:17,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438091180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:17,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:23:17,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-11-02 22:23:17,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841329169] [2021-11-02 22:23:17,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:23:17,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:23:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:23:17,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:23:17,865 INFO L87 Difference]: Start difference. First operand 147 states and 166 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:17,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:23:17,926 INFO L93 Difference]: Finished difference Result 241 states and 279 transitions. [2021-11-02 22:23:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:23:17,927 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 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 73 [2021-11-02 22:23:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:23:17,928 INFO L225 Difference]: With dead ends: 241 [2021-11-02 22:23:17,928 INFO L226 Difference]: Without dead ends: 157 [2021-11-02 22:23:17,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:23:17,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-02 22:23:17,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2021-11-02 22:23:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 137 states have (on average 1.2554744525547445) internal successors, (172), 152 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) [2021-11-02 22:23:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2021-11-02 22:23:17,937 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 73 [2021-11-02 22:23:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:23:17,938 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2021-11-02 22:23:17,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:17,938 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2021-11-02 22:23:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:23:17,939 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:23:17,939 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:23:17,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:23:18,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-02 22:23:18,160 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:23:18,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:23:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1192694077, now seen corresponding path program 9 times [2021-11-02 22:23:18,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:23:18,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858293415] [2021-11-02 22:23:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:23:18,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:23:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:23:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 1 proven. 70 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:18,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:23:18,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858293415] [2021-11-02 22:23:18,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858293415] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:18,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805902069] [2021-11-02 22:23:18,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:23:18,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:18,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:23:18,293 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:23:18,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 22:23:29,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-02 22:23:29,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:23:29,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:23:29,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:23:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 1 proven. 70 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:29,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805902069] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:29,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:23:29,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-11-02 22:23:29,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662086485] [2021-11-02 22:23:29,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:23:29,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:23:29,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:23:29,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:23:29,695 INFO L87 Difference]: Start difference. First operand 153 states and 172 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:23:29,748 INFO L93 Difference]: Finished difference Result 250 states and 288 transitions. [2021-11-02 22:23:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:23:29,749 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 [2021-11-02 22:23:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:23:29,750 INFO L225 Difference]: With dead ends: 250 [2021-11-02 22:23:29,750 INFO L226 Difference]: Without dead ends: 163 [2021-11-02 22:23:29,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:23:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-02 22:23:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2021-11-02 22:23:29,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 143 states have (on average 1.2447552447552448) internal successors, (178), 158 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) [2021-11-02 22:23:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 178 transitions. [2021-11-02 22:23:29,758 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 178 transitions. Word has length 76 [2021-11-02 22:23:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:23:29,758 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 178 transitions. [2021-11-02 22:23:29,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:29,759 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 178 transitions. [2021-11-02 22:23:29,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:23:29,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:23:29,760 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:23:29,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:23:29,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-02 22:23:29,979 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:23:29,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:23:29,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1369266400, now seen corresponding path program 10 times [2021-11-02 22:23:29,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:23:29,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982009248] [2021-11-02 22:23:29,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:23:29,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:23:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:23:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 1 proven. 92 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:30,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:23:30,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982009248] [2021-11-02 22:23:30,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982009248] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:30,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552647766] [2021-11-02 22:23:30,133 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:23:30,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:30,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:23:30,134 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:23:30,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 22:23:30,614 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:23:30,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:23:30,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:23:30,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:23:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 1 proven. 92 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:30,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552647766] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:30,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:23:30,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-11-02 22:23:30,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753799301] [2021-11-02 22:23:30,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:23:30,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:23:30,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:23:30,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:23:30,847 INFO L87 Difference]: Start difference. First operand 159 states and 178 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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) [2021-11-02 22:23:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:23:30,898 INFO L93 Difference]: Finished difference Result 259 states and 297 transitions. [2021-11-02 22:23:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:23:30,899 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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) Word has length 79 [2021-11-02 22:23:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:23:30,900 INFO L225 Difference]: With dead ends: 259 [2021-11-02 22:23:30,900 INFO L226 Difference]: Without dead ends: 169 [2021-11-02 22:23:30,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:23:30,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-02 22:23:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2021-11-02 22:23:30,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 149 states have (on average 1.2348993288590604) internal successors, (184), 164 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) [2021-11-02 22:23:30,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 184 transitions. [2021-11-02 22:23:30,909 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 184 transitions. Word has length 79 [2021-11-02 22:23:30,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:23:30,909 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 184 transitions. [2021-11-02 22:23:30,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 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) [2021-11-02 22:23:30,909 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 184 transitions. [2021-11-02 22:23:30,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:23:30,910 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:23:30,911 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:23:30,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:23:31,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-02 22:23:31,130 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2021-11-02 22:23:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:23:31,130 INFO L85 PathProgramCache]: Analyzing trace with hash -300403293, now seen corresponding path program 11 times [2021-11-02 22:23:31,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:23:31,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093916721] [2021-11-02 22:23:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:23:31,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:23:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:23:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 1 proven. 117 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-02 22:23:31,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:23:31,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093916721] [2021-11-02 22:23:31,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093916721] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:23:31,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666616727] [2021-11-02 22:23:31,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:23:31,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:23:31,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:23:31,276 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:23:31,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a17ec6c-5870-4575-8414-58cbde3118f7/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process