./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF --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 32bit --witnessprinter.graph.data.programhash efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:31:52,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:31:52,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:31:52,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:31:52,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:31:52,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:31:52,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:31:52,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:31:52,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:31:52,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:31:52,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:31:52,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:31:52,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:31:52,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:31:52,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:31:52,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:31:52,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:31:52,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:31:52,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:31:52,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:31:52,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:31:52,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:31:52,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:31:52,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:31:52,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:31:52,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:31:52,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:31:52,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:31:52,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:31:52,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:31:52,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:31:52,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:31:52,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:31:52,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:31:52,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:31:52,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:31:52,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:31:52,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:31:52,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:31:52,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:31:52,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:31:52,248 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-20 05:31:52,293 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:31:52,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:31:52,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:31:52,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:31:52,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:31:52,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:31:52,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:31:52,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:31:52,305 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:31:52,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:31:52,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:31:52,307 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:31:52,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:31:52,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:31:52,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:31:52,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:31:52,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:31:52,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:31:52,308 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 05:31:52,309 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:31:52,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:31:52,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:31:52,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:31:52,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:31:52,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:31:52,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:31:52,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:31:52,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:31:52,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:31:52,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:31:52,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:31:52,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:31:52,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:31:52,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:31:52,312 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_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efaea2320311f06fbd3071893d75fb70222c33e449b43348105f12b548a90ab4 [2021-11-20 05:31:52,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:31:52,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:31:52,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:31:52,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:31:52,613 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:31:52,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2021-11-20 05:31:52,708 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/data/f14cc4697/ef991a422b99470b927420976e22cbd7/FLAG50524dfad [2021-11-20 05:31:53,443 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:31:53,444 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i [2021-11-20 05:31:53,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/data/f14cc4697/ef991a422b99470b927420976e22cbd7/FLAG50524dfad [2021-11-20 05:31:53,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/data/f14cc4697/ef991a422b99470b927420976e22cbd7 [2021-11-20 05:31:53,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:31:53,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:31:53,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:31:53,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:31:53,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:31:53,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@725e810a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:53, skipping insertion in model container [2021-11-20 05:31:53,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:31:53" (1/1) ... [2021-11-20 05:31:53,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:31:53,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:31:54,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i[33021,33034] [2021-11-20 05:31:54,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:31:54,238 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:31:54,274 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-3.i[33021,33034] [2021-11-20 05:31:54,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:31:54,397 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:31:54,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54 WrapperNode [2021-11-20 05:31:54,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:31:54,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:31:54,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:31:54,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:31:54,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54" (1/1) ... [2021-11-20 05:31:54,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54" (1/1) ... [2021-11-20 05:31:54,523 INFO L137 Inliner]: procedures = 177, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1451 [2021-11-20 05:31:54,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:31:54,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:31:54,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:31:54,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:31:54,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54" (1/1) ... [2021-11-20 05:31:54,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54" (1/1) ... [2021-11-20 05:31:54,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54" (1/1) ... [2021-11-20 05:31:54,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54" (1/1) ... [2021-11-20 05:31:54,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54" (1/1) ... [2021-11-20 05:31:54,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54" (1/1) ... [2021-11-20 05:31:54,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54" (1/1) ... [2021-11-20 05:31:54,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:31:54,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:31:54,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:31:54,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:31:54,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54" (1/1) ... [2021-11-20 05:31:54,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:31:54,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:31:54,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:31:54,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:31:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:31:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 05:31:54,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 05:31:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:31:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 05:31:54,861 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 05:31:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:31:54,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:31:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:31:54,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:31:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:31:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:31:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:31:54,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:31:54,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:31:55,157 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:31:55,159 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:31:56,617 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:31:56,639 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:31:56,639 INFO L301 CfgBuilder]: Removed 77 assume(true) statements. [2021-11-20 05:31:56,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:31:56 BoogieIcfgContainer [2021-11-20 05:31:56,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:31:56,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:31:56,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:31:56,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:31:56,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:31:53" (1/3) ... [2021-11-20 05:31:56,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8cfca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:31:56, skipping insertion in model container [2021-11-20 05:31:56,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:31:54" (2/3) ... [2021-11-20 05:31:56,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8cfca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:31:56, skipping insertion in model container [2021-11-20 05:31:56,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:31:56" (3/3) ... [2021-11-20 05:31:56,660 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test4-3.i [2021-11-20 05:31:56,666 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:31:56,668 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-20 05:31:56,739 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:31:56,754 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:31:56,754 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-20 05:31:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:31:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 05:31:56,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:31:56,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 05:31:56,797 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:31:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:31:56,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2021-11-20 05:31:56,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:31:56,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574459247] [2021-11-20 05:31:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:31:56,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:31:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:31:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:31:57,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:31:57,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574459247] [2021-11-20 05:31:57,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574459247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:31:57,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:31:57,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:31:57,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501757078] [2021-11-20 05:31:57,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:31:57,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:31:57,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:31:57,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:31:57,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:31:57,089 INFO L87 Difference]: Start difference. First operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.0) 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) [2021-11-20 05:31:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:31:57,287 INFO L93 Difference]: Finished difference Result 715 states and 1205 transitions. [2021-11-20 05:31:57,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:31:57,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 [2021-11-20 05:31:57,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:31:57,321 INFO L225 Difference]: With dead ends: 715 [2021-11-20 05:31:57,321 INFO L226 Difference]: Without dead ends: 392 [2021-11-20 05:31:57,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:31:57,336 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 217 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:31:57,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 725 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:31:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-20 05:31:57,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2021-11-20 05:31:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 211 states have internal predecessors, (262), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:31:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 294 transitions. [2021-11-20 05:31:57,407 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 294 transitions. Word has length 6 [2021-11-20 05:31:57,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:31:57,407 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 294 transitions. [2021-11-20 05:31:57,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2021-11-20 05:31:57,408 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 294 transitions. [2021-11-20 05:31:57,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:31:57,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:31:57,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:31:57,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:31:57,415 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:31:57,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:31:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2021-11-20 05:31:57,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:31:57,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696088728] [2021-11-20 05:31:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:31:57,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:31:57,467 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:31:57,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005103671] [2021-11-20 05:31:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:31:57,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:31:57,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:31:57,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:31:57,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:31:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:31:57,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:31:57,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:31:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:31:58,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:31:58,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:31:58,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696088728] [2021-11-20 05:31:58,119 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:31:58,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005103671] [2021-11-20 05:31:58,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005103671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:31:58,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:31:58,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:31:58,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102220101] [2021-11-20 05:31:58,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:31:58,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:31:58,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:31:58,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:31:58,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:31:58,135 INFO L87 Difference]: Start difference. First operand 220 states and 294 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:31:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:31:58,234 INFO L93 Difference]: Finished difference Result 455 states and 613 transitions. [2021-11-20 05:31:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:31:58,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-20 05:31:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:31:58,237 INFO L225 Difference]: With dead ends: 455 [2021-11-20 05:31:58,237 INFO L226 Difference]: Without dead ends: 241 [2021-11-20 05:31:58,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:31:58,240 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:31:58,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:31:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-20 05:31:58,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-11-20 05:31:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 217 states have (on average 1.2995391705069124) internal successors, (282), 231 states have internal predecessors, (282), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:31:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2021-11-20 05:31:58,259 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 103 [2021-11-20 05:31:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:31:58,260 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2021-11-20 05:31:58,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:31:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2021-11-20 05:31:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:31:58,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:31:58,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:31:58,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:31:58,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-20 05:31:58,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:31:58,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:31:58,490 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2021-11-20 05:31:58,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:31:58,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129378354] [2021-11-20 05:31:58,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:31:58,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:31:58,513 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:31:58,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143441529] [2021-11-20 05:31:58,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:31:58,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:31:58,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:31:58,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:31:58,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:31:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:31:58,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:31:58,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:31:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:31:58,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:31:58,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:31:58,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129378354] [2021-11-20 05:31:58,969 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:31:58,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143441529] [2021-11-20 05:31:58,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143441529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:31:58,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:31:58,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:31:58,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146646947] [2021-11-20 05:31:58,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:31:58,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:31:58,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:31:58,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:31:58,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:31:58,972 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:31:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:31:59,050 INFO L93 Difference]: Finished difference Result 495 states and 653 transitions. [2021-11-20 05:31:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:31:59,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-20 05:31:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:31:59,053 INFO L225 Difference]: With dead ends: 495 [2021-11-20 05:31:59,054 INFO L226 Difference]: Without dead ends: 261 [2021-11-20 05:31:59,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:31:59,056 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:31:59,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:31:59,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-20 05:31:59,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-11-20 05:31:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 237 states have (on average 1.2742616033755274) internal successors, (302), 251 states have internal predecessors, (302), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:31:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2021-11-20 05:31:59,072 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 103 [2021-11-20 05:31:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:31:59,072 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2021-11-20 05:31:59,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:31:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2021-11-20 05:31:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:31:59,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:31:59,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:31:59,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:31:59,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:31:59,293 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:31:59,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:31:59,294 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2021-11-20 05:31:59,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:31:59,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312284591] [2021-11-20 05:31:59,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:31:59,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:31:59,324 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:31:59,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547872375] [2021-11-20 05:31:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:31:59,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:31:59,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:31:59,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:31:59,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:31:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:31:59,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:31:59,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:31:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:31:59,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:31:59,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:31:59,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312284591] [2021-11-20 05:31:59,789 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:31:59,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547872375] [2021-11-20 05:31:59,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547872375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:31:59,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:31:59,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:31:59,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020552661] [2021-11-20 05:31:59,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:31:59,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:31:59,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:31:59,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:31:59,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:31:59,794 INFO L87 Difference]: Start difference. First operand 260 states and 334 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:31:59,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:31:59,879 INFO L93 Difference]: Finished difference Result 505 states and 653 transitions. [2021-11-20 05:31:59,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:31:59,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-20 05:31:59,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:31:59,884 INFO L225 Difference]: With dead ends: 505 [2021-11-20 05:31:59,884 INFO L226 Difference]: Without dead ends: 251 [2021-11-20 05:31:59,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:31:59,889 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 239 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:31:59,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 562 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:31:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-20 05:31:59,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2021-11-20 05:31:59,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 237 states have internal predecessors, (281), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:31:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2021-11-20 05:31:59,917 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 103 [2021-11-20 05:31:59,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:31:59,919 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2021-11-20 05:31:59,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:31:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2021-11-20 05:31:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:31:59,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:31:59,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:31:59,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:00,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:00,133 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:00,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:00,134 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2021-11-20 05:32:00,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:00,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281164927] [2021-11-20 05:32:00,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:00,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:00,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:00,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728156758] [2021-11-20 05:32:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:00,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:00,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:00,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:00,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:32:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:00,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:32:00,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:00,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:00,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:00,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281164927] [2021-11-20 05:32:00,574 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:00,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728156758] [2021-11-20 05:32:00,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728156758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:00,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:00,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:32:00,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896436367] [2021-11-20 05:32:00,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:00,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:32:00,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:00,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:32:00,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:32:00,577 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:00,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:00,665 INFO L93 Difference]: Finished difference Result 566 states and 720 transitions. [2021-11-20 05:32:00,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:32:00,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-20 05:32:00,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:00,668 INFO L225 Difference]: With dead ends: 566 [2021-11-20 05:32:00,668 INFO L226 Difference]: Without dead ends: 326 [2021-11-20 05:32:00,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:00,670 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 232 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:00,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 857 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:32:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-20 05:32:00,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 232. [2021-11-20 05:32:00,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 209 states have (on average 1.244019138755981) internal successors, (260), 223 states have internal predecessors, (260), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:32:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 292 transitions. [2021-11-20 05:32:00,684 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 292 transitions. Word has length 103 [2021-11-20 05:32:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:00,684 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 292 transitions. [2021-11-20 05:32:00,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:00,685 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 292 transitions. [2021-11-20 05:32:00,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:32:00,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:00,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:00,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:00,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:00,899 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2021-11-20 05:32:00,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:00,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847360664] [2021-11-20 05:32:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:00,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:00,930 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:00,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37998938] [2021-11-20 05:32:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:00,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:00,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:00,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:00,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:32:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:01,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:32:01,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:01,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:01,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:01,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847360664] [2021-11-20 05:32:01,444 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:01,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37998938] [2021-11-20 05:32:01,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37998938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:01,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:01,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:32:01,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789230421] [2021-11-20 05:32:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:01,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:32:01,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:32:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:32:01,446 INFO L87 Difference]: Start difference. First operand 232 states and 292 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:01,507 INFO L93 Difference]: Finished difference Result 416 states and 516 transitions. [2021-11-20 05:32:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:32:01,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-20 05:32:01,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:01,511 INFO L225 Difference]: With dead ends: 416 [2021-11-20 05:32:01,511 INFO L226 Difference]: Without dead ends: 415 [2021-11-20 05:32:01,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:01,512 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 105 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:01,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 936 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:32:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-20 05:32:01,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 413. [2021-11-20 05:32:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 384 states have (on average 1.2213541666666667) internal successors, (469), 398 states have internal predecessors, (469), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:32:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 513 transitions. [2021-11-20 05:32:01,532 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 513 transitions. Word has length 103 [2021-11-20 05:32:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:01,533 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 513 transitions. [2021-11-20 05:32:01,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 513 transitions. [2021-11-20 05:32:01,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-20 05:32:01,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:01,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:01,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:01,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:01,749 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:01,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2021-11-20 05:32:01,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:01,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772718848] [2021-11-20 05:32:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:01,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:01,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:01,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070485558] [2021-11-20 05:32:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:01,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:01,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:01,768 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:01,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:32:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:01,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:32:01,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:02,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:02,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:02,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772718848] [2021-11-20 05:32:02,256 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:02,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070485558] [2021-11-20 05:32:02,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070485558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:02,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:02,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:32:02,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16990932] [2021-11-20 05:32:02,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:02,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:32:02,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:02,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:32:02,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:32:02,259 INFO L87 Difference]: Start difference. First operand 413 states and 513 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:02,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:02,297 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2021-11-20 05:32:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:32:02,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-20 05:32:02,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:02,301 INFO L225 Difference]: With dead ends: 413 [2021-11-20 05:32:02,301 INFO L226 Difference]: Without dead ends: 412 [2021-11-20 05:32:02,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:02,302 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 135 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:02,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 553 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:32:02,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-20 05:32:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-11-20 05:32:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 384 states have (on average 1.21875) internal successors, (468), 397 states have internal predecessors, (468), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:32:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 512 transitions. [2021-11-20 05:32:02,323 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 512 transitions. Word has length 104 [2021-11-20 05:32:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:02,323 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 512 transitions. [2021-11-20 05:32:02,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 512 transitions. [2021-11-20 05:32:02,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-20 05:32:02,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:02,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:02,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:02,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:02,541 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:02,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:02,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1365413568, now seen corresponding path program 1 times [2021-11-20 05:32:02,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:02,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354761950] [2021-11-20 05:32:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:02,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:02,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:02,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097128036] [2021-11-20 05:32:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:02,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:02,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:02,560 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:02,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 05:32:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:02,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:32:02,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:03,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:03,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:03,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354761950] [2021-11-20 05:32:03,452 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:03,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097128036] [2021-11-20 05:32:03,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097128036] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:32:03,453 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:32:03,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-20 05:32:03,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119745929] [2021-11-20 05:32:03,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:32:03,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:32:03,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:03,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:32:03,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:32:03,455 INFO L87 Difference]: Start difference. First operand 412 states and 512 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:03,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:03,631 INFO L93 Difference]: Finished difference Result 634 states and 796 transitions. [2021-11-20 05:32:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:32:03,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 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 108 [2021-11-20 05:32:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:03,637 INFO L225 Difference]: With dead ends: 634 [2021-11-20 05:32:03,637 INFO L226 Difference]: Without dead ends: 600 [2021-11-20 05:32:03,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:32:03,640 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 647 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:03,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1523 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:32:03,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-11-20 05:32:03,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-11-20 05:32:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 566 states have (on average 1.2102473498233215) internal successors, (685), 579 states have internal predecessors, (685), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-20 05:32:03,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 741 transitions. [2021-11-20 05:32:03,667 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 741 transitions. Word has length 108 [2021-11-20 05:32:03,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:03,667 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 741 transitions. [2021-11-20 05:32:03,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 741 transitions. [2021-11-20 05:32:03,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-20 05:32:03,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:03,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:03,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:03,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:03,894 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:03,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:03,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2021-11-20 05:32:03,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:03,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818759940] [2021-11-20 05:32:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:03,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:03,925 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:03,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011527301] [2021-11-20 05:32:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:03,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:03,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:03,927 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:03,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 05:32:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:04,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:32:04,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:32:04,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:04,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:04,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818759940] [2021-11-20 05:32:04,666 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:04,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011527301] [2021-11-20 05:32:04,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011527301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:04,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:04,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:32:04,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256524392] [2021-11-20 05:32:04,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:04,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:32:04,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:04,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:32:04,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:32:04,674 INFO L87 Difference]: Start difference. First operand 600 states and 741 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:04,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:04,763 INFO L93 Difference]: Finished difference Result 1051 states and 1305 transitions. [2021-11-20 05:32:04,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:32:04,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-20 05:32:04,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:04,768 INFO L225 Difference]: With dead ends: 1051 [2021-11-20 05:32:04,768 INFO L226 Difference]: Without dead ends: 598 [2021-11-20 05:32:04,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:32:04,771 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 65 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 536 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 [2021-11-20 05:32:04,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 536 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:32:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-20 05:32:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-11-20 05:32:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 577 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-20 05:32:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 738 transitions. [2021-11-20 05:32:04,802 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 738 transitions. Word has length 108 [2021-11-20 05:32:04,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:04,803 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 738 transitions. [2021-11-20 05:32:04,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:32:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 738 transitions. [2021-11-20 05:32:04,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 05:32:04,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:04,806 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:04,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:05,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:05,033 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:05,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:05,033 INFO L85 PathProgramCache]: Analyzing trace with hash -353330685, now seen corresponding path program 1 times [2021-11-20 05:32:05,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:05,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890760665] [2021-11-20 05:32:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:05,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:05,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:05,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800065972] [2021-11-20 05:32:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:05,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:05,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:05,063 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:05,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 05:32:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:05,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:32:05,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:32:05,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:05,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:05,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890760665] [2021-11-20 05:32:05,617 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:05,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800065972] [2021-11-20 05:32:05,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800065972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:05,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:05,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:32:05,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726973701] [2021-11-20 05:32:05,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:05,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:32:05,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:05,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:32:05,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:32:05,620 INFO L87 Difference]: Start difference. First operand 598 states and 738 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:32:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:05,705 INFO L93 Difference]: Finished difference Result 1136 states and 1408 transitions. [2021-11-20 05:32:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:32:05,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 123 [2021-11-20 05:32:05,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:05,712 INFO L225 Difference]: With dead ends: 1136 [2021-11-20 05:32:05,713 INFO L226 Difference]: Without dead ends: 596 [2021-11-20 05:32:05,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:32:05,715 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 15 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:05,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 534 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:32:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-20 05:32:05,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-11-20 05:32:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 562 states have (on average 1.208185053380783) internal successors, (679), 575 states have internal predecessors, (679), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-20 05:32:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 735 transitions. [2021-11-20 05:32:05,739 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 735 transitions. Word has length 123 [2021-11-20 05:32:05,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:05,740 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 735 transitions. [2021-11-20 05:32:05,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:32:05,740 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 735 transitions. [2021-11-20 05:32:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-20 05:32:05,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:05,742 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:05,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:05,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 05:32:05,957 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash 623227202, now seen corresponding path program 1 times [2021-11-20 05:32:05,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:05,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383913004] [2021-11-20 05:32:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:05,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:05,989 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:05,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974597890] [2021-11-20 05:32:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:05,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:05,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:05,993 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:05,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-20 05:32:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:06,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:32:06,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 05:32:06,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:06,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:06,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383913004] [2021-11-20 05:32:06,721 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:06,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974597890] [2021-11-20 05:32:06,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974597890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:06,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:06,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:32:06,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103838468] [2021-11-20 05:32:06,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:06,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:32:06,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:06,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:32:06,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:32:06,723 INFO L87 Difference]: Start difference. First operand 596 states and 735 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:32:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:06,791 INFO L93 Difference]: Finished difference Result 1143 states and 1433 transitions. [2021-11-20 05:32:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:32:06,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2021-11-20 05:32:06,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:06,797 INFO L225 Difference]: With dead ends: 1143 [2021-11-20 05:32:06,797 INFO L226 Difference]: Without dead ends: 599 [2021-11-20 05:32:06,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:06,799 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 2 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:06,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 806 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:32:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-20 05:32:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-11-20 05:32:06,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 578 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-20 05:32:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2021-11-20 05:32:06,828 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 138 [2021-11-20 05:32:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:06,828 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2021-11-20 05:32:06,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:32:06,829 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2021-11-20 05:32:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-20 05:32:06,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:06,831 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:06,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:07,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 05:32:07,045 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:07,046 INFO L85 PathProgramCache]: Analyzing trace with hash -268398914, now seen corresponding path program 1 times [2021-11-20 05:32:07,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:07,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622273238] [2021-11-20 05:32:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:07,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:07,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:07,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595649068] [2021-11-20 05:32:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:07,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:07,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:07,066 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:07,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-20 05:32:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:07,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:32:07,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-20 05:32:07,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-20 05:32:08,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:08,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622273238] [2021-11-20 05:32:08,177 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:08,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595649068] [2021-11-20 05:32:08,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595649068] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:32:08,178 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:32:08,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-20 05:32:08,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671607249] [2021-11-20 05:32:08,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:32:08,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:32:08,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:08,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:32:08,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:32:08,180 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:32:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:08,379 INFO L93 Difference]: Finished difference Result 1157 states and 1469 transitions. [2021-11-20 05:32:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:32:08,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 142 [2021-11-20 05:32:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:08,384 INFO L225 Difference]: With dead ends: 1157 [2021-11-20 05:32:08,384 INFO L226 Difference]: Without dead ends: 610 [2021-11-20 05:32:08,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:32:08,389 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 16 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:08,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1333 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:32:08,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-11-20 05:32:08,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2021-11-20 05:32:08,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2167832167832169) internal successors, (696), 586 states have internal predecessors, (696), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-20 05:32:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 758 transitions. [2021-11-20 05:32:08,436 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 758 transitions. Word has length 142 [2021-11-20 05:32:08,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:08,437 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 758 transitions. [2021-11-20 05:32:08,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:32:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 758 transitions. [2021-11-20 05:32:08,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-20 05:32:08,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:08,440 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:08,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:08,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:08,657 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:08,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:08,658 INFO L85 PathProgramCache]: Analyzing trace with hash -841779454, now seen corresponding path program 2 times [2021-11-20 05:32:08,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:08,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797945569] [2021-11-20 05:32:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:08,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:08,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:08,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012713362] [2021-11-20 05:32:08,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:32:08,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:08,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:08,674 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:08,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-20 05:32:09,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:32:09,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:32:09,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 05:32:09,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 84 proven. 25 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-20 05:32:09,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-20 05:32:09,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:09,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797945569] [2021-11-20 05:32:09,934 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:09,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012713362] [2021-11-20 05:32:09,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012713362] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:32:09,934 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:32:09,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2021-11-20 05:32:09,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071664088] [2021-11-20 05:32:09,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:32:09,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 05:32:09,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:09,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 05:32:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:32:09,936 INFO L87 Difference]: Start difference. First operand 608 states and 758 transitions. Second operand has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 05:32:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:10,565 INFO L93 Difference]: Finished difference Result 1216 states and 1577 transitions. [2021-11-20 05:32:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 05:32:10,566 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 150 [2021-11-20 05:32:10,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:10,570 INFO L225 Difference]: With dead ends: 1216 [2021-11-20 05:32:10,570 INFO L226 Difference]: Without dead ends: 614 [2021-11-20 05:32:10,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:32:10,573 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 268 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:10,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 2099 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:32:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-20 05:32:10,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 605. [2021-11-20 05:32:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 569 states have (on average 1.2161687170474518) internal successors, (692), 583 states have internal predecessors, (692), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-20 05:32:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 754 transitions. [2021-11-20 05:32:10,604 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 754 transitions. Word has length 150 [2021-11-20 05:32:10,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:10,605 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 754 transitions. [2021-11-20 05:32:10,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 05:32:10,605 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 754 transitions. [2021-11-20 05:32:10,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-20 05:32:10,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:10,608 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:10,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:10,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:10,829 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:10,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:10,829 INFO L85 PathProgramCache]: Analyzing trace with hash -191480894, now seen corresponding path program 3 times [2021-11-20 05:32:10,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:10,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553602655] [2021-11-20 05:32:10,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:10,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:10,845 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:10,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323990088] [2021-11-20 05:32:10,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:32:10,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:10,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:10,848 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:10,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-20 05:32:11,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 05:32:11,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:32:11,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:32:11,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:32:11,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:11,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:11,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553602655] [2021-11-20 05:32:11,455 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:11,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323990088] [2021-11-20 05:32:11,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323990088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:11,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:11,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:32:11,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634090141] [2021-11-20 05:32:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:11,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:32:11,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:32:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:32:11,458 INFO L87 Difference]: Start difference. First operand 605 states and 754 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:32:11,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:11,563 INFO L93 Difference]: Finished difference Result 605 states and 754 transitions. [2021-11-20 05:32:11,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:32:11,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 162 [2021-11-20 05:32:11,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:11,568 INFO L225 Difference]: With dead ends: 605 [2021-11-20 05:32:11,568 INFO L226 Difference]: Without dead ends: 604 [2021-11-20 05:32:11,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:32:11,570 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 506 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:11,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 1131 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:32:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-11-20 05:32:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2021-11-20 05:32:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 569 states have (on average 1.2126537785588751) internal successors, (690), 582 states have internal predecessors, (690), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-20 05:32:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 752 transitions. [2021-11-20 05:32:11,597 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 752 transitions. Word has length 162 [2021-11-20 05:32:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:11,598 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 752 transitions. [2021-11-20 05:32:11,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:32:11,598 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 752 transitions. [2021-11-20 05:32:11,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-11-20 05:32:11,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:11,606 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:11,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-20 05:32:11,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 05:32:11,825 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:11,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:11,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1864666512, now seen corresponding path program 1 times [2021-11-20 05:32:11,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:11,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581459081] [2021-11-20 05:32:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:11,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:11,851 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:11,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069655512] [2021-11-20 05:32:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:11,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:11,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:11,853 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:11,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-20 05:32:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:12,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:32:12,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:32:13,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:32:14,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:14,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581459081] [2021-11-20 05:32:14,322 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:14,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069655512] [2021-11-20 05:32:14,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069655512] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:32:14,323 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:32:14,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-20 05:32:14,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978664500] [2021-11-20 05:32:14,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:32:14,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:32:14,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:14,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:32:14,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:32:14,327 INFO L87 Difference]: Start difference. First operand 604 states and 752 transitions. Second operand has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:32:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:14,556 INFO L93 Difference]: Finished difference Result 816 states and 1027 transitions. [2021-11-20 05:32:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:32:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 361 [2021-11-20 05:32:14,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:14,564 INFO L225 Difference]: With dead ends: 816 [2021-11-20 05:32:14,565 INFO L226 Difference]: Without dead ends: 815 [2021-11-20 05:32:14,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:32:14,569 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 776 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:14,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 1312 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:32:14,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-11-20 05:32:14,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 603. [2021-11-20 05:32:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 569 states have (on average 1.210896309314587) internal successors, (689), 581 states have internal predecessors, (689), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-11-20 05:32:14,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 751 transitions. [2021-11-20 05:32:14,614 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 751 transitions. Word has length 361 [2021-11-20 05:32:14,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:14,615 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 751 transitions. [2021-11-20 05:32:14,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:32:14,616 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 751 transitions. [2021-11-20 05:32:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-20 05:32:14,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:14,625 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:14,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:14,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 05:32:14,849 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:14,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:14,850 INFO L85 PathProgramCache]: Analyzing trace with hash 581056994, now seen corresponding path program 1 times [2021-11-20 05:32:14,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:14,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215227245] [2021-11-20 05:32:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:14,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:14,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:14,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612510425] [2021-11-20 05:32:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:14,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:14,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:14,890 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:14,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-20 05:32:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:15,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:32:15,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:32:16,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:32:17,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:17,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215227245] [2021-11-20 05:32:17,125 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:17,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612510425] [2021-11-20 05:32:17,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612510425] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:32:17,125 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:32:17,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-20 05:32:17,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829221379] [2021-11-20 05:32:17,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:32:17,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 05:32:17,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:17,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 05:32:17,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:32:17,130 INFO L87 Difference]: Start difference. First operand 603 states and 751 transitions. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:32:17,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:17,474 INFO L93 Difference]: Finished difference Result 1368 states and 1703 transitions. [2021-11-20 05:32:17,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:32:17,475 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 366 [2021-11-20 05:32:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:17,486 INFO L225 Difference]: With dead ends: 1368 [2021-11-20 05:32:17,486 INFO L226 Difference]: Without dead ends: 1335 [2021-11-20 05:32:17,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-11-20 05:32:17,488 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1877 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:17,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 2235 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:32:17,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-11-20 05:32:17,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1335. [2021-11-20 05:32:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1277 states have (on average 1.197337509788567) internal successors, (1529), 1289 states have internal predecessors, (1529), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-11-20 05:32:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1647 transitions. [2021-11-20 05:32:17,568 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1647 transitions. Word has length 366 [2021-11-20 05:32:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:17,569 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 1647 transitions. [2021-11-20 05:32:17,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:32:17,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1647 transitions. [2021-11-20 05:32:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2021-11-20 05:32:17,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:17,580 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:17,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-20 05:32:17,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 05:32:17,800 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1232682362, now seen corresponding path program 2 times [2021-11-20 05:32:17,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:17,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660200293] [2021-11-20 05:32:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:17,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:17,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:17,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668305652] [2021-11-20 05:32:17,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:32:17,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:17,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:17,845 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:17,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-20 05:32:18,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 05:32:18,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:32:18,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:32:18,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:20,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2021-11-20 05:32:20,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:20,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:20,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660200293] [2021-11-20 05:32:20,143 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:20,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668305652] [2021-11-20 05:32:20,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668305652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:20,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:20,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:32:20,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541519110] [2021-11-20 05:32:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:20,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:32:20,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:20,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:32:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:32:20,147 INFO L87 Difference]: Start difference. First operand 1335 states and 1647 transitions. Second operand has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:32:20,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:20,216 INFO L93 Difference]: Finished difference Result 1361 states and 1693 transitions. [2021-11-20 05:32:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:32:20,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 774 [2021-11-20 05:32:20,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:20,227 INFO L225 Difference]: With dead ends: 1361 [2021-11-20 05:32:20,227 INFO L226 Difference]: Without dead ends: 1360 [2021-11-20 05:32:20,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:20,229 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 109 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:20,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 570 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:32:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2021-11-20 05:32:20,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1337. [2021-11-20 05:32:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1279 states have (on average 1.1970289288506646) internal successors, (1531), 1291 states have internal predecessors, (1531), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-11-20 05:32:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1649 transitions. [2021-11-20 05:32:20,289 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1649 transitions. Word has length 774 [2021-11-20 05:32:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:20,291 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 1649 transitions. [2021-11-20 05:32:20,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:32:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1649 transitions. [2021-11-20 05:32:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2021-11-20 05:32:20,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:20,302 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:20,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:20,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 05:32:20,517 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:20,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash 441553223, now seen corresponding path program 1 times [2021-11-20 05:32:20,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:20,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480991628] [2021-11-20 05:32:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:20,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:20,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:20,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032443331] [2021-11-20 05:32:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:20,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:20,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:20,580 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:20,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-20 05:32:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:21,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 2159 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 05:32:21,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:32:22,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-20 05:32:24,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:24,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480991628] [2021-11-20 05:32:24,573 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:24,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032443331] [2021-11-20 05:32:24,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032443331] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:32:24,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:32:24,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-11-20 05:32:24,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831825461] [2021-11-20 05:32:24,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:32:24,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 05:32:24,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 05:32:24,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-20 05:32:24,607 INFO L87 Difference]: Start difference. First operand 1337 states and 1649 transitions. Second operand has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:32:25,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:25,059 INFO L93 Difference]: Finished difference Result 1921 states and 2378 transitions. [2021-11-20 05:32:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 05:32:25,060 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 775 [2021-11-20 05:32:25,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:25,073 INFO L225 Difference]: With dead ends: 1921 [2021-11-20 05:32:25,073 INFO L226 Difference]: Without dead ends: 1886 [2021-11-20 05:32:25,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1528 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-11-20 05:32:25,076 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 2443 mSDsluCounter, 3298 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2495 SdHoareTripleChecker+Valid, 3672 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:25,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2495 Valid, 3672 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:32:25,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-11-20 05:32:25,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1886. [2021-11-20 05:32:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1810 states have (on average 1.1939226519337016) internal successors, (2161), 1822 states have internal predecessors, (2161), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-11-20 05:32:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2321 transitions. [2021-11-20 05:32:25,155 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2321 transitions. Word has length 775 [2021-11-20 05:32:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:25,156 INFO L470 AbstractCegarLoop]: Abstraction has 1886 states and 2321 transitions. [2021-11-20 05:32:25,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 05:32:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2321 transitions. [2021-11-20 05:32:25,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2021-11-20 05:32:25,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:25,175 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:25,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:25,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 05:32:25,389 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:25,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1963705612, now seen corresponding path program 2 times [2021-11-20 05:32:25,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:25,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401503637] [2021-11-20 05:32:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:25,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:25,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:25,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751570059] [2021-11-20 05:32:25,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:32:25,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:25,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:25,447 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:25,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-20 05:32:25,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 05:32:25,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:32:25,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:32:25,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:32:28,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:28,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:28,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401503637] [2021-11-20 05:32:28,313 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:28,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751570059] [2021-11-20 05:32:28,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751570059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:28,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:28,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:32:28,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944585828] [2021-11-20 05:32:28,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:28,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:32:28,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:28,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:32:28,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:32:28,316 INFO L87 Difference]: Start difference. First operand 1886 states and 2321 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:32:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:28,421 INFO L93 Difference]: Finished difference Result 1886 states and 2321 transitions. [2021-11-20 05:32:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:32:28,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1081 [2021-11-20 05:32:28,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:28,437 INFO L225 Difference]: With dead ends: 1886 [2021-11-20 05:32:28,438 INFO L226 Difference]: Without dead ends: 1885 [2021-11-20 05:32:28,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:28,440 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:28,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 478 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:32:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2021-11-20 05:32:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1885. [2021-11-20 05:32:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1810 states have (on average 1.1933701657458564) internal successors, (2160), 1821 states have internal predecessors, (2160), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-11-20 05:32:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2320 transitions. [2021-11-20 05:32:28,526 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2320 transitions. Word has length 1081 [2021-11-20 05:32:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:28,528 INFO L470 AbstractCegarLoop]: Abstraction has 1885 states and 2320 transitions. [2021-11-20 05:32:28,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:32:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2320 transitions. [2021-11-20 05:32:28,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2021-11-20 05:32:28,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:28,548 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:28,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:28,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:28,761 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:28,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1708047769, now seen corresponding path program 1 times [2021-11-20 05:32:28,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:28,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486166417] [2021-11-20 05:32:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:28,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:28,806 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:28,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1780360545] [2021-11-20 05:32:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:28,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:28,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:28,807 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:28,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 05:32:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:29,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:32:29,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:32:32,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:32:34,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:34,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486166417] [2021-11-20 05:32:34,392 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:34,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780360545] [2021-11-20 05:32:34,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780360545] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:32:34,393 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:32:34,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-11-20 05:32:34,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883881453] [2021-11-20 05:32:34,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:32:34,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:32:34,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:34,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:32:34,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:32:34,398 INFO L87 Difference]: Start difference. First operand 1885 states and 2320 transitions. Second operand has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 05:32:34,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:34,790 INFO L93 Difference]: Finished difference Result 1977 states and 2471 transitions. [2021-11-20 05:32:34,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:32:34,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1092 [2021-11-20 05:32:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:34,805 INFO L225 Difference]: With dead ends: 1977 [2021-11-20 05:32:34,806 INFO L226 Difference]: Without dead ends: 1976 [2021-11-20 05:32:34,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2189 GetRequests, 2174 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:32:34,808 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 652 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:34,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 1089 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:32:34,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-11-20 05:32:34,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1975. [2021-11-20 05:32:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1867 states have (on average 1.203535083020889) internal successors, (2247), 1908 states have internal predecessors, (2247), 100 states have call successors, (100), 6 states have call predecessors, (100), 7 states have return successors, (120), 64 states have call predecessors, (120), 100 states have call successors, (120) [2021-11-20 05:32:34,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2467 transitions. [2021-11-20 05:32:34,922 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2467 transitions. Word has length 1092 [2021-11-20 05:32:34,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:34,924 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 2467 transitions. [2021-11-20 05:32:34,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 05:32:34,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2467 transitions. [2021-11-20 05:32:34,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2021-11-20 05:32:34,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:34,944 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:34,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:35,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:35,160 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:35,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:35,161 INFO L85 PathProgramCache]: Analyzing trace with hash -412829695, now seen corresponding path program 2 times [2021-11-20 05:32:35,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:35,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341776618] [2021-11-20 05:32:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:35,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:35,217 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:35,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349909692] [2021-11-20 05:32:35,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:32:35,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:35,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:35,219 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:35,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-20 05:32:35,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:32:35,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:32:35,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 3052 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:32:35,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:32:38,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4984 trivial. 0 not checked. [2021-11-20 05:32:41,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:41,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341776618] [2021-11-20 05:32:41,191 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:41,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349909692] [2021-11-20 05:32:41,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349909692] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:32:41,192 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:32:41,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-11-20 05:32:41,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914230964] [2021-11-20 05:32:41,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:32:41,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 05:32:41,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 05:32:41,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-20 05:32:41,197 INFO L87 Difference]: Start difference. First operand 1975 states and 2467 transitions. Second operand has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-20 05:32:42,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:42,291 INFO L93 Difference]: Finished difference Result 2157 states and 2768 transitions. [2021-11-20 05:32:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-20 05:32:42,302 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 1128 [2021-11-20 05:32:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:42,318 INFO L225 Difference]: With dead ends: 2157 [2021-11-20 05:32:42,318 INFO L226 Difference]: Without dead ends: 2156 [2021-11-20 05:32:42,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2273 GetRequests, 2234 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 05:32:42,321 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1746 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:42,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1756 Valid, 1024 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 05:32:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-11-20 05:32:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2155. [2021-11-20 05:32:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1981 states have (on average 1.2221100454316003) internal successors, (2421), 2082 states have internal predecessors, (2421), 160 states have call successors, (160), 12 states have call predecessors, (160), 13 states have return successors, (180), 70 states have call predecessors, (180), 160 states have call successors, (180) [2021-11-20 05:32:42,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2761 transitions. [2021-11-20 05:32:42,423 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2761 transitions. Word has length 1128 [2021-11-20 05:32:42,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:42,426 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2761 transitions. [2021-11-20 05:32:42,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-20 05:32:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2761 transitions. [2021-11-20 05:32:42,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2021-11-20 05:32:42,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:42,484 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:42,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:42,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:42,701 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:42,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:42,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1412788433, now seen corresponding path program 3 times [2021-11-20 05:32:42,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:42,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101508797] [2021-11-20 05:32:42,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:42,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:42,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:42,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45315557] [2021-11-20 05:32:42,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:32:42,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:42,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:42,743 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:42,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-20 05:32:43,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 05:32:43,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:32:43,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:32:43,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5520 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2021-11-20 05:32:44,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:44,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:44,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101508797] [2021-11-20 05:32:44,661 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:44,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45315557] [2021-11-20 05:32:44,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45315557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:44,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:44,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:32:44,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347903570] [2021-11-20 05:32:44,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:44,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:32:44,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:44,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:32:44,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:32:44,665 INFO L87 Difference]: Start difference. First operand 2155 states and 2761 transitions. Second operand has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:32:44,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:44,872 INFO L93 Difference]: Finished difference Result 2472 states and 3248 transitions. [2021-11-20 05:32:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:32:44,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1200 [2021-11-20 05:32:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:44,889 INFO L225 Difference]: With dead ends: 2472 [2021-11-20 05:32:44,889 INFO L226 Difference]: Without dead ends: 2471 [2021-11-20 05:32:44,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:32:44,893 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 249 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:44,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 563 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:32:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-11-20 05:32:44,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2398. [2021-11-20 05:32:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2152 states have (on average 1.246282527881041) internal successors, (2682), 2307 states have internal predecessors, (2682), 223 states have call successors, (223), 21 states have call predecessors, (223), 22 states have return successors, (243), 79 states have call predecessors, (243), 223 states have call successors, (243) [2021-11-20 05:32:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3148 transitions. [2021-11-20 05:32:45,026 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3148 transitions. Word has length 1200 [2021-11-20 05:32:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:45,029 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 3148 transitions. [2021-11-20 05:32:45,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:32:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3148 transitions. [2021-11-20 05:32:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2021-11-20 05:32:45,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:45,051 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:45,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:45,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:45,273 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:45,273 INFO L85 PathProgramCache]: Analyzing trace with hash -54767608, now seen corresponding path program 1 times [2021-11-20 05:32:45,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:45,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469022600] [2021-11-20 05:32:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:45,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:45,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:45,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693747261] [2021-11-20 05:32:45,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:45,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:45,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:45,328 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:45,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-20 05:32:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:46,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 3270 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 05:32:46,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:48,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:32:48,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:32:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 5140 trivial. 0 not checked. [2021-11-20 05:32:51,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:51,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469022600] [2021-11-20 05:32:51,689 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:51,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693747261] [2021-11-20 05:32:51,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693747261] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:32:51,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:32:51,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-11-20 05:32:51,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506457160] [2021-11-20 05:32:51,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:32:51,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 05:32:51,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:51,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 05:32:51,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-20 05:32:51,695 INFO L87 Difference]: Start difference. First operand 2398 states and 3148 transitions. Second operand has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-11-20 05:32:55,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:55,025 INFO L93 Difference]: Finished difference Result 3115 states and 4316 transitions. [2021-11-20 05:32:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-20 05:32:55,026 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 1201 [2021-11-20 05:32:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:55,048 INFO L225 Difference]: With dead ends: 3115 [2021-11-20 05:32:55,048 INFO L226 Difference]: Without dead ends: 3114 [2021-11-20 05:32:55,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2443 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-11-20 05:32:55,053 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 4137 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 1893 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4147 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1893 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:55,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4147 Valid, 1615 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1893 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 05:32:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-11-20 05:32:55,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 3094. [2021-11-20 05:32:55,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 2608 states have (on average 1.2952453987730062) internal successors, (3378), 2967 states have internal predecessors, (3378), 439 states have call successors, (439), 45 states have call predecessors, (439), 46 states have return successors, (459), 103 states have call predecessors, (459), 439 states have call successors, (459) [2021-11-20 05:32:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 4276 transitions. [2021-11-20 05:32:55,220 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 4276 transitions. Word has length 1201 [2021-11-20 05:32:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:55,226 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 4276 transitions. [2021-11-20 05:32:55,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-11-20 05:32:55,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 4276 transitions. [2021-11-20 05:32:55,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2021-11-20 05:32:55,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:55,281 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:55,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:55,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-20 05:32:55,501 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:32:55,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:55,502 INFO L85 PathProgramCache]: Analyzing trace with hash 432013928, now seen corresponding path program 2 times [2021-11-20 05:32:55,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:55,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915908997] [2021-11-20 05:32:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:55,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:55,560 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:55,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134692923] [2021-11-20 05:32:55,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:32:55,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:55,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:55,562 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:55,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-20 05:32:56,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:32:56,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:32:56,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 3702 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-20 05:32:56,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:33:00,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 5884 trivial. 0 not checked. [2021-11-20 05:33:04,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:04,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915908997] [2021-11-20 05:33:04,207 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:33:04,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134692923] [2021-11-20 05:33:04,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134692923] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:04,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:33:04,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2021-11-20 05:33:04,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308698008] [2021-11-20 05:33:04,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:04,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-20 05:33:04,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:04,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-20 05:33:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-20 05:33:04,215 INFO L87 Difference]: Start difference. First operand 3094 states and 4276 transitions. Second operand has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-11-20 05:33:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:13,197 INFO L93 Difference]: Finished difference Result 4507 states and 6584 transitions. [2021-11-20 05:33:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-11-20 05:33:13,198 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) Word has length 1345 [2021-11-20 05:33:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:13,229 INFO L225 Difference]: With dead ends: 4507 [2021-11-20 05:33:13,230 INFO L226 Difference]: Without dead ends: 4506 [2021-11-20 05:33:13,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2779 GetRequests, 2596 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-11-20 05:33:13,244 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 7757 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 4988 mSolverCounterSat, 4009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7767 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 8997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4009 IncrementalHoareTripleChecker+Valid, 4988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:13,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7767 Valid, 2087 Invalid, 8997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4009 Valid, 4988 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-20 05:33:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-11-20 05:33:13,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4486. [2021-11-20 05:33:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 3520 states have (on average 1.3551136363636365) internal successors, (4770), 4287 states have internal predecessors, (4770), 871 states have call successors, (871), 93 states have call predecessors, (871), 94 states have return successors, (891), 151 states have call predecessors, (891), 871 states have call successors, (891) [2021-11-20 05:33:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 6532 transitions. [2021-11-20 05:33:13,563 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 6532 transitions. Word has length 1345 [2021-11-20 05:33:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:13,565 INFO L470 AbstractCegarLoop]: Abstraction has 4486 states and 6532 transitions. [2021-11-20 05:33:13,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-11-20 05:33:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 6532 transitions. [2021-11-20 05:33:13,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1634 [2021-11-20 05:33:13,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:13,606 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:13,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:13,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-20 05:33:13,829 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:33:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash -85776600, now seen corresponding path program 3 times [2021-11-20 05:33:13,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:13,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231268795] [2021-11-20 05:33:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:13,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:13,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:33:13,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343822292] [2021-11-20 05:33:13,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:33:13,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:13,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:13,894 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:13,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-20 05:33:14,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 05:33:14,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:33:14,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:33:14,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 17427 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 16975 trivial. 0 not checked. [2021-11-20 05:33:16,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:33:16,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:16,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231268795] [2021-11-20 05:33:16,465 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:33:16,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343822292] [2021-11-20 05:33:16,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343822292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:33:16,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:33:16,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:33:16,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063105882] [2021-11-20 05:33:16,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:33:16,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:33:16,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:16,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:33:16,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:33:16,468 INFO L87 Difference]: Start difference. First operand 4486 states and 6532 transitions. Second operand has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:33:16,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:33:16,941 INFO L93 Difference]: Finished difference Result 7361 states and 11018 transitions. [2021-11-20 05:33:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:33:16,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1633 [2021-11-20 05:33:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:33:16,982 INFO L225 Difference]: With dead ends: 7361 [2021-11-20 05:33:16,982 INFO L226 Difference]: Without dead ends: 7360 [2021-11-20 05:33:16,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1632 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:33:16,987 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 282 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:33:16,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 716 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:33:16,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2021-11-20 05:33:17,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 6897. [2021-11-20 05:33:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6897 states, 5227 states have (on average 1.411325808303042) internal successors, (7377), 6519 states have internal predecessors, (7377), 1486 states have call successors, (1486), 182 states have call predecessors, (1486), 183 states have return successors, (1506), 240 states have call predecessors, (1506), 1486 states have call successors, (1506) [2021-11-20 05:33:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6897 states to 6897 states and 10369 transitions. [2021-11-20 05:33:17,498 INFO L78 Accepts]: Start accepts. Automaton has 6897 states and 10369 transitions. Word has length 1633 [2021-11-20 05:33:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:33:17,503 INFO L470 AbstractCegarLoop]: Abstraction has 6897 states and 10369 transitions. [2021-11-20 05:33:17,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-20 05:33:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 6897 states and 10369 transitions. [2021-11-20 05:33:17,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2021-11-20 05:33:17,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:33:17,557 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:33:17,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-20 05:33:17,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-20 05:33:17,785 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:33:17,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:33:17,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1486421430, now seen corresponding path program 1 times [2021-11-20 05:33:17,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:33:17,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309670238] [2021-11-20 05:33:17,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:17,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:33:17,825 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:33:17,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394365575] [2021-11-20 05:33:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:33:17,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:33:17,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:33:17,834 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:33:17,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-20 05:33:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:33:18,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 4570 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-20 05:33:18,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:33:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:33:24,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:33:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 9100 trivial. 0 not checked. [2021-11-20 05:33:33,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:33:33,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309670238] [2021-11-20 05:33:33,744 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:33:33,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394365575] [2021-11-20 05:33:33,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394365575] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:33:33,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:33:33,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2021-11-20 05:33:33,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991507173] [2021-11-20 05:33:33,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:33:33,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-20 05:33:33,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:33:33,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-20 05:33:33,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-11-20 05:33:33,759 INFO L87 Difference]: Start difference. First operand 6897 states and 10369 transitions. Second operand has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-11-20 05:34:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:34:11,813 INFO L93 Difference]: Finished difference Result 12329 states and 19133 transitions. [2021-11-20 05:34:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-11-20 05:34:11,814 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) Word has length 1635 [2021-11-20 05:34:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:34:11,863 INFO L225 Difference]: With dead ends: 12329 [2021-11-20 05:34:11,864 INFO L226 Difference]: Without dead ends: 12328 [2021-11-20 05:34:11,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3455 GetRequests, 3080 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-11-20 05:34:11,885 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 20264 mSDsluCounter, 4529 mSDsCounter, 0 mSdLazyCounter, 11242 mSolverCounterSat, 11996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20274 SdHoareTripleChecker+Valid, 4785 SdHoareTripleChecker+Invalid, 23238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11996 IncrementalHoareTripleChecker+Valid, 11242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:34:11,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20274 Valid, 4785 Invalid, 23238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11996 Valid, 11242 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-11-20 05:34:11,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2021-11-20 05:34:12,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 12273. [2021-11-20 05:34:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12273 states, 8875 states have (on average 1.4585915492957746) internal successors, (12945), 11559 states have internal predecessors, (12945), 3022 states have call successors, (3022), 374 states have call predecessors, (3022), 375 states have return successors, (3042), 432 states have call predecessors, (3042), 3022 states have call successors, (3042) [2021-11-20 05:34:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12273 states to 12273 states and 19009 transitions. [2021-11-20 05:34:12,796 INFO L78 Accepts]: Start accepts. Automaton has 12273 states and 19009 transitions. Word has length 1635 [2021-11-20 05:34:12,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:34:12,798 INFO L470 AbstractCegarLoop]: Abstraction has 12273 states and 19009 transitions. [2021-11-20 05:34:12,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-11-20 05:34:12,799 INFO L276 IsEmpty]: Start isEmpty. Operand 12273 states and 19009 transitions. [2021-11-20 05:34:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2212 [2021-11-20 05:34:12,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:34:12,913 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:34:12,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-20 05:34:13,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:34:13,142 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:34:13,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:34:13,143 INFO L85 PathProgramCache]: Analyzing trace with hash -920525002, now seen corresponding path program 2 times [2021-11-20 05:34:13,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:34:13,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339450093] [2021-11-20 05:34:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:34:13,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:34:13,217 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:34:13,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139291146] [2021-11-20 05:34:13,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:34:13,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:34:13,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:34:13,219 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:34:13,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-20 05:34:14,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:34:14,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:34:14,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 6298 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-20 05:34:14,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:34:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:34:27,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:34:55,279 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 22444 trivial. 0 not checked. [2021-11-20 05:34:55,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:34:55,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339450093] [2021-11-20 05:34:55,280 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:34:55,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139291146] [2021-11-20 05:34:55,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139291146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:34:55,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:34:55,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2021-11-20 05:34:55,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266151761] [2021-11-20 05:34:55,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:34:55,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-20 05:34:55,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:34:55,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-20 05:34:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-11-20 05:34:55,311 INFO L87 Difference]: Start difference. First operand 12273 states and 19009 transitions. Second operand has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-11-20 05:40:33,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:33,232 INFO L93 Difference]: Finished difference Result 23081 states and 36461 transitions. [2021-11-20 05:40:33,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-11-20 05:40:33,234 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) Word has length 2211 [2021-11-20 05:40:33,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:33,363 INFO L225 Difference]: With dead ends: 23081 [2021-11-20 05:40:33,363 INFO L226 Difference]: Without dead ends: 23080 [2021-11-20 05:40:33,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4799 GetRequests, 4040 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 84.0s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-11-20 05:40:33,443 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 47297 mSDsluCounter, 6329 mSDsCounter, 0 mSdLazyCounter, 26328 mSolverCounterSat, 27934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47307 SdHoareTripleChecker+Valid, 6585 SdHoareTripleChecker+Invalid, 54262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 27934 IncrementalHoareTripleChecker+Valid, 26328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:33,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47307 Valid, 6585 Invalid, 54262 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [27934 Valid, 26328 Invalid, 0 Unknown, 0 Unchecked, 26.5s Time] [2021-11-20 05:40:33,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23080 states. [2021-11-20 05:40:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23080 to 23025. [2021-11-20 05:40:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23025 states, 16171 states have (on average 1.4891472388844227) internal successors, (24081), 21639 states have internal predecessors, (24081), 6094 states have call successors, (6094), 758 states have call predecessors, (6094), 759 states have return successors, (6114), 816 states have call predecessors, (6114), 6094 states have call successors, (6114) [2021-11-20 05:40:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23025 states to 23025 states and 36289 transitions. [2021-11-20 05:40:35,690 INFO L78 Accepts]: Start accepts. Automaton has 23025 states and 36289 transitions. Word has length 2211 [2021-11-20 05:40:35,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:35,694 INFO L470 AbstractCegarLoop]: Abstraction has 23025 states and 36289 transitions. [2021-11-20 05:40:35,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-11-20 05:40:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 23025 states and 36289 transitions. [2021-11-20 05:40:35,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3364 [2021-11-20 05:40:35,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:35,885 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:35,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-20 05:40:36,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:40:36,110 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:40:36,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:36,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1796228554, now seen corresponding path program 3 times [2021-11-20 05:40:36,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:40:36,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381443765] [2021-11-20 05:40:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:36,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:40:36,225 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:40:36,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833643955] [2021-11-20 05:40:36,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:40:36,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:40:36,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:40:36,228 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:40:36,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-20 05:40:36,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 05:40:36,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:40:36,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:40:36,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 220424 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 218531 trivial. 0 not checked. [2021-11-20 05:40:41,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:40:41,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:40:41,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381443765] [2021-11-20 05:40:41,784 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:40:41,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833643955] [2021-11-20 05:40:41,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833643955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:41,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:41,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:40:41,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111132946] [2021-11-20 05:40:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:41,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:40:41,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:40:41,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:40:41,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:40:41,788 INFO L87 Difference]: Start difference. First operand 23025 states and 36289 transitions. Second operand has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 05:40:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:44,691 INFO L93 Difference]: Finished difference Result 45979 states and 72022 transitions. [2021-11-20 05:40:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:40:44,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 3363 [2021-11-20 05:40:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:44,914 INFO L225 Difference]: With dead ends: 45979 [2021-11-20 05:40:44,915 INFO L226 Difference]: Without dead ends: 45978 [2021-11-20 05:40:44,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3371 GetRequests, 3362 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:40:44,943 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 282 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:44,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 713 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:40:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45978 states. [2021-11-20 05:40:47,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45978 to 37513. [2021-11-20 05:40:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37513 states, 26909 states have (on average 1.5039206213534506) internal successors, (40469), 34996 states have internal predecessors, (40469), 9278 states have call successors, (9278), 1324 states have call predecessors, (9278), 1325 states have return successors, (9298), 1381 states have call predecessors, (9298), 9278 states have call successors, (9298) [2021-11-20 05:40:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37513 states to 37513 states and 59045 transitions. [2021-11-20 05:40:48,001 INFO L78 Accepts]: Start accepts. Automaton has 37513 states and 59045 transitions. Word has length 3363 [2021-11-20 05:40:48,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:48,005 INFO L470 AbstractCegarLoop]: Abstraction has 37513 states and 59045 transitions. [2021-11-20 05:40:48,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 05:40:48,005 INFO L276 IsEmpty]: Start isEmpty. Operand 37513 states and 59045 transitions. [2021-11-20 05:40:48,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3365 [2021-11-20 05:40:48,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:48,303 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:48,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:48,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-20 05:40:48,529 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-20 05:40:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:48,531 INFO L85 PathProgramCache]: Analyzing trace with hash -626412579, now seen corresponding path program 1 times [2021-11-20 05:40:48,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:40:48,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546007705] [2021-11-20 05:40:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:48,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:40:48,642 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:40:48,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347132486] [2021-11-20 05:40:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:48,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:40:48,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:40:48,643 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:40:48,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a81e386e-0f3f-4c41-a116-1cbe2d2e42df/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-20 05:40:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:50,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 9757 conjuncts, 383 conjunts are in the unsatisfiable core [2021-11-20 05:40:50,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:41:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 219855 backedges. 0 proven. 214895 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-11-20 05:41:41,914 INFO L328 TraceCheckSpWp]: Computing backward predicates...