./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:24:16,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:24:16,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:24:16,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:24:16,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:24:16,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:24:16,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:24:16,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:24:16,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:24:16,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:24:16,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:24:16,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:24:16,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:24:16,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:24:16,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:24:16,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:24:16,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:24:16,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:24:16,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:24:16,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:24:16,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:24:16,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:24:16,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:24:16,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:24:16,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:24:16,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:24:16,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:24:16,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:24:16,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:24:16,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:24:16,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:24:16,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:24:16,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:24:16,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:24:16,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:24:16,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:24:16,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:24:16,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:24:16,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:24:16,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:24:16,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:24:16,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-02 20:24:16,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:24:16,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:24:16,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:24:16,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:24:16,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:24:16,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:24:16,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:24:16,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:24:16,289 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:24:16,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:24:16,290 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:24:16,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:24:16,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:24:16,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:24:16,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:24:16,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:24:16,291 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:24:16,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:24:16,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:24:16,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:24:16,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:24:16,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:24:16,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:24:16,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:16,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:24:16,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:24:16,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:24:16,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:24:16,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:24:16,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:24:16,299 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_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2022-11-02 20:24:16,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:24:16,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:24:16,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:24:16,641 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:24:16,642 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:24:16,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-11-02 20:24:16,735 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/data/c812ec2a3/0bf44ea80f1e4effbbd6db0f6495ed3e/FLAG8f1e47e95 [2022-11-02 20:24:17,280 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:24:17,281 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-11-02 20:24:17,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/data/c812ec2a3/0bf44ea80f1e4effbbd6db0f6495ed3e/FLAG8f1e47e95 [2022-11-02 20:24:17,651 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/data/c812ec2a3/0bf44ea80f1e4effbbd6db0f6495ed3e [2022-11-02 20:24:17,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:24:17,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:24:17,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:17,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:24:17,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:24:17,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48745ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17, skipping insertion in model container [2022-11-02 20:24:17,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:24:17,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:24:17,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:17,870 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:24:17,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:17,895 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:24:17,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17 WrapperNode [2022-11-02 20:24:17,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:17,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:17,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:24:17,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:24:17,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,927 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2022-11-02 20:24:17,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:17,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:24:17,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:24:17,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:24:17,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,945 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:24:17,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:24:17,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:24:17,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:24:17,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (1/1) ... [2022-11-02 20:24:17,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:17,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:17,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:24:17,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:24:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:24:18,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:24:18,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:24:18,114 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:24:18,274 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:24:18,280 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:24:18,281 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:24:18,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:18 BoogieIcfgContainer [2022-11-02 20:24:18,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:24:18,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:24:18,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:24:18,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:24:18,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:24:17" (1/3) ... [2022-11-02 20:24:18,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56630de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:18, skipping insertion in model container [2022-11-02 20:24:18,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:17" (2/3) ... [2022-11-02 20:24:18,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56630de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:18, skipping insertion in model container [2022-11-02 20:24:18,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:18" (3/3) ... [2022-11-02 20:24:18,295 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-11-02 20:24:18,313 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:24:18,314 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-02 20:24:18,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:24:18,403 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@9782bef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:24:18,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:24:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:18,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:24:18,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:18,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:24:18,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:18,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:18,436 INFO L85 PathProgramCache]: Analyzing trace with hash 889513814, now seen corresponding path program 1 times [2022-11-02 20:24:18,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:18,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115510645] [2022-11-02 20:24:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:18,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:18,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:18,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115510645] [2022-11-02 20:24:18,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115510645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:18,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:18,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:18,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154217412] [2022-11-02 20:24:18,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:18,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:18,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:18,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:18,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:18,751 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2022-11-02 20:24:18,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:18,826 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-11-02 20:24:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:24:18,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2022-11-02 20:24:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:18,839 INFO L225 Difference]: With dead ends: 35 [2022-11-02 20:24:18,839 INFO L226 Difference]: Without dead ends: 13 [2022-11-02 20:24:18,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:18,846 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:18,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 23 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:24:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-02 20:24:18,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-02 20:24:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-02 20:24:18,882 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2022-11-02 20:24:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:18,882 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-02 20:24:18,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2022-11-02 20:24:18,883 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-02 20:24:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:24:18,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:18,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:24:18,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:24:18,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:18,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:18,885 INFO L85 PathProgramCache]: Analyzing trace with hash 889513869, now seen corresponding path program 1 times [2022-11-02 20:24:18,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:18,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021512160] [2022-11-02 20:24:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:18,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:18,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:18,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021512160] [2022-11-02 20:24:18,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021512160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:18,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:18,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:24:18,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376005125] [2022-11-02 20:24:18,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:18,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:18,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:18,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:18,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:18,944 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-11-02 20:24:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:18,980 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-11-02 20:24:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:24:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2022-11-02 20:24:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:18,981 INFO L225 Difference]: With dead ends: 15 [2022-11-02 20:24:18,981 INFO L226 Difference]: Without dead ends: 14 [2022-11-02 20:24:18,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:18,984 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:18,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:24:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-02 20:24:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-02 20:24:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-02 20:24:18,990 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2022-11-02 20:24:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:18,990 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-02 20:24:18,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2022-11-02 20:24:18,991 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-02 20:24:18,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:24:18,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:18,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:18,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:24:18,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:18,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:18,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126220, now seen corresponding path program 1 times [2022-11-02 20:24:18,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:18,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139000539] [2022-11-02 20:24:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:18,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:19,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:19,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139000539] [2022-11-02 20:24:19,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139000539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:19,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:19,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:24:19,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033358546] [2022-11-02 20:24:19,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:19,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:19,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:19,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:19,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:19,104 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:19,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:19,146 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-11-02 20:24:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:24:19,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:24:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:19,148 INFO L225 Difference]: With dead ends: 15 [2022-11-02 20:24:19,149 INFO L226 Difference]: Without dead ends: 14 [2022-11-02 20:24:19,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:19,151 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:19,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:24:19,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-02 20:24:19,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-11-02 20:24:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-02 20:24:19,159 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2022-11-02 20:24:19,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:19,159 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-02 20:24:19,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-02 20:24:19,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:24:19,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:19,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:19,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:24:19,162 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash -440488521, now seen corresponding path program 1 times [2022-11-02 20:24:19,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:19,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755854550] [2022-11-02 20:24:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:19,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:24:19,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:19,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755854550] [2022-11-02 20:24:19,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755854550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:19,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:19,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:24:19,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629194949] [2022-11-02 20:24:19,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:19,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:24:19,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:19,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:24:19,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:24:19,210 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:19,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:19,236 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-02 20:24:19,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:24:19,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:24:19,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:19,238 INFO L225 Difference]: With dead ends: 23 [2022-11-02 20:24:19,239 INFO L226 Difference]: Without dead ends: 22 [2022-11-02 20:24:19,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:24:19,243 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:19,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:24:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-02 20:24:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-11-02 20:24:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-02 20:24:19,253 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2022-11-02 20:24:19,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:19,253 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-02 20:24:19,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-02 20:24:19,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:24:19,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:19,255 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:19,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:24:19,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:19,261 INFO L85 PathProgramCache]: Analyzing trace with hash -440488466, now seen corresponding path program 1 times [2022-11-02 20:24:19,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:19,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122708521] [2022-11-02 20:24:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:19,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:19,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:19,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:19,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122708521] [2022-11-02 20:24:19,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122708521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:19,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19181057] [2022-11-02 20:24:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:19,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:19,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:19,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:19,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:24:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:19,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:24:19,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:19,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:19,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19181057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:19,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:19,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-02 20:24:19,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9958485] [2022-11-02 20:24:19,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:19,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:24:19,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:19,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:24:19,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:24:19,708 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:19,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:19,823 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-11-02 20:24:19,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:19,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:24:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:19,825 INFO L225 Difference]: With dead ends: 35 [2022-11-02 20:24:19,825 INFO L226 Difference]: Without dead ends: 21 [2022-11-02 20:24:19,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:24:19,827 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:19,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-02 20:24:19,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-11-02 20:24:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:19,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-02 20:24:19,835 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9 [2022-11-02 20:24:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:19,836 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-02 20:24:19,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-02 20:24:19,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:24:19,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:19,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:19,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:20,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:20,066 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:20,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:20,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1116435329, now seen corresponding path program 1 times [2022-11-02 20:24:20,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:20,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025422751] [2022-11-02 20:24:20,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:20,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:24:20,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:20,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025422751] [2022-11-02 20:24:20,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025422751] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:20,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890786088] [2022-11-02 20:24:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:20,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:20,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:20,170 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:20,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:24:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:20,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:24:20,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:24:20,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:24:20,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890786088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:20,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:20,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-02 20:24:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950617099] [2022-11-02 20:24:20,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:20,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:24:20,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:24:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:20,321 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:20,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:20,372 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-11-02 20:24:20,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:24:20,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:24:20,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:20,374 INFO L225 Difference]: With dead ends: 47 [2022-11-02 20:24:20,374 INFO L226 Difference]: Without dead ends: 46 [2022-11-02 20:24:20,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:24:20,375 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:20,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:24:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-02 20:24:20,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-11-02 20:24:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-11-02 20:24:20,403 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 16 [2022-11-02 20:24:20,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:20,403 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-11-02 20:24:20,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:20,404 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-11-02 20:24:20,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:24:20,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:20,405 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:20,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:20,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:20,620 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:20,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:20,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1116435274, now seen corresponding path program 1 times [2022-11-02 20:24:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:20,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749957529] [2022-11-02 20:24:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:20,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:20,739 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:24:20,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:20,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749957529] [2022-11-02 20:24:20,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749957529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:20,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519542113] [2022-11-02 20:24:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:20,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:20,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:20,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:20,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:24:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:20,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:24:20,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:24:20,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:24:20,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519542113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:20,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:20,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-02 20:24:20,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686194602] [2022-11-02 20:24:20,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:20,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:24:20,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:20,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:24:20,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:24:20,939 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:21,454 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-11-02 20:24:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 20:24:21,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:24:21,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:21,456 INFO L225 Difference]: With dead ends: 66 [2022-11-02 20:24:21,456 INFO L226 Difference]: Without dead ends: 65 [2022-11-02 20:24:21,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=321, Invalid=939, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 20:24:21,458 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 69 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:21,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 17 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:21,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-02 20:24:21,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2022-11-02 20:24:21,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 54 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2022-11-02 20:24:21,469 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 16 [2022-11-02 20:24:21,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:21,470 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2022-11-02 20:24:21,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:21,470 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2022-11-02 20:24:21,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 20:24:21,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:21,471 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:21,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:21,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:24:21,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1093492138, now seen corresponding path program 2 times [2022-11-02 20:24:21,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:21,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282771474] [2022-11-02 20:24:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:21,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:24:21,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:21,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282771474] [2022-11-02 20:24:21,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282771474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:21,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603104067] [2022-11-02 20:24:21,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:24:21,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:21,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:21,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:21,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:24:21,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:24:21,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:24:21,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:24:21,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:24:22,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:24:22,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603104067] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:22,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:22,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-11-02 20:24:22,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193778784] [2022-11-02 20:24:22,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:22,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:24:22,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:22,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:24:22,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:24:22,220 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:23,213 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2022-11-02 20:24:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:24:23,217 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-02 20:24:23,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:23,218 INFO L225 Difference]: With dead ends: 101 [2022-11-02 20:24:23,218 INFO L226 Difference]: Without dead ends: 64 [2022-11-02 20:24:23,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=483, Invalid=1773, Unknown=0, NotChecked=0, Total=2256 [2022-11-02 20:24:23,220 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 78 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:23,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 18 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:24:23,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-02 20:24:23,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2022-11-02 20:24:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-11-02 20:24:23,237 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 22 [2022-11-02 20:24:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:23,237 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-11-02 20:24:23,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-11-02 20:24:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:24:23,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:23,242 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-11-02 20:24:23,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:23,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:23,463 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:23,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:23,464 INFO L85 PathProgramCache]: Analyzing trace with hash -382530633, now seen corresponding path program 2 times [2022-11-02 20:24:23,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:23,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275964901] [2022-11-02 20:24:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:23,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-02 20:24:23,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:23,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275964901] [2022-11-02 20:24:23,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275964901] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:23,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378711082] [2022-11-02 20:24:23,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:24:23,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:23,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:23,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:23,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:24:23,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:24:23,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:24:23,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:24:23,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-02 20:24:23,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-02 20:24:23,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378711082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:23,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:23,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-11-02 20:24:23,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913209013] [2022-11-02 20:24:23,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:23,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:23,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:23,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:23,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:23,765 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:23,790 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-11-02 20:24:23,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:24:23,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-02 20:24:23,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:23,791 INFO L225 Difference]: With dead ends: 43 [2022-11-02 20:24:23,792 INFO L226 Difference]: Without dead ends: 42 [2022-11-02 20:24:23,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:23,795 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 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 [2022-11-02 20:24:23,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:24:23,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-02 20:24:23,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-11-02 20:24:23,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:23,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-11-02 20:24:23,810 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 37 [2022-11-02 20:24:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:23,810 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-11-02 20:24:23,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:23,811 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-11-02 20:24:23,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 20:24:23,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:23,817 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1] [2022-11-02 20:24:23,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:24,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:24,036 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:24,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:24,036 INFO L85 PathProgramCache]: Analyzing trace with hash -382530578, now seen corresponding path program 3 times [2022-11-02 20:24:24,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:24,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102385442] [2022-11-02 20:24:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:24,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:24:24,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:24,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102385442] [2022-11-02 20:24:24,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102385442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:24,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607421114] [2022-11-02 20:24:24,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:24:24,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:24,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:24,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:24,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:24:24,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-02 20:24:24,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:24:24,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:24:24,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:24,385 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:24:24,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:24:24,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607421114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:24,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:24,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-02 20:24:24,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636891844] [2022-11-02 20:24:24,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:24,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 20:24:24,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:24,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 20:24:24,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:24:24,591 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:26,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:26,222 INFO L93 Difference]: Finished difference Result 154 states and 181 transitions. [2022-11-02 20:24:26,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-02 20:24:26,222 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 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 37 [2022-11-02 20:24:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:26,226 INFO L225 Difference]: With dead ends: 154 [2022-11-02 20:24:26,226 INFO L226 Difference]: Without dead ends: 153 [2022-11-02 20:24:26,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2822 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1886, Invalid=5770, Unknown=0, NotChecked=0, Total=7656 [2022-11-02 20:24:26,232 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 277 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:26,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 21 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:24:26,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-02 20:24:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 106. [2022-11-02 20:24:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 105 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2022-11-02 20:24:26,279 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 37 [2022-11-02 20:24:26,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:26,280 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2022-11-02 20:24:26,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2022-11-02 20:24:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-02 20:24:26,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:26,284 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 4, 4, 4, 1, 1, 1, 1] [2022-11-02 20:24:26,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:26,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:24:26,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1842534286, now seen corresponding path program 4 times [2022-11-02 20:24:26,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:26,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113848531] [2022-11-02 20:24:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:26,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 59 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:24:26,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:26,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113848531] [2022-11-02 20:24:26,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113848531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:26,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648861226] [2022-11-02 20:24:26,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:24:26,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:26,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:26,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:26,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:24:26,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:24:26,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:24:26,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:24:26,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:24:27,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:24:27,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648861226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:27,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:27,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2022-11-02 20:24:27,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183979849] [2022-11-02 20:24:27,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:27,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-02 20:24:27,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:27,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-02 20:24:27,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 20:24:27,390 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:35,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:35,233 INFO L93 Difference]: Finished difference Result 360 states and 430 transitions. [2022-11-02 20:24:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-11-02 20:24:35,236 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 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 43 [2022-11-02 20:24:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:35,239 INFO L225 Difference]: With dead ends: 360 [2022-11-02 20:24:35,239 INFO L226 Difference]: Without dead ends: 296 [2022-11-02 20:24:35,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16311 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=5653, Invalid=35353, Unknown=0, NotChecked=0, Total=41006 [2022-11-02 20:24:35,255 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 842 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:35,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 21 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:24:35,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-02 20:24:35,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 194. [2022-11-02 20:24:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.1917098445595855) internal successors, (230), 193 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2022-11-02 20:24:35,302 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 43 [2022-11-02 20:24:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:35,303 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2022-11-02 20:24:35,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2022-11-02 20:24:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:24:35,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:35,304 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 5, 5, 5, 1, 1, 1, 1] [2022-11-02 20:24:35,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:35,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:35,528 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:35,528 INFO L85 PathProgramCache]: Analyzing trace with hash -369537692, now seen corresponding path program 5 times [2022-11-02 20:24:35,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:35,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388091080] [2022-11-02 20:24:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:35,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 19 proven. 163 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:24:35,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:35,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388091080] [2022-11-02 20:24:35,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388091080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:35,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74484182] [2022-11-02 20:24:35,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:24:35,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:35,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:35,792 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:35,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:24:35,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-02 20:24:35,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:24:35,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:24:35,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 64 proven. 119 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:24:36,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 36 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:24:36,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74484182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:36,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:36,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 29 [2022-11-02 20:24:36,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106282895] [2022-11-02 20:24:36,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:36,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:24:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:24:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:24:36,420 INFO L87 Difference]: Start difference. First operand 194 states and 230 transitions. Second operand has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:37,925 INFO L93 Difference]: Finished difference Result 615 states and 726 transitions. [2022-11-02 20:24:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-02 20:24:37,926 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 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 50 [2022-11-02 20:24:37,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:37,932 INFO L225 Difference]: With dead ends: 615 [2022-11-02 20:24:37,932 INFO L226 Difference]: Without dead ends: 443 [2022-11-02 20:24:37,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 77 SyntacticMatches, 8 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1497 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1328, Invalid=4372, Unknown=0, NotChecked=0, Total=5700 [2022-11-02 20:24:37,939 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 135 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:37,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 19 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:24:37,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-02 20:24:38,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 391. [2022-11-02 20:24:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.1564102564102565) internal successors, (451), 390 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 451 transitions. [2022-11-02 20:24:38,016 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 451 transitions. Word has length 50 [2022-11-02 20:24:38,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:38,017 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 451 transitions. [2022-11-02 20:24:38,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 451 transitions. [2022-11-02 20:24:38,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-02 20:24:38,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:38,021 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 5, 5, 5, 1, 1, 1, 1] [2022-11-02 20:24:38,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:38,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:24:38,248 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:38,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:38,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1350252270, now seen corresponding path program 6 times [2022-11-02 20:24:38,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:38,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116967576] [2022-11-02 20:24:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:38,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:24:38,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:38,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116967576] [2022-11-02 20:24:38,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116967576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:38,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787381649] [2022-11-02 20:24:38,417 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:24:38,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:38,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:38,418 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:38,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:24:38,468 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-02 20:24:38,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:24:38,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:24:38,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 46 proven. 157 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-02 20:24:38,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 7 proven. 196 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-02 20:24:38,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787381649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:38,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:38,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2022-11-02 20:24:38,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33406423] [2022-11-02 20:24:38,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:38,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:24:38,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:38,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:24:38,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:24:38,907 INFO L87 Difference]: Start difference. First operand 391 states and 451 transitions. Second operand has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:46,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:46,662 INFO L93 Difference]: Finished difference Result 1792 states and 2148 transitions. [2022-11-02 20:24:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2022-11-02 20:24:46,663 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-02 20:24:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:46,671 INFO L225 Difference]: With dead ends: 1792 [2022-11-02 20:24:46,671 INFO L226 Difference]: Without dead ends: 1791 [2022-11-02 20:24:46,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30921 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=12783, Invalid=52497, Unknown=0, NotChecked=0, Total=65280 [2022-11-02 20:24:46,679 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 390 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:46,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 16 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:24:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2022-11-02 20:24:46,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 610. [2022-11-02 20:24:46,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.1592775041050902) internal successors, (706), 609 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 706 transitions. [2022-11-02 20:24:46,812 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 706 transitions. Word has length 56 [2022-11-02 20:24:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:46,813 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 706 transitions. [2022-11-02 20:24:46,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 706 transitions. [2022-11-02 20:24:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:24:46,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:46,815 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1] [2022-11-02 20:24:46,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:47,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:24:47,024 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:47,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:47,024 INFO L85 PathProgramCache]: Analyzing trace with hash 529185006, now seen corresponding path program 7 times [2022-11-02 20:24:47,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:47,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399448378] [2022-11-02 20:24:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:47,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:24:47,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:47,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399448378] [2022-11-02 20:24:47,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399448378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:47,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762775873] [2022-11-02 20:24:47,329 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:24:47,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:47,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:47,331 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:47,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:24:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:47,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:24:47,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:24:47,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:24:48,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762775873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:48,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:48,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-11-02 20:24:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007751528] [2022-11-02 20:24:48,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:48,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-02 20:24:48,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:48,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-02 20:24:48,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 20:24:48,031 INFO L87 Difference]: Start difference. First operand 610 states and 706 transitions. Second operand has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:53,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:53,830 INFO L93 Difference]: Finished difference Result 4763 states and 5599 transitions. [2022-11-02 20:24:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-11-02 20:24:53,831 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-02 20:24:53,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:53,847 INFO L225 Difference]: With dead ends: 4763 [2022-11-02 20:24:53,847 INFO L226 Difference]: Without dead ends: 4762 [2022-11-02 20:24:53,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16160 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=9119, Invalid=29101, Unknown=0, NotChecked=0, Total=38220 [2022-11-02 20:24:53,852 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 526 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:53,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 27 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:24:53,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2022-11-02 20:24:54,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 1183. [2022-11-02 20:24:54,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.1455160744500845) internal successors, (1354), 1182 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1354 transitions. [2022-11-02 20:24:54,080 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1354 transitions. Word has length 79 [2022-11-02 20:24:54,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:54,080 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1354 transitions. [2022-11-02 20:24:54,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1354 transitions. [2022-11-02 20:24:54,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-02 20:24:54,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:54,082 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 11, 10, 10, 10, 1, 1, 1, 1] [2022-11-02 20:24:54,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:54,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:24:54,295 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:24:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:54,296 INFO L85 PathProgramCache]: Analyzing trace with hash 480518066, now seen corresponding path program 8 times [2022-11-02 20:24:54,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:54,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299136092] [2022-11-02 20:24:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:54,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 380 proven. 92 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-11-02 20:24:54,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:54,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299136092] [2022-11-02 20:24:54,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299136092] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:54,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907303273] [2022-11-02 20:24:54,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:24:54,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:54,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:54,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:54,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:24:54,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:24:54,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:24:54,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:24:54,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 779 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:24:55,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 1 proven. 778 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:24:55,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907303273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:55,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:55,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 42 [2022-11-02 20:24:55,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812768321] [2022-11-02 20:24:55,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:55,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-02 20:24:55,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:55,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-02 20:24:55,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1521, Unknown=0, NotChecked=0, Total=1806 [2022-11-02 20:24:55,664 INFO L87 Difference]: Start difference. First operand 1183 states and 1354 transitions. Second operand has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:49,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:49,145 INFO L93 Difference]: Finished difference Result 14418 states and 17384 transitions. [2022-11-02 20:25:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 887 states. [2022-11-02 20:25:49,146 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 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 97 [2022-11-02 20:25:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:49,186 INFO L225 Difference]: With dead ends: 14418 [2022-11-02 20:25:49,186 INFO L226 Difference]: Without dead ends: 13834 [2022-11-02 20:25:49,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 917 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424255 ImplicationChecksByTransitivity, 48.5s TimeCoverageRelationStatistics Valid=83086, Invalid=760556, Unknown=0, NotChecked=0, Total=843642 [2022-11-02 20:25:49,239 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2973 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 1741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1741 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:49,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2973 Valid, 20 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1741 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:25:49,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13834 states. [2022-11-02 20:25:50,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13834 to 5483. [2022-11-02 20:25:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5483 states, 5482 states have (on average 1.1742064939802992) internal successors, (6437), 5482 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 6437 transitions. [2022-11-02 20:25:51,018 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 6437 transitions. Word has length 97 [2022-11-02 20:25:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:51,019 INFO L495 AbstractCegarLoop]: Abstraction has 5483 states and 6437 transitions. [2022-11-02 20:25:51,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:51,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 6437 transitions. [2022-11-02 20:25:51,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-02 20:25:51,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:51,027 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 19, 18, 18, 18, 1, 1, 1, 1] [2022-11-02 20:25:51,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:51,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:25:51,255 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:25:51,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:51,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2108411831, now seen corresponding path program 9 times [2022-11-02 20:25:51,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:51,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285500281] [2022-11-02 20:25:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:51,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 0 proven. 1837 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-02 20:25:51,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:51,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285500281] [2022-11-02 20:25:51,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285500281] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:25:51,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559758448] [2022-11-02 20:25:51,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:25:51,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:25:51,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:25:51,998 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:25:51,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:25:52,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-11-02 20:25:52,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:25:52,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 20:25:52,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 941 proven. 267 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-02 20:25:52,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 941 proven. 267 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-11-02 20:25:53,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559758448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:53,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:25:53,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 13] total 46 [2022-11-02 20:25:53,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405542915] [2022-11-02 20:25:53,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:53,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-02 20:25:53,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:53,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-02 20:25:53,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1765, Unknown=0, NotChecked=0, Total=2162 [2022-11-02 20:25:53,168 INFO L87 Difference]: Start difference. First operand 5483 states and 6437 transitions. Second operand has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:00,543 INFO L93 Difference]: Finished difference Result 38309 states and 45691 transitions. [2022-11-02 20:27:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 674 states. [2022-11-02 20:27:00,544 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 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 150 [2022-11-02 20:27:00,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:00,630 INFO L225 Difference]: With dead ends: 38309 [2022-11-02 20:27:00,631 INFO L226 Difference]: Without dead ends: 38308 [2022-11-02 20:27:00,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 712 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252889 ImplicationChecksByTransitivity, 54.8s TimeCoverageRelationStatistics Valid=81696, Invalid=427386, Unknown=0, NotChecked=0, Total=509082 [2022-11-02 20:27:00,665 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4990 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 3538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4990 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 4633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3538 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:00,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4990 Valid, 20 Invalid, 4633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3538 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 20:27:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38308 states. [2022-11-02 20:27:02,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38308 to 4807. [2022-11-02 20:27:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4807 states, 4806 states have (on average 1.188930503537245) internal successors, (5714), 4806 states have internal predecessors, (5714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4807 states to 4807 states and 5714 transitions. [2022-11-02 20:27:02,219 INFO L78 Accepts]: Start accepts. Automaton has 4807 states and 5714 transitions. Word has length 150 [2022-11-02 20:27:02,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:02,219 INFO L495 AbstractCegarLoop]: Abstraction has 4807 states and 5714 transitions. [2022-11-02 20:27:02,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4807 states and 5714 transitions. [2022-11-02 20:27:02,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-02 20:27:02,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:02,226 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 22, 22, 22, 1, 1, 1, 1] [2022-11-02 20:27:02,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:02,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:27:02,451 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-02 20:27:02,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:02,452 INFO L85 PathProgramCache]: Analyzing trace with hash -472821010, now seen corresponding path program 10 times [2022-11-02 20:27:02,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:02,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109656105] [2022-11-02 20:27:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:02,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:27:03,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:03,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109656105] [2022-11-02 20:27:03,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109656105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:27:03,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17716274] [2022-11-02 20:27:03,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:27:03,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:03,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:27:03,183 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:27:03,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c07e73c-5623-456a-85fd-5d84422c4b84/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:27:03,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:27:03,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:27:03,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:27:03,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:27:03,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 20:27:04,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17716274] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:04,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:27:04,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2022-11-02 20:27:04,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204137155] [2022-11-02 20:27:04,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:04,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-02 20:27:04,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:04,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-02 20:27:04,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=1986, Unknown=0, NotChecked=0, Total=3192 [2022-11-02 20:27:04,590 INFO L87 Difference]: Start difference. First operand 4807 states and 5714 transitions. Second operand has 57 states, 56 states have (on average 5.892857142857143) internal successors, (330), 57 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:28:00,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:28:00,212 INFO L93 Difference]: Finished difference Result 124956 states and 148729 transitions. [2022-11-02 20:28:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 406 states. [2022-11-02 20:28:00,213 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.892857142857143) internal successors, (330), 57 states have internal predecessors, (330), 0 states have call successors, (0), 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 163 [2022-11-02 20:28:00,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:28:00,440 INFO L225 Difference]: With dead ends: 124956 [2022-11-02 20:28:00,440 INFO L226 Difference]: Without dead ends: 124955 [2022-11-02 20:28:00,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75530 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=39677, Invalid=129655, Unknown=0, NotChecked=0, Total=169332 [2022-11-02 20:28:00,481 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1466 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:28:00,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 44 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:28:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124955 states.