./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo_step2-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo_step2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa --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 76fcbcb67039c0a78cfe1723cb1895d2882967fdc056ee8f9638db41d873b34f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:58:44,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:58:44,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:58:44,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:58:44,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:58:44,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:58:44,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:58:44,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:58:44,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:58:44,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:58:44,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:58:44,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:58:44,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:58:44,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:58:44,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:58:44,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:58:44,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:58:44,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:58:44,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:58:44,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:58:44,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:58:44,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:58:44,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:58:44,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:58:44,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:58:44,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:58:44,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:58:44,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:58:44,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:58:44,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:58:44,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:58:44,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:58:44,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:58:44,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:58:44,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:58:44,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:58:44,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:58:44,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:58:44,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:58:44,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:58:44,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:58:44,927 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-06 23:58:44,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:58:44,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:58:44,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:58:44,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:58:44,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:58:44,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:58:44,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:58:44,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:58:44,954 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:58:44,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:58:44,955 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:58:44,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:58:44,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:58:44,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:58:44,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:58:44,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:58:44,956 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-06 23:58:44,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:58:44,956 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:58:44,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:58:44,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:58:44,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:58:44,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:58:44,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:58:44,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:58:44,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:58:44,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:58:44,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:58:44,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:58:44,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:58:44,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:58:44,959 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_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76fcbcb67039c0a78cfe1723cb1895d2882967fdc056ee8f9638db41d873b34f [2021-12-06 23:58:45,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:58:45,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:58:45,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:58:45,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:58:45,181 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:58:45,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-crafted/Cairo_step2-2.c [2021-12-06 23:58:45,241 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/data/13ea668df/018c1b1c1b1a491caa0f485888031786/FLAGab164626a [2021-12-06 23:58:45,605 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:58:45,606 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/sv-benchmarks/c/termination-crafted/Cairo_step2-2.c [2021-12-06 23:58:45,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/data/13ea668df/018c1b1c1b1a491caa0f485888031786/FLAGab164626a [2021-12-06 23:58:45,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/data/13ea668df/018c1b1c1b1a491caa0f485888031786 [2021-12-06 23:58:46,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:58:46,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:58:46,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:58:46,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:58:46,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:58:46,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f42b0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46, skipping insertion in model container [2021-12-06 23:58:46,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:58:46,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:58:46,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:58:46,158 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:58:46,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:58:46,182 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:58:46,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46 WrapperNode [2021-12-06 23:58:46,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:58:46,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:58:46,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:58:46,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:58:46,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,206 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2021-12-06 23:58:46,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:58:46,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:58:46,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:58:46,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:58:46,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:58:46,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:58:46,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:58:46,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:58:46,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46" (1/1) ... [2021-12-06 23:58:46,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:58:46,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:46,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:58:46,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:58:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:58:46,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:58:46,338 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:58:46,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:58:46,405 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:58:46,412 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:58:46,412 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 23:58:46,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:58:46 BoogieIcfgContainer [2021-12-06 23:58:46,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:58:46,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:58:46,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:58:46,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:58:46,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:58:46" (1/3) ... [2021-12-06 23:58:46,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ea8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:58:46, skipping insertion in model container [2021-12-06 23:58:46,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:46" (2/3) ... [2021-12-06 23:58:46,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ea8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:58:46, skipping insertion in model container [2021-12-06 23:58:46,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:58:46" (3/3) ... [2021-12-06 23:58:46,423 INFO L111 eAbstractionObserver]: Analyzing ICFG Cairo_step2-2.c [2021-12-06 23:58:46,429 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:58:46,429 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 23:58:46,467 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:58:46,473 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 [2021-12-06 23:58:46,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 23:58:46,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 23:58:46,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:46,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 23:58:46,489 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-06 23:58:46,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash 28693987, now seen corresponding path program 1 times [2021-12-06 23:58:46,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:46,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213929779] [2021-12-06 23:58:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:46,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:46,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:46,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213929779] [2021-12-06 23:58:46,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213929779] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:58:46,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:58:46,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:58:46,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222973811] [2021-12-06 23:58:46,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:46,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:58:46,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:46,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:58:46,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:46,643 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:46,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:46,667 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-12-06 23:58:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:58:46,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-06 23:58:46,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:46,676 INFO L225 Difference]: With dead ends: 16 [2021-12-06 23:58:46,676 INFO L226 Difference]: Without dead ends: 7 [2021-12-06 23:58:46,678 INFO L932 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 [2021-12-06 23:58:46,682 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:46,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 6 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:46,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-12-06 23:58:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-12-06 23:58:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-12-06 23:58:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-12-06 23:58:46,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-12-06 23:58:46,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:46,708 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-12-06 23:58:46,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:46,708 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-12-06 23:58:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 23:58:46,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:46,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 23:58:46,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:58:46,709 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-06 23:58:46,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash 889513645, now seen corresponding path program 1 times [2021-12-06 23:58:46,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:46,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846275017] [2021-12-06 23:58:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:46,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:46,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846275017] [2021-12-06 23:58:46,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846275017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:58:46,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:58:46,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:58:46,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308979438] [2021-12-06 23:58:46,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:46,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:58:46,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:46,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:58:46,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:46,734 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:46,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:46,746 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-12-06 23:58:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:58:46,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-12-06 23:58:46,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:46,747 INFO L225 Difference]: With dead ends: 11 [2021-12-06 23:58:46,748 INFO L226 Difference]: Without dead ends: 10 [2021-12-06 23:58:46,748 INFO L932 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 [2021-12-06 23:58:46,750 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:46,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-06 23:58:46,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-06 23:58:46,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-12-06 23:58:46,754 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2021-12-06 23:58:46,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:46,754 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-12-06 23:58:46,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-12-06 23:58:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:58:46,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:46,755 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-06 23:58:46,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:58:46,755 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-06 23:58:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash -447174367, now seen corresponding path program 1 times [2021-12-06 23:58:46,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:46,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348728993] [2021-12-06 23:58:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:46,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:46,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:46,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348728993] [2021-12-06 23:58:46,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348728993] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:46,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417672165] [2021-12-06 23:58:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:46,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:46,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:46,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:46,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:58:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:46,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:58:46,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:46,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:46,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417672165] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:46,949 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:46,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-06 23:58:46,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422238070] [2021-12-06 23:58:46,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:46,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:58:46,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:46,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:58:46,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:58:46,952 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:46,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:46,989 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-12-06 23:58:46,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:58:46,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 23:58:46,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:46,991 INFO L225 Difference]: With dead ends: 20 [2021-12-06 23:58:46,992 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 23:58:46,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:58:46,994 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:46,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 23:58:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-06 23:58:47,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 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) [2021-12-06 23:58:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-12-06 23:58:47,002 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2021-12-06 23:58:47,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:47,003 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-12-06 23:58:47,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-12-06 23:58:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 23:58:47,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:47,004 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2021-12-06 23:58:47,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:58:47,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:47,209 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-06 23:58:47,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:47,210 INFO L85 PathProgramCache]: Analyzing trace with hash -169525843, now seen corresponding path program 2 times [2021-12-06 23:58:47,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:47,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818338556] [2021-12-06 23:58:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:47,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:47,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:47,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818338556] [2021-12-06 23:58:47,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818338556] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:47,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338131866] [2021-12-06 23:58:47,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:58:47,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:47,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:47,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:47,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:58:47,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:58:47,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:58:47,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:58:47,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:47,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:47,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338131866] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:47,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:47,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-06 23:58:47,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577736337] [2021-12-06 23:58:47,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:47,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:58:47,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:47,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:58:47,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:58:47,480 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:47,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:47,529 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2021-12-06 23:58:47,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:58:47,530 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-06 23:58:47,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:47,531 INFO L225 Difference]: With dead ends: 38 [2021-12-06 23:58:47,531 INFO L226 Difference]: Without dead ends: 37 [2021-12-06 23:58:47,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:58:47,533 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:47,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:47,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-06 23:58:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-12-06 23:58:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-12-06 23:58:47,541 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 18 [2021-12-06 23:58:47,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:47,542 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-12-06 23:58:47,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:47,542 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-12-06 23:58:47,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 23:58:47,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:47,543 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1] [2021-12-06 23:58:47,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:58:47,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:47,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-06 23:58:47,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:47,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1336283181, now seen corresponding path program 3 times [2021-12-06 23:58:47,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:47,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901143963] [2021-12-06 23:58:47,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:47,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:47,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:47,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901143963] [2021-12-06 23:58:47,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901143963] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:47,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20186326] [2021-12-06 23:58:47,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:58:47,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:47,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:47,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:47,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:58:47,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-06 23:58:47,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:58:47,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:58:47,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:47,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:48,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20186326] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:48,186 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:48,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-06 23:58:48,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344937267] [2021-12-06 23:58:48,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:48,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 23:58:48,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:48,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 23:58:48,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:58:48,190 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:48,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:48,268 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2021-12-06 23:58:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 23:58:48,268 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 23:58:48,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:48,270 INFO L225 Difference]: With dead ends: 74 [2021-12-06 23:58:48,270 INFO L226 Difference]: Without dead ends: 73 [2021-12-06 23:58:48,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:58:48,272 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:48,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:58:48,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-06 23:58:48,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-12-06 23:58:48,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 72 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2021-12-06 23:58:48,283 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 36 [2021-12-06 23:58:48,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:48,284 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2021-12-06 23:58:48,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:48,284 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2021-12-06 23:58:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 23:58:48,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:48,287 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1, 1] [2021-12-06 23:58:48,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:58:48,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:48,489 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-06 23:58:48,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1274074413, now seen corresponding path program 4 times [2021-12-06 23:58:48,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:48,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155325439] [2021-12-06 23:58:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:48,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:48,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:48,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155325439] [2021-12-06 23:58:48,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155325439] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:48,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166399310] [2021-12-06 23:58:48,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:58:48,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:48,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:48,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:48,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:58:48,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:58:48,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:58:48,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 23:58:48,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:48,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:49,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166399310] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:49,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:49,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-06 23:58:49,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126872809] [2021-12-06 23:58:49,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:49,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-06 23:58:49,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:49,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-06 23:58:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 23:58:49,553 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:49,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:49,703 INFO L93 Difference]: Finished difference Result 146 states and 169 transitions. [2021-12-06 23:58:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 23:58:49,703 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-12-06 23:58:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:49,705 INFO L225 Difference]: With dead ends: 146 [2021-12-06 23:58:49,705 INFO L226 Difference]: Without dead ends: 145 [2021-12-06 23:58:49,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 23:58:49,708 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:49,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:58:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-06 23:58:49,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-12-06 23:58:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0069444444444444) internal successors, (145), 144 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) [2021-12-06 23:58:49,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2021-12-06 23:58:49,723 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 72 [2021-12-06 23:58:49,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:49,723 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2021-12-06 23:58:49,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.021276595744681) internal successors, (142), 48 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2021-12-06 23:58:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-06 23:58:49,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:49,725 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 46, 1, 1, 1, 1] [2021-12-06 23:58:49,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:58:49,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 23:58:49,926 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-06 23:58:49,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:49,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2081087277, now seen corresponding path program 5 times [2021-12-06 23:58:49,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:49,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426395212] [2021-12-06 23:58:49,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:49,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:50,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:50,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426395212] [2021-12-06 23:58:50,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426395212] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:50,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759701913] [2021-12-06 23:58:50,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:58:50,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:50,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:50,619 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:50,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:58:50,703 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-06 23:58:50,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:58:50,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 23:58:50,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:50,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:52,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759701913] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:52,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:52,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-06 23:58:52,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94588047] [2021-12-06 23:58:52,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:52,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-06 23:58:52,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:52,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-06 23:58:52,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-06 23:58:52,820 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand has 96 states, 95 states have (on average 3.0105263157894737) internal successors, (286), 96 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:53,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:53,135 INFO L93 Difference]: Finished difference Result 290 states and 337 transitions. [2021-12-06 23:58:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-06 23:58:53,135 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 3.0105263157894737) internal successors, (286), 96 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-12-06 23:58:53,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:53,138 INFO L225 Difference]: With dead ends: 290 [2021-12-06 23:58:53,138 INFO L226 Difference]: Without dead ends: 289 [2021-12-06 23:58:53,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-06 23:58:53,141 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:53,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:58:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-06 23:58:53,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-12-06 23:58:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.0034722222222223) internal successors, (289), 288 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2021-12-06 23:58:53,163 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 144 [2021-12-06 23:58:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:53,164 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2021-12-06 23:58:53,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 3.0105263157894737) internal successors, (286), 96 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2021-12-06 23:58:53,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-12-06 23:58:53,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:53,170 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 94, 1, 1, 1, 1] [2021-12-06 23:58:53,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:58:53,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:53,371 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-06 23:58:53,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:53,371 INFO L85 PathProgramCache]: Analyzing trace with hash 223408941, now seen corresponding path program 6 times [2021-12-06 23:58:53,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:53,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138404084] [2021-12-06 23:58:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:53,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 0 proven. 13395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:55,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:55,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138404084] [2021-12-06 23:58:55,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138404084] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:55,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483721720] [2021-12-06 23:58:55,692 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:58:55,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:55,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:55,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:55,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:58:55,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-06 23:58:55,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:58:55,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-06 23:58:55,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 0 proven. 13395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:56,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 13395 backedges. 0 proven. 13395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:02,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483721720] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:02,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:59:02,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-06 23:59:02,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735986739] [2021-12-06 23:59:02,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:02,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-06 23:59:02,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:59:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-06 23:59:02,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-06 23:59:02,890 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand has 192 states, 191 states have (on average 3.005235602094241) internal successors, (574), 192 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:03,830 INFO L93 Difference]: Finished difference Result 578 states and 673 transitions. [2021-12-06 23:59:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-12-06 23:59:03,831 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 3.005235602094241) internal successors, (574), 192 states have internal predecessors, (574), 0 states have call successors, (0), 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 288 [2021-12-06 23:59:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:03,834 INFO L225 Difference]: With dead ends: 578 [2021-12-06 23:59:03,834 INFO L226 Difference]: Without dead ends: 577 [2021-12-06 23:59:03,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 479 SyntacticMatches, 1 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-06 23:59:03,837 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:03,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:59:03,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-12-06 23:59:03,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2021-12-06 23:59:03,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.0017361111111112) internal successors, (577), 576 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 577 transitions. [2021-12-06 23:59:03,858 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 577 transitions. Word has length 288 [2021-12-06 23:59:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:03,858 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 577 transitions. [2021-12-06 23:59:03,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 3.005235602094241) internal successors, (574), 192 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:03,859 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 577 transitions. [2021-12-06 23:59:03,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2021-12-06 23:59:03,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:03,869 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 190, 1, 1, 1, 1] [2021-12-06 23:59:03,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:59:04,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:04,069 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-06 23:59:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1943725267, now seen corresponding path program 7 times [2021-12-06 23:59:04,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:59:04,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560598078] [2021-12-06 23:59:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:04,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:59:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 54435 backedges. 0 proven. 54435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:13,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:59:13,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560598078] [2021-12-06 23:59:13,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560598078] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:59:13,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408460615] [2021-12-06 23:59:13,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:59:13,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:13,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:59:13,062 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:59:13,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:59:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:13,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 192 conjunts are in the unsatisfiable core [2021-12-06 23:59:13,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 54435 backedges. 0 proven. 54435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:13,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 54435 backedges. 0 proven. 54435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:39,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408460615] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:39,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:59:39,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-12-06 23:59:39,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371967018] [2021-12-06 23:59:39,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:39,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-12-06 23:59:39,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:59:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-12-06 23:59:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-12-06 23:59:39,675 INFO L87 Difference]: Start difference. First operand 577 states and 577 transitions. Second operand has 384 states, 383 states have (on average 3.0026109660574414) internal successors, (1150), 384 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:43,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:43,478 INFO L93 Difference]: Finished difference Result 1154 states and 1345 transitions. [2021-12-06 23:59:43,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-12-06 23:59:43,480 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 3.0026109660574414) internal successors, (1150), 384 states have internal predecessors, (1150), 0 states have call successors, (0), 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 576 [2021-12-06 23:59:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:43,484 INFO L225 Difference]: With dead ends: 1154 [2021-12-06 23:59:43,484 INFO L226 Difference]: Without dead ends: 1153 [2021-12-06 23:59:43,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1342 GetRequests, 959 SyntacticMatches, 1 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 33.5s TimeCoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-12-06 23:59:43,492 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:43,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 23:59:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2021-12-06 23:59:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1153. [2021-12-06 23:59:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.0008680555555556) internal successors, (1153), 1152 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1153 transitions. [2021-12-06 23:59:43,516 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1153 transitions. Word has length 576 [2021-12-06 23:59:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:43,517 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1153 transitions. [2021-12-06 23:59:43,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 3.0026109660574414) internal successors, (1150), 384 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1153 transitions. [2021-12-06 23:59:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2021-12-06 23:59:43,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:43,547 INFO L514 BasicCegarLoop]: trace histogram [383, 383, 382, 1, 1, 1, 1] [2021-12-06 23:59:43,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:59:43,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:43,748 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-06 23:59:43,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:43,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1158845651, now seen corresponding path program 8 times [2021-12-06 23:59:43,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:59:43,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11841844] [2021-12-06 23:59:43,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:43,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:59:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:00:19,647 INFO L134 CoverageAnalysis]: Checked inductivity of 219459 backedges. 0 proven. 219459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:00:19,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:00:19,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11841844] [2021-12-07 00:00:19,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11841844] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:00:19,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344845065] [2021-12-07 00:00:19,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:00:19,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:00:19,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:00:19,649 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:00:19,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:00:19,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:00:19,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:00:19,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 384 conjunts are in the unsatisfiable core [2021-12-07 00:00:19,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:00:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 219459 backedges. 0 proven. 219459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:00:21,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:02:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 219459 backedges. 0 proven. 219459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:02:04,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344845065] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:02:04,515 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:02:04,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2021-12-07 00:02:04,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723894594] [2021-12-07 00:02:04,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:02:04,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2021-12-07 00:02:04,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:02:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2021-12-07 00:02:04,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294528, Invalid=294528, Unknown=0, NotChecked=0, Total=589056 [2021-12-07 00:02:04,583 INFO L87 Difference]: Start difference. First operand 1153 states and 1153 transitions. Second operand has 768 states, 767 states have (on average 3.0013037809647978) internal successors, (2302), 768 states have internal predecessors, (2302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:02:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:02:32,039 INFO L93 Difference]: Finished difference Result 2306 states and 2689 transitions. [2021-12-07 00:02:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2021-12-07 00:02:32,041 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 3.0013037809647978) internal successors, (2302), 768 states have internal predecessors, (2302), 0 states have call successors, (0), 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 1152 [2021-12-07 00:02:32,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:02:32,050 INFO L225 Difference]: With dead ends: 2306 [2021-12-07 00:02:32,050 INFO L226 Difference]: Without dead ends: 2305 [2021-12-07 00:02:32,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2686 GetRequests, 1919 SyntacticMatches, 1 SemanticMatches, 766 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 136.1s TimeCoverageRelationStatistics Valid=294528, Invalid=294528, Unknown=0, NotChecked=0, Total=589056 [2021-12-07 00:02:32,078 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:02:32,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2307 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-07 00:02:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2021-12-07 00:02:32,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2305. [2021-12-07 00:02:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2304 states have (on average 1.0004340277777777) internal successors, (2305), 2304 states have internal predecessors, (2305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:02:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 2305 transitions. [2021-12-07 00:02:32,140 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 2305 transitions. Word has length 1152 [2021-12-07 00:02:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:02:32,142 INFO L470 AbstractCegarLoop]: Abstraction has 2305 states and 2305 transitions. [2021-12-07 00:02:32,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 3.0013037809647978) internal successors, (2302), 768 states have internal predecessors, (2302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:02:32,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 2305 transitions. [2021-12-07 00:02:32,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2305 [2021-12-07 00:02:32,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:02:32,178 INFO L514 BasicCegarLoop]: trace histogram [767, 767, 766, 1, 1, 1, 1] [2021-12-07 00:02:32,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 00:02:32,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 00:02:32,379 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-07 00:02:32,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:02:32,380 INFO L85 PathProgramCache]: Analyzing trace with hash -587330771, now seen corresponding path program 9 times [2021-12-07 00:02:32,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:02:32,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484395470] [2021-12-07 00:02:32,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:02:32,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:02:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:04:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 881283 backedges. 0 proven. 881283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:04:53,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:04:53,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484395470] [2021-12-07 00:04:53,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484395470] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:04:53,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827082081] [2021-12-07 00:04:53,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:04:53,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:04:53,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:04:53,979 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:04:53,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75be6867-d07d-4fea-bb27-3dc5c8732f63/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 00:05:34,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 767 check-sat command(s) [2021-12-07 00:05:34,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:05:34,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 3839 conjuncts, 768 conjunts are in the unsatisfiable core [2021-12-07 00:05:34,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:05:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 881283 backedges. 0 proven. 881283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:05:37,265 INFO L328 TraceCheckSpWp]: Computing backward predicates...