./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/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_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/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 32bit --witnessprinter.graph.data.programhash c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- 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 20:08:09,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:08:09,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:08:09,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:08:09,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:08:09,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:08:09,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:08:09,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:08:09,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:08:09,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:08:09,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:08:09,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:08:09,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:08:09,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:08:09,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:08:09,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:08:09,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:08:09,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:08:09,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:08:09,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:08:09,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:08:09,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:08:09,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:08:09,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:08:09,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:08:09,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:08:09,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:08:09,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:08:09,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:08:09,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:08:09,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:08:09,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:08:09,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:08:09,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:08:09,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:08:09,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:08:09,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:08:09,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:08:09,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:08:09,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:08:09,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:08:09,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:08:09,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:08:09,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:08:09,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:08:09,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:08:09,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:08:09,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:08:09,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:08:09,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:08:09,993 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:08:09,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:08:09,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:08:09,994 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:08:09,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:08:09,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:08:09,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:08:09,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:08:09,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:08:09,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:08:09,999 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:08:09,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:08:09,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:08:10,000 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:08:10,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:08:10,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:08:10,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:08:10,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:08:10,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:10,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:08:10,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:08:10,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:08:10,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:08:10,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:08:10,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:08:10,004 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_ef4bab90-812c-4141-803a-7ca414c26a9c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2022-11-02 20:08:10,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:08:10,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:08:10,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:08:10,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:08:10,442 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:08:10,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-11-02 20:08:10,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/data/882ddeb98/a02c5c4d6efb41d991bcffce5af3ab31/FLAGb66329213 [2022-11-02 20:08:11,324 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:08:11,326 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-11-02 20:08:11,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/data/882ddeb98/a02c5c4d6efb41d991bcffce5af3ab31/FLAGb66329213 [2022-11-02 20:08:11,629 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/data/882ddeb98/a02c5c4d6efb41d991bcffce5af3ab31 [2022-11-02 20:08:11,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:08:11,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:08:11,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:11,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:08:11,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:08:11,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:11" (1/1) ... [2022-11-02 20:08:11,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a076968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:11, skipping insertion in model container [2022-11-02 20:08:11,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:11" (1/1) ... [2022-11-02 20:08:11,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:08:11,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:08:11,989 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-11-02 20:08:12,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:12,026 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:08:12,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-11-02 20:08:12,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:12,143 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:08:12,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12 WrapperNode [2022-11-02 20:08:12,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:12,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:12,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:08:12,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:08:12,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (1/1) ... [2022-11-02 20:08:12,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (1/1) ... [2022-11-02 20:08:12,235 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 277 [2022-11-02 20:08:12,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:12,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:08:12,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:08:12,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:08:12,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (1/1) ... [2022-11-02 20:08:12,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (1/1) ... [2022-11-02 20:08:12,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (1/1) ... [2022-11-02 20:08:12,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (1/1) ... [2022-11-02 20:08:12,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (1/1) ... [2022-11-02 20:08:12,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (1/1) ... [2022-11-02 20:08:12,280 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (1/1) ... [2022-11-02 20:08:12,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (1/1) ... [2022-11-02 20:08:12,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:08:12,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:08:12,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:08:12,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:08:12,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (1/1) ... [2022-11-02 20:08:12,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:12,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:12,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:12,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:08:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:08:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:08:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:08:12,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:08:12,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:08:12,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:08:12,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:08:12,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:08:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:08:12,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:08:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:08:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:08:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:08:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:08:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:08:12,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:08:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:08:12,421 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:08:12,684 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:08:12,687 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:08:13,406 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:08:13,768 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:08:13,769 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-02 20:08:13,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:13 BoogieIcfgContainer [2022-11-02 20:08:13,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:08:13,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:08:13,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:08:13,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:08:13,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:08:11" (1/3) ... [2022-11-02 20:08:13,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252d15ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:13, skipping insertion in model container [2022-11-02 20:08:13,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:12" (2/3) ... [2022-11-02 20:08:13,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252d15ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:13, skipping insertion in model container [2022-11-02 20:08:13,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:13" (3/3) ... [2022-11-02 20:08:13,789 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2022-11-02 20:08:13,804 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:08:13,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:08:13,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-02 20:08:13,815 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:08:13,961 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:08:14,042 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:08:14,062 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 252 transitions, 528 flow [2022-11-02 20:08:14,066 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 252 transitions, 528 flow [2022-11-02 20:08:14,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 252 transitions, 528 flow [2022-11-02 20:08:14,203 INFO L130 PetriNetUnfolder]: 18/249 cut-off events. [2022-11-02 20:08:14,203 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:08:14,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 249 events. 18/249 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 236 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 204. Up to 3 conditions per place. [2022-11-02 20:08:14,220 INFO L118 LiptonReduction]: Number of co-enabled transitions 3852 [2022-11-02 20:08:31,411 INFO L133 LiptonReduction]: Checked pairs total: 7191 [2022-11-02 20:08:31,411 INFO L135 LiptonReduction]: Total number of compositions: 274 [2022-11-02 20:08:31,422 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 51 transitions, 126 flow [2022-11-02 20:08:31,567 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1614 states, 1366 states have (on average 4.085651537335285) internal successors, (5581), 1613 states have internal predecessors, (5581), 0 states have call successors, (0), 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 20:08:31,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:08:31,606 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;@50bf7954, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:08:31,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-02 20:08:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 1614 states, 1366 states have (on average 4.085651537335285) internal successors, (5581), 1613 states have internal predecessors, (5581), 0 states have call successors, (0), 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 20:08:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-02 20:08:31,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:31,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-02 20:08:31,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:31,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash 37886, now seen corresponding path program 1 times [2022-11-02 20:08:31,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:31,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585429572] [2022-11-02 20:08:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:31,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:31,961 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 20:08:31,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:31,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585429572] [2022-11-02 20:08:31,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585429572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:31,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:31,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:08:31,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74722189] [2022-11-02 20:08:31,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:31,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:31,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:32,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:32,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:32,017 INFO L87 Difference]: Start difference. First operand has 1614 states, 1366 states have (on average 4.085651537335285) internal successors, (5581), 1613 states have internal predecessors, (5581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 20:08:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:32,208 INFO L93 Difference]: Finished difference Result 906 states and 3019 transitions. [2022-11-02 20:08:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:32,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-02 20:08:32,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:32,245 INFO L225 Difference]: With dead ends: 906 [2022-11-02 20:08:32,246 INFO L226 Difference]: Without dead ends: 906 [2022-11-02 20:08:32,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 20:08:32,250 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 34 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:32,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:32,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-11-02 20:08:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 906. [2022-11-02 20:08:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 805 states have (on average 3.7503105590062114) internal successors, (3019), 905 states have internal predecessors, (3019), 0 states have call successors, (0), 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 20:08:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 3019 transitions. [2022-11-02 20:08:32,429 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 3019 transitions. Word has length 2 [2022-11-02 20:08:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:32,430 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 3019 transitions. [2022-11-02 20:08:32,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 20:08:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 3019 transitions. [2022-11-02 20:08:32,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-02 20:08:32,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:32,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-02 20:08:32,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:08:32,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash 37884, now seen corresponding path program 1 times [2022-11-02 20:08:32,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:32,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514717484] [2022-11-02 20:08:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:32,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:32,642 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 20:08:32,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:32,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514717484] [2022-11-02 20:08:32,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514717484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:32,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:32,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:08:32,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386239584] [2022-11-02 20:08:32,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:32,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:32,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:32,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:32,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:32,661 INFO L87 Difference]: Start difference. First operand 906 states and 3019 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 20:08:32,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:32,890 INFO L93 Difference]: Finished difference Result 1809 states and 6035 transitions. [2022-11-02 20:08:32,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:32,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-02 20:08:32,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:32,921 INFO L225 Difference]: With dead ends: 1809 [2022-11-02 20:08:32,921 INFO L226 Difference]: Without dead ends: 1809 [2022-11-02 20:08:32,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 20:08:32,923 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 32 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:32,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:08:32,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-11-02 20:08:32,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 908. [2022-11-02 20:08:32,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 807 states have (on average 3.745972738537794) internal successors, (3023), 907 states have internal predecessors, (3023), 0 states have call successors, (0), 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 20:08:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 3023 transitions. [2022-11-02 20:08:32,993 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 3023 transitions. Word has length 2 [2022-11-02 20:08:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:32,994 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 3023 transitions. [2022-11-02 20:08:32,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 20:08:32,994 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 3023 transitions. [2022-11-02 20:08:32,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:08:32,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:32,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:08:32,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:08:32,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1176421, now seen corresponding path program 1 times [2022-11-02 20:08:32,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:33,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722659282] [2022-11-02 20:08:33,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:33,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:33,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:33,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722659282] [2022-11-02 20:08:33,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722659282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:33,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615883530] [2022-11-02 20:08:33,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:33,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:33,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:33,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:33,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:08:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:33,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:08:33,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:33,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:33,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:33,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615883530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:33,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:33,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-02 20:08:33,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299664280] [2022-11-02 20:08:33,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:33,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:08:33,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:33,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:08:33,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:08:33,338 INFO L87 Difference]: Start difference. First operand 908 states and 3023 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 20:08:33,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:33,893 INFO L93 Difference]: Finished difference Result 4518 states and 15083 transitions. [2022-11-02 20:08:33,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:08:33,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 3 [2022-11-02 20:08:33,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:33,937 INFO L225 Difference]: With dead ends: 4518 [2022-11-02 20:08:33,938 INFO L226 Difference]: Without dead ends: 4518 [2022-11-02 20:08:33,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 20:08:33,944 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 128 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:33,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 5 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:08:33,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-11-02 20:08:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 914. [2022-11-02 20:08:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 813 states have (on average 3.7330873308733086) internal successors, (3035), 913 states have internal predecessors, (3035), 0 states have call successors, (0), 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 20:08:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 3035 transitions. [2022-11-02 20:08:34,050 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 3035 transitions. Word has length 3 [2022-11-02 20:08:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:34,050 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 3035 transitions. [2022-11-02 20:08:34,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 20:08:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 3035 transitions. [2022-11-02 20:08:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:08:34,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:34,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:08:34,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:34,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:34,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:34,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:34,277 INFO L85 PathProgramCache]: Analyzing trace with hash 722118558, now seen corresponding path program 1 times [2022-11-02 20:08:34,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:34,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594342506] [2022-11-02 20:08:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:34,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:34,471 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 20:08:34,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:34,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594342506] [2022-11-02 20:08:34,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594342506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:34,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:34,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:08:34,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558029931] [2022-11-02 20:08:34,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:34,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:34,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:34,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:34,475 INFO L87 Difference]: Start difference. First operand 914 states and 3035 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:34,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:34,695 INFO L93 Difference]: Finished difference Result 981 states and 3189 transitions. [2022-11-02 20:08:34,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:08:34,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 20:08:34,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:34,704 INFO L225 Difference]: With dead ends: 981 [2022-11-02 20:08:34,704 INFO L226 Difference]: Without dead ends: 973 [2022-11-02 20:08:34,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 20:08:34,705 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 29 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:34,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:08:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-11-02 20:08:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 972. [2022-11-02 20:08:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 868 states have (on average 3.6509216589861753) internal successors, (3169), 971 states have internal predecessors, (3169), 0 states have call successors, (0), 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 20:08:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 3169 transitions. [2022-11-02 20:08:34,749 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 3169 transitions. Word has length 6 [2022-11-02 20:08:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:34,750 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 3169 transitions. [2022-11-02 20:08:34,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 3169 transitions. [2022-11-02 20:08:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:08:34,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:34,751 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-02 20:08:34,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:08:34,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:34,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:34,752 INFO L85 PathProgramCache]: Analyzing trace with hash 689022524, now seen corresponding path program 2 times [2022-11-02 20:08:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:34,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090179252] [2022-11-02 20:08:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:34,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:34,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:34,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090179252] [2022-11-02 20:08:34,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090179252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:34,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006652609] [2022-11-02 20:08:34,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:34,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:34,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:34,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:34,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:08:35,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:08:35,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:35,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:08:35,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:08:35,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:35,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006652609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:35,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:08:35,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-02 20:08:35,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001252535] [2022-11-02 20:08:35,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:35,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:35,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:35,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:35,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:08:35,069 INFO L87 Difference]: Start difference. First operand 972 states and 3169 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 20:08:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:35,187 INFO L93 Difference]: Finished difference Result 971 states and 3168 transitions. [2022-11-02 20:08:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:35,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 20:08:35,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:35,196 INFO L225 Difference]: With dead ends: 971 [2022-11-02 20:08:35,196 INFO L226 Difference]: Without dead ends: 971 [2022-11-02 20:08:35,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:08:35,198 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:35,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:35,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-11-02 20:08:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 968. [2022-11-02 20:08:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 865 states have (on average 3.655491329479769) internal successors, (3162), 967 states have internal predecessors, (3162), 0 states have call successors, (0), 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 20:08:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 3162 transitions. [2022-11-02 20:08:35,248 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 3162 transitions. Word has length 6 [2022-11-02 20:08:35,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:35,248 INFO L495 AbstractCegarLoop]: Abstraction has 968 states and 3162 transitions. [2022-11-02 20:08:35,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 20:08:35,249 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 3162 transitions. [2022-11-02 20:08:35,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:08:35,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:35,251 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-02 20:08:35,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:35,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:35,479 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:35,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:35,479 INFO L85 PathProgramCache]: Analyzing trace with hash 894518518, now seen corresponding path program 1 times [2022-11-02 20:08:35,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:35,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349868024] [2022-11-02 20:08:35,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:35,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:35,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:35,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349868024] [2022-11-02 20:08:35,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349868024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:35,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370499551] [2022-11-02 20:08:35,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:35,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:35,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:35,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:35,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:08:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:35,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:08:35,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:35,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:35,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370499551] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:35,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:35,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-02 20:08:35,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416563522] [2022-11-02 20:08:35,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:35,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:08:35,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:35,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:08:35,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:08:35,950 INFO L87 Difference]: Start difference. First operand 968 states and 3162 transitions. Second operand has 13 states, 12 states have (on average 1.25) 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 20:08:37,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:37,042 INFO L93 Difference]: Finished difference Result 10529 states and 34554 transitions. [2022-11-02 20:08:37,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:08:37,047 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) 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) Word has length 7 [2022-11-02 20:08:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:37,140 INFO L225 Difference]: With dead ends: 10529 [2022-11-02 20:08:37,141 INFO L226 Difference]: Without dead ends: 10529 [2022-11-02 20:08:37,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:08:37,142 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 640 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:37,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 12 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:08:37,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10529 states. [2022-11-02 20:08:37,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10529 to 980. [2022-11-02 20:08:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 877 states have (on average 3.6328392246294183) internal successors, (3186), 979 states have internal predecessors, (3186), 0 states have call successors, (0), 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 20:08:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 3186 transitions. [2022-11-02 20:08:37,333 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 3186 transitions. Word has length 7 [2022-11-02 20:08:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:37,334 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 3186 transitions. [2022-11-02 20:08:37,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) 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 20:08:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 3186 transitions. [2022-11-02 20:08:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:08:37,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:37,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:37,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-02 20:08:37,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:08:37,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:37,551 INFO L85 PathProgramCache]: Analyzing trace with hash -82040185, now seen corresponding path program 1 times [2022-11-02 20:08:37,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:37,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721452406] [2022-11-02 20:08:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:37,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:37,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721452406] [2022-11-02 20:08:37,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721452406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:37,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637237836] [2022-11-02 20:08:37,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:37,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:37,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:37,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:37,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:08:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:38,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:08:38,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:38,027 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 20:08:38,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:38,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637237836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:38,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:08:38,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-11-02 20:08:38,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954430128] [2022-11-02 20:08:38,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:38,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:38,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:38,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:38,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:08:38,030 INFO L87 Difference]: Start difference. First operand 980 states and 3186 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:38,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:38,107 INFO L93 Difference]: Finished difference Result 670 states and 2134 transitions. [2022-11-02 20:08:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:38,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:08:38,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:38,112 INFO L225 Difference]: With dead ends: 670 [2022-11-02 20:08:38,112 INFO L226 Difference]: Without dead ends: 670 [2022-11-02 20:08:38,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:08:38,114 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:38,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-02 20:08:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2022-11-02 20:08:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 619 states have (on average 3.4474959612277867) internal successors, (2134), 669 states have internal predecessors, (2134), 0 states have call successors, (0), 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 20:08:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 2134 transitions. [2022-11-02 20:08:38,146 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 2134 transitions. Word has length 7 [2022-11-02 20:08:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:38,152 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 2134 transitions. [2022-11-02 20:08:38,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:38,153 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 2134 transitions. [2022-11-02 20:08:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:08:38,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:38,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:38,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:38,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:08:38,378 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:38,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:38,379 INFO L85 PathProgramCache]: Analyzing trace with hash -82040128, now seen corresponding path program 1 times [2022-11-02 20:08:38,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:38,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998952046] [2022-11-02 20:08:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:38,468 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 20:08:38,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:38,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998952046] [2022-11-02 20:08:38,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998952046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:38,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:38,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:08:38,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531737854] [2022-11-02 20:08:38,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:38,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:38,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:38,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:38,471 INFO L87 Difference]: Start difference. First operand 670 states and 2134 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:38,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:38,610 INFO L93 Difference]: Finished difference Result 960 states and 3073 transitions. [2022-11-02 20:08:38,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:38,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:08:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:38,617 INFO L225 Difference]: With dead ends: 960 [2022-11-02 20:08:38,618 INFO L226 Difference]: Without dead ends: 960 [2022-11-02 20:08:38,618 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 20:08:38,620 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 23 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:38,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-11-02 20:08:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 770. [2022-11-02 20:08:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 719 states have (on average 3.577190542420028) internal successors, (2572), 769 states have internal predecessors, (2572), 0 states have call successors, (0), 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 20:08:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2572 transitions. [2022-11-02 20:08:38,661 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2572 transitions. Word has length 7 [2022-11-02 20:08:38,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:38,662 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 2572 transitions. [2022-11-02 20:08:38,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2572 transitions. [2022-11-02 20:08:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:08:38,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:38,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:38,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:08:38,665 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1751726022, now seen corresponding path program 1 times [2022-11-02 20:08:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:38,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546067309] [2022-11-02 20:08:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:38,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:38,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:38,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546067309] [2022-11-02 20:08:38,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546067309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:38,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279461227] [2022-11-02 20:08:38,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:38,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:38,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:38,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:38,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:08:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:38,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:08:38,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:38,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:38,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279461227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:38,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:38,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 20:08:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67508654] [2022-11-02 20:08:38,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:38,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:08:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:38,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:08:38,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:08:38,981 INFO L87 Difference]: Start difference. First operand 770 states and 2572 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:39,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:39,369 INFO L93 Difference]: Finished difference Result 1830 states and 6190 transitions. [2022-11-02 20:08:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:08:39,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:08:39,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:39,383 INFO L225 Difference]: With dead ends: 1830 [2022-11-02 20:08:39,384 INFO L226 Difference]: Without dead ends: 1830 [2022-11-02 20:08:39,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:08:39,386 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 159 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:39,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:08:39,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2022-11-02 20:08:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1070. [2022-11-02 20:08:39,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1019 states have (on average 4.107948969578017) internal successors, (4186), 1069 states have internal predecessors, (4186), 0 states have call successors, (0), 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 20:08:39,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 4186 transitions. [2022-11-02 20:08:39,447 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 4186 transitions. Word has length 8 [2022-11-02 20:08:39,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:39,448 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 4186 transitions. [2022-11-02 20:08:39,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 4186 transitions. [2022-11-02 20:08:39,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:08:39,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:39,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:39,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:39,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:39,679 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:39,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:39,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1751726073, now seen corresponding path program 1 times [2022-11-02 20:08:39,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:39,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998794795] [2022-11-02 20:08:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:39,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:39,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:39,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998794795] [2022-11-02 20:08:39,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998794795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:39,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:39,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:08:39,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056130102] [2022-11-02 20:08:39,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:39,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:39,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:39,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:39,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:39,769 INFO L87 Difference]: Start difference. First operand 1070 states and 4186 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:39,917 INFO L93 Difference]: Finished difference Result 970 states and 3546 transitions. [2022-11-02 20:08:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:08:39,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:39,925 INFO L225 Difference]: With dead ends: 970 [2022-11-02 20:08:39,925 INFO L226 Difference]: Without dead ends: 970 [2022-11-02 20:08:39,925 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 20:08:39,926 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 24 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:39,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:39,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-11-02 20:08:39,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2022-11-02 20:08:39,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 935 states have (on average 3.792513368983957) internal successors, (3546), 969 states have internal predecessors, (3546), 0 states have call successors, (0), 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 20:08:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 3546 transitions. [2022-11-02 20:08:39,969 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 3546 transitions. Word has length 8 [2022-11-02 20:08:39,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:39,970 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 3546 transitions. [2022-11-02 20:08:39,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:39,971 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 3546 transitions. [2022-11-02 20:08:39,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:08:39,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:39,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:39,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:08:39,979 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:39,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:39,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1708802705, now seen corresponding path program 1 times [2022-11-02 20:08:39,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:39,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721310168] [2022-11-02 20:08:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:39,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:40,116 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 20:08:40,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:40,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721310168] [2022-11-02 20:08:40,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721310168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:40,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:40,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:08:40,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514183819] [2022-11-02 20:08:40,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:40,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:40,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:40,129 INFO L87 Difference]: Start difference. First operand 970 states and 3546 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:40,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:40,243 INFO L93 Difference]: Finished difference Result 1030 states and 3870 transitions. [2022-11-02 20:08:40,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:40,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:08:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:40,251 INFO L225 Difference]: With dead ends: 1030 [2022-11-02 20:08:40,252 INFO L226 Difference]: Without dead ends: 1001 [2022-11-02 20:08:40,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 20:08:40,253 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:40,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-11-02 20:08:40,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2022-11-02 20:08:40,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 967 states have (on average 3.933815925542916) internal successors, (3804), 1000 states have internal predecessors, (3804), 0 states have call successors, (0), 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 20:08:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 3804 transitions. [2022-11-02 20:08:40,306 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 3804 transitions. Word has length 10 [2022-11-02 20:08:40,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:40,306 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 3804 transitions. [2022-11-02 20:08:40,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:40,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 3804 transitions. [2022-11-02 20:08:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:08:40,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:40,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:40,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:08:40,308 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:40,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash 24981156, now seen corresponding path program 1 times [2022-11-02 20:08:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:40,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737397468] [2022-11-02 20:08:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:40,434 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 20:08:40,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:40,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737397468] [2022-11-02 20:08:40,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737397468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:40,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:40,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:08:40,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372501525] [2022-11-02 20:08:40,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:40,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:40,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:40,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:40,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:40,437 INFO L87 Difference]: Start difference. First operand 1001 states and 3804 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:40,601 INFO L93 Difference]: Finished difference Result 1174 states and 4327 transitions. [2022-11-02 20:08:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:08:40,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:08:40,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:40,609 INFO L225 Difference]: With dead ends: 1174 [2022-11-02 20:08:40,609 INFO L226 Difference]: Without dead ends: 1142 [2022-11-02 20:08:40,609 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 20:08:40,610 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 26 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:40,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-11-02 20:08:40,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1142. [2022-11-02 20:08:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1107 states have (on average 3.766034327009937) internal successors, (4169), 1141 states have internal predecessors, (4169), 0 states have call successors, (0), 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 20:08:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4169 transitions. [2022-11-02 20:08:40,663 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4169 transitions. Word has length 10 [2022-11-02 20:08:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:40,663 INFO L495 AbstractCegarLoop]: Abstraction has 1142 states and 4169 transitions. [2022-11-02 20:08:40,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4169 transitions. [2022-11-02 20:08:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:08:40,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:40,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:40,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:08:40,666 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:40,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:40,666 INFO L85 PathProgramCache]: Analyzing trace with hash -429095253, now seen corresponding path program 1 times [2022-11-02 20:08:40,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:40,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694461647] [2022-11-02 20:08:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:40,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:08:40,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:40,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694461647] [2022-11-02 20:08:40,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694461647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:40,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:40,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:08:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891476605] [2022-11-02 20:08:40,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:40,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:40,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:40,881 INFO L87 Difference]: Start difference. First operand 1142 states and 4169 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:08:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:41,010 INFO L93 Difference]: Finished difference Result 938 states and 3343 transitions. [2022-11-02 20:08:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:41,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-11-02 20:08:41,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:41,016 INFO L225 Difference]: With dead ends: 938 [2022-11-02 20:08:41,016 INFO L226 Difference]: Without dead ends: 938 [2022-11-02 20:08:41,016 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 20:08:41,017 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:41,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-11-02 20:08:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 938. [2022-11-02 20:08:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 903 states have (on average 3.7021040974529345) internal successors, (3343), 937 states have internal predecessors, (3343), 0 states have call successors, (0), 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 20:08:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 3343 transitions. [2022-11-02 20:08:41,057 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 3343 transitions. Word has length 11 [2022-11-02 20:08:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:41,057 INFO L495 AbstractCegarLoop]: Abstraction has 938 states and 3343 transitions. [2022-11-02 20:08:41,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 20:08:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 3343 transitions. [2022-11-02 20:08:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:08:41,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:41,060 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:41,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:08:41,061 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:41,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1819950144, now seen corresponding path program 2 times [2022-11-02 20:08:41,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:41,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743731899] [2022-11-02 20:08:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:41,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:41,239 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 20:08:41,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:41,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743731899] [2022-11-02 20:08:41,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743731899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:41,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303326144] [2022-11-02 20:08:41,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:41,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:41,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:41,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:41,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:08:41,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:08:41,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:41,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:08:41,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:08:41,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:41,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303326144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:41,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:08:41,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-02 20:08:41,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217879773] [2022-11-02 20:08:41,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:41,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:41,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:41,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:41,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:08:41,414 INFO L87 Difference]: Start difference. First operand 938 states and 3343 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:41,488 INFO L93 Difference]: Finished difference Result 808 states and 2909 transitions. [2022-11-02 20:08:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:41,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:08:41,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:41,493 INFO L225 Difference]: With dead ends: 808 [2022-11-02 20:08:41,493 INFO L226 Difference]: Without dead ends: 691 [2022-11-02 20:08:41,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:08:41,495 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:41,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:41,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-11-02 20:08:41,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 367. [2022-11-02 20:08:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 350 states have (on average 3.297142857142857) internal successors, (1154), 366 states have internal predecessors, (1154), 0 states have call successors, (0), 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 20:08:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 1154 transitions. [2022-11-02 20:08:41,516 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 1154 transitions. Word has length 11 [2022-11-02 20:08:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:41,517 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 1154 transitions. [2022-11-02 20:08:41,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 1154 transitions. [2022-11-02 20:08:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:08:41,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:41,518 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1] [2022-11-02 20:08:41,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:41,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:41,732 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:41,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:41,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1451946794, now seen corresponding path program 2 times [2022-11-02 20:08:41,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:41,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034629374] [2022-11-02 20:08:41,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:41,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:42,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:42,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034629374] [2022-11-02 20:08:42,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034629374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:42,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315353994] [2022-11-02 20:08:42,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:42,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:42,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:42,074 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:42,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:08:42,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:08:42,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:42,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:08:42,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-02 20:08:42,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:42,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315353994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:42,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:08:42,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-11-02 20:08:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97056368] [2022-11-02 20:08:42,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:42,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:42,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:42,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:42,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:08:42,271 INFO L87 Difference]: Start difference. First operand 367 states and 1154 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:42,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:42,351 INFO L93 Difference]: Finished difference Result 278 states and 870 transitions. [2022-11-02 20:08:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:42,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:08:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:42,353 INFO L225 Difference]: With dead ends: 278 [2022-11-02 20:08:42,353 INFO L226 Difference]: Without dead ends: 267 [2022-11-02 20:08:42,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:08:42,355 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:42,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-02 20:08:42,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 258. [2022-11-02 20:08:42,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 250 states have (on average 3.36) internal successors, (840), 257 states have internal predecessors, (840), 0 states have call successors, (0), 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 20:08:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 840 transitions. [2022-11-02 20:08:42,366 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 840 transitions. Word has length 13 [2022-11-02 20:08:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:42,366 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 840 transitions. [2022-11-02 20:08:42,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 840 transitions. [2022-11-02 20:08:42,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:08:42,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:42,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:42,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:42,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:08:42,576 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:42,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1718716982, now seen corresponding path program 1 times [2022-11-02 20:08:42,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:42,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617846443] [2022-11-02 20:08:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:42,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:43,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:43,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617846443] [2022-11-02 20:08:43,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617846443] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:43,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752859368] [2022-11-02 20:08:43,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:43,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:43,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:43,207 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:43,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:08:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:43,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:08:43,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:43,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:08:43,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:08:43,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 20:08:43,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:08:43,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 20:08:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:43,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:44,284 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:08:44,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-02 20:08:44,302 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:08:44,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 163 [2022-11-02 20:08:44,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 122 [2022-11-02 20:08:44,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 110 [2022-11-02 20:08:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:44,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752859368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:44,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:44,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-11-02 20:08:44,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127234885] [2022-11-02 20:08:44,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:44,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:08:44,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:44,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:08:44,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=329, Unknown=1, NotChecked=0, Total=380 [2022-11-02 20:08:44,670 INFO L87 Difference]: Start difference. First operand 258 states and 840 transitions. Second operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 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 20:08:46,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:46,461 INFO L93 Difference]: Finished difference Result 412 states and 1200 transitions. [2022-11-02 20:08:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:08:46,465 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 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 13 [2022-11-02 20:08:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:46,467 INFO L225 Difference]: With dead ends: 412 [2022-11-02 20:08:46,467 INFO L226 Difference]: Without dead ends: 412 [2022-11-02 20:08:46,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=253, Invalid=1306, Unknown=1, NotChecked=0, Total=1560 [2022-11-02 20:08:46,468 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 120 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:46,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 23 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 526 Invalid, 0 Unknown, 285 Unchecked, 0.7s Time] [2022-11-02 20:08:46,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-02 20:08:46,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 321. [2022-11-02 20:08:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 313 states have (on average 3.1757188498402558) internal successors, (994), 320 states have internal predecessors, (994), 0 states have call successors, (0), 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 20:08:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 994 transitions. [2022-11-02 20:08:46,482 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 994 transitions. Word has length 13 [2022-11-02 20:08:46,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:46,482 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 994 transitions. [2022-11-02 20:08:46,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 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 20:08:46,483 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 994 transitions. [2022-11-02 20:08:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:08:46,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:46,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:46,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:46,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:08:46,710 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:46,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:46,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1688240789, now seen corresponding path program 1 times [2022-11-02 20:08:46,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:46,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731735063] [2022-11-02 20:08:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:46,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:47,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:47,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731735063] [2022-11-02 20:08:47,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731735063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:47,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893324456] [2022-11-02 20:08:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:47,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:47,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:47,349 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:47,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:08:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:47,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-02 20:08:47,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:47,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:08:47,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:08:47,623 INFO L356 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-02 20:08:47,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-02 20:08:47,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:08:47,770 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:08:47,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:08:47,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:08:47,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:08:47,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:08:48,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 20:08:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:48,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:48,643 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:08:48,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 56 [2022-11-02 20:08:48,664 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-02 20:08:48,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 312 treesize of output 303 [2022-11-02 20:08:48,686 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 20:08:48,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 248 [2022-11-02 20:08:48,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:08:48,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 175 [2022-11-02 20:08:48,721 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-02 20:08:48,722 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 236 treesize of output 212 [2022-11-02 20:08:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:48,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893324456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:48,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:48,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 23 [2022-11-02 20:08:48,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238737959] [2022-11-02 20:08:48,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:48,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-02 20:08:48,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:48,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-02 20:08:48,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=454, Unknown=14, NotChecked=0, Total=600 [2022-11-02 20:08:48,906 INFO L87 Difference]: Start difference. First operand 321 states and 994 transitions. Second operand has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 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 20:08:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:49,835 INFO L93 Difference]: Finished difference Result 481 states and 1477 transitions. [2022-11-02 20:08:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:08:49,836 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 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 13 [2022-11-02 20:08:49,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:49,838 INFO L225 Difference]: With dead ends: 481 [2022-11-02 20:08:49,839 INFO L226 Difference]: Without dead ends: 481 [2022-11-02 20:08:49,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=575, Unknown=14, NotChecked=0, Total=756 [2022-11-02 20:08:49,840 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 112 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 445 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:49,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 22 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 648 Invalid, 0 Unknown, 445 Unchecked, 0.8s Time] [2022-11-02 20:08:49,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-11-02 20:08:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 403. [2022-11-02 20:08:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 395 states have (on average 3.1721518987341772) internal successors, (1253), 402 states have internal predecessors, (1253), 0 states have call successors, (0), 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 20:08:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1253 transitions. [2022-11-02 20:08:49,858 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1253 transitions. Word has length 13 [2022-11-02 20:08:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:49,859 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 1253 transitions. [2022-11-02 20:08:49,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 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 20:08:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1253 transitions. [2022-11-02 20:08:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:08:49,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:49,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:49,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:50,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:08:50,086 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:50,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1923092852, now seen corresponding path program 2 times [2022-11-02 20:08:50,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:50,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191853267] [2022-11-02 20:08:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:50,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:51,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:51,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191853267] [2022-11-02 20:08:51,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191853267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:51,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417438907] [2022-11-02 20:08:51,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:51,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:51,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:51,161 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:51,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:08:51,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:08:51,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:51,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:08:51,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:51,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-02 20:08:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:08:51,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:51,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417438907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:51,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:08:51,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 13 [2022-11-02 20:08:51,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164922256] [2022-11-02 20:08:51,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:51,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:08:51,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:51,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:08:51,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:08:51,556 INFO L87 Difference]: Start difference. First operand 403 states and 1253 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:51,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:51,784 INFO L93 Difference]: Finished difference Result 505 states and 1483 transitions. [2022-11-02 20:08:51,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:08:51,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:08:51,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:51,787 INFO L225 Difference]: With dead ends: 505 [2022-11-02 20:08:51,787 INFO L226 Difference]: Without dead ends: 505 [2022-11-02 20:08:51,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:08:51,788 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 32 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:51,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:08:51,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-11-02 20:08:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 409. [2022-11-02 20:08:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 401 states have (on average 3.1521197007481296) internal successors, (1264), 408 states have internal predecessors, (1264), 0 states have call successors, (0), 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 20:08:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1264 transitions. [2022-11-02 20:08:51,805 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1264 transitions. Word has length 13 [2022-11-02 20:08:51,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:51,805 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 1264 transitions. [2022-11-02 20:08:51,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:51,806 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1264 transitions. [2022-11-02 20:08:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:08:51,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:51,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:51,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:52,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:08:52,022 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:52,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:52,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1923092895, now seen corresponding path program 1 times [2022-11-02 20:08:52,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:52,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660857139] [2022-11-02 20:08:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:52,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:52,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:52,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660857139] [2022-11-02 20:08:52,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660857139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:52,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933613207] [2022-11-02 20:08:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:52,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:52,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:52,622 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:52,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:08:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:52,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 20:08:52,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:52,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:08:52,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:08:52,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:08:53,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:08:53,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:08:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:53,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:53,611 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:08:53,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:08:53,626 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:08:53,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 75 [2022-11-02 20:08:53,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-11-02 20:08:53,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-11-02 20:08:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:53,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933613207] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:53,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:53,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-11-02 20:08:53,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611646688] [2022-11-02 20:08:53,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:53,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:08:53,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:53,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:08:53,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=327, Unknown=3, NotChecked=0, Total=380 [2022-11-02 20:08:53,878 INFO L87 Difference]: Start difference. First operand 409 states and 1264 transitions. Second operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 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 20:08:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:54,570 INFO L93 Difference]: Finished difference Result 437 states and 1334 transitions. [2022-11-02 20:08:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:08:54,571 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 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 13 [2022-11-02 20:08:54,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:54,574 INFO L225 Difference]: With dead ends: 437 [2022-11-02 20:08:54,574 INFO L226 Difference]: Without dead ends: 437 [2022-11-02 20:08:54,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=132, Invalid=795, Unknown=3, NotChecked=0, Total=930 [2022-11-02 20:08:54,576 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:54,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 30 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 189 Unchecked, 0.2s Time] [2022-11-02 20:08:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-02 20:08:54,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 421. [2022-11-02 20:08:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 413 states have (on average 3.1331719128329296) internal successors, (1294), 420 states have internal predecessors, (1294), 0 states have call successors, (0), 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 20:08:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1294 transitions. [2022-11-02 20:08:54,592 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1294 transitions. Word has length 13 [2022-11-02 20:08:54,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:54,592 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 1294 transitions. [2022-11-02 20:08:54,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 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 20:08:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1294 transitions. [2022-11-02 20:08:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:08:54,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:54,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:54,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:54,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:54,810 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:54,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:54,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1923061139, now seen corresponding path program 2 times [2022-11-02 20:08:54,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:54,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243746951] [2022-11-02 20:08:54,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:54,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:55,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:55,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243746951] [2022-11-02 20:08:55,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243746951] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:55,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010640037] [2022-11-02 20:08:55,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:55,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:55,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:55,375 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:55,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:08:55,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:08:55,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:55,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:08:55,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:55,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-02 20:08:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:08:55,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:55,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010640037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:55,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:08:55,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2022-11-02 20:08:55,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102854771] [2022-11-02 20:08:55,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:55,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:08:55,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:55,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:08:55,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:08:55,657 INFO L87 Difference]: Start difference. First operand 421 states and 1294 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:55,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:55,904 INFO L93 Difference]: Finished difference Result 553 states and 1674 transitions. [2022-11-02 20:08:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:08:55,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:08:55,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:55,907 INFO L225 Difference]: With dead ends: 553 [2022-11-02 20:08:55,907 INFO L226 Difference]: Without dead ends: 553 [2022-11-02 20:08:55,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:08:55,908 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 34 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:55,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:08:55,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-02 20:08:55,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 452. [2022-11-02 20:08:55,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 444 states have (on average 3.1126126126126126) internal successors, (1382), 451 states have internal predecessors, (1382), 0 states have call successors, (0), 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 20:08:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1382 transitions. [2022-11-02 20:08:55,928 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1382 transitions. Word has length 13 [2022-11-02 20:08:55,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:55,929 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 1382 transitions. [2022-11-02 20:08:55,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:55,929 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1382 transitions. [2022-11-02 20:08:55,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:08:55,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:55,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:55,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:56,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:56,152 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:56,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1923061182, now seen corresponding path program 1 times [2022-11-02 20:08:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:56,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589350265] [2022-11-02 20:08:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:56,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:56,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:56,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589350265] [2022-11-02 20:08:56,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589350265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:56,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468129775] [2022-11-02 20:08:56,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:56,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:56,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:56,958 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:56,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:08:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:57,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 20:08:57,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:57,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:08:57,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:08:57,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:08:57,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:08:57,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:08:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:57,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:57,847 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:08:57,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:08:57,862 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:08:57,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 145 [2022-11-02 20:08:57,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2022-11-02 20:08:57,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-11-02 20:08:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:58,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468129775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:58,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:08:58,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 18 [2022-11-02 20:08:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003797714] [2022-11-02 20:08:58,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:58,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:08:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:58,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:08:58,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=322, Unknown=4, NotChecked=0, Total=380 [2022-11-02 20:08:58,122 INFO L87 Difference]: Start difference. First operand 452 states and 1382 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:58,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:58,702 INFO L93 Difference]: Finished difference Result 464 states and 1415 transitions. [2022-11-02 20:08:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:08:58,702 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:08:58,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:58,704 INFO L225 Difference]: With dead ends: 464 [2022-11-02 20:08:58,704 INFO L226 Difference]: Without dead ends: 464 [2022-11-02 20:08:58,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=105, Invalid=540, Unknown=5, NotChecked=0, Total=650 [2022-11-02 20:08:58,705 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:58,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 141 Unchecked, 0.2s Time] [2022-11-02 20:08:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-11-02 20:08:58,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2022-11-02 20:08:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 456 states have (on average 3.1030701754385963) internal successors, (1415), 463 states have internal predecessors, (1415), 0 states have call successors, (0), 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 20:08:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1415 transitions. [2022-11-02 20:08:58,722 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1415 transitions. Word has length 13 [2022-11-02 20:08:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:58,723 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 1415 transitions. [2022-11-02 20:08:58,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 19 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1415 transitions. [2022-11-02 20:08:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:08:58,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:58,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:58,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:58,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:58,938 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:08:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:58,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1306196588, now seen corresponding path program 3 times [2022-11-02 20:08:58,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:58,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420554460] [2022-11-02 20:08:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:58,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:08:59,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:59,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420554460] [2022-11-02 20:08:59,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420554460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:08:59,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459065574] [2022-11-02 20:08:59,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:08:59,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:08:59,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:59,534 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:08:59,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:08:59,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-02 20:08:59,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:59,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:08:59,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:59,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:08:59,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:08:59,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-02 20:08:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:08:59,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:59,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459065574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:59,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:08:59,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2022-11-02 20:08:59,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341450730] [2022-11-02 20:08:59,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:59,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:08:59,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:59,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:08:59,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:08:59,947 INFO L87 Difference]: Start difference. First operand 464 states and 1415 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:00,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:00,278 INFO L93 Difference]: Finished difference Result 568 states and 1669 transitions. [2022-11-02 20:09:00,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:09:00,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:09:00,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:00,282 INFO L225 Difference]: With dead ends: 568 [2022-11-02 20:09:00,282 INFO L226 Difference]: Without dead ends: 568 [2022-11-02 20:09:00,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:09:00,283 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 39 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:00,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 5 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:09:00,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-02 20:09:00,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 465. [2022-11-02 20:09:00,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 457 states have (on average 3.098468271334792) internal successors, (1416), 464 states have internal predecessors, (1416), 0 states have call successors, (0), 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 20:09:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1416 transitions. [2022-11-02 20:09:00,306 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1416 transitions. Word has length 13 [2022-11-02 20:09:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:00,307 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 1416 transitions. [2022-11-02 20:09:00,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1416 transitions. [2022-11-02 20:09:00,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:09:00,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:00,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:00,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:00,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:00,525 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:09:00,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:00,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1306196545, now seen corresponding path program 2 times [2022-11-02 20:09:00,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:00,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025447515] [2022-11-02 20:09:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:00,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:09:01,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:01,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025447515] [2022-11-02 20:09:01,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025447515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:09:01,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624469552] [2022-11-02 20:09:01,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:09:01,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:01,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:01,154 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:09:01,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:09:01,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:09:01,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:09:01,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:09:01,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:01,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:01,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:09:01,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-02 20:09:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:09:01,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:01,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624469552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:01,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:09:01,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2022-11-02 20:09:01,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107314426] [2022-11-02 20:09:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:01,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:09:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:09:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:09:01,561 INFO L87 Difference]: Start difference. First operand 465 states and 1416 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:01,923 INFO L93 Difference]: Finished difference Result 533 states and 1575 transitions. [2022-11-02 20:09:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:09:01,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:09:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:01,927 INFO L225 Difference]: With dead ends: 533 [2022-11-02 20:09:01,927 INFO L226 Difference]: Without dead ends: 533 [2022-11-02 20:09:01,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:09:01,928 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 32 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:01,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 6 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:09:01,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-02 20:09:01,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 485. [2022-11-02 20:09:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 477 states have (on average 3.0817610062893084) internal successors, (1470), 484 states have internal predecessors, (1470), 0 states have call successors, (0), 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 20:09:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1470 transitions. [2022-11-02 20:09:01,948 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1470 transitions. Word has length 13 [2022-11-02 20:09:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:01,949 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 1470 transitions. [2022-11-02 20:09:01,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1470 transitions. [2022-11-02 20:09:01,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:09:01,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:01,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:02,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:02,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-02 20:09:02,166 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:09:02,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:02,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2044008725, now seen corresponding path program 3 times [2022-11-02 20:09:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:02,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810791266] [2022-11-02 20:09:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:02,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:09:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:02,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810791266] [2022-11-02 20:09:02,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810791266] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:09:02,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863828400] [2022-11-02 20:09:02,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:09:02,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:02,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:02,837 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:09:02,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:09:03,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-02 20:09:03,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:09:03,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:09:03,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:03,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:03,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:09:03,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-02 20:09:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:09:03,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:03,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863828400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:03,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:09:03,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2022-11-02 20:09:03,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685148085] [2022-11-02 20:09:03,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:03,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:09:03,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:03,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:09:03,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:09:03,309 INFO L87 Difference]: Start difference. First operand 485 states and 1470 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:03,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:03,636 INFO L93 Difference]: Finished difference Result 599 states and 1818 transitions. [2022-11-02 20:09:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:09:03,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:09:03,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:03,639 INFO L225 Difference]: With dead ends: 599 [2022-11-02 20:09:03,640 INFO L226 Difference]: Without dead ends: 599 [2022-11-02 20:09:03,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:09:03,641 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 45 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:03,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:09:03,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-11-02 20:09:03,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 477. [2022-11-02 20:09:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 469 states have (on average 3.074626865671642) internal successors, (1442), 476 states have internal predecessors, (1442), 0 states have call successors, (0), 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 20:09:03,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 1442 transitions. [2022-11-02 20:09:03,659 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 1442 transitions. Word has length 13 [2022-11-02 20:09:03,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:03,660 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 1442 transitions. [2022-11-02 20:09:03,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:03,660 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 1442 transitions. [2022-11-02 20:09:03,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:09:03,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:03,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:03,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:03,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-02 20:09:03,868 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:09:03,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:03,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2044008768, now seen corresponding path program 2 times [2022-11-02 20:09:03,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:03,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630666663] [2022-11-02 20:09:03,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:03,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:09:04,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:04,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630666663] [2022-11-02 20:09:04,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630666663] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:09:04,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915072604] [2022-11-02 20:09:04,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:09:04,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:04,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:04,477 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:09:04,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:09:04,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:09:04,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:09:04,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:09:04,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:04,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:04,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:09:04,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-02 20:09:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:09:04,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:04,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915072604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:04,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:09:04,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2022-11-02 20:09:04,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388989837] [2022-11-02 20:09:04,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:04,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:09:04,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:09:04,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:09:04,940 INFO L87 Difference]: Start difference. First operand 477 states and 1442 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:05,259 INFO L93 Difference]: Finished difference Result 509 states and 1534 transitions. [2022-11-02 20:09:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:09:05,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:09:05,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:05,263 INFO L225 Difference]: With dead ends: 509 [2022-11-02 20:09:05,263 INFO L226 Difference]: Without dead ends: 509 [2022-11-02 20:09:05,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:09:05,264 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 32 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:05,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 5 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:09:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-02 20:09:05,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 459. [2022-11-02 20:09:05,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 451 states have (on average 3.0864745011086474) internal successors, (1392), 458 states have internal predecessors, (1392), 0 states have call successors, (0), 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 20:09:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 1392 transitions. [2022-11-02 20:09:05,286 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 1392 transitions. Word has length 13 [2022-11-02 20:09:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:05,286 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 1392 transitions. [2022-11-02 20:09:05,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 1392 transitions. [2022-11-02 20:09:05,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:09:05,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:05,288 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:05,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:05,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:05,494 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:09:05,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:05,495 INFO L85 PathProgramCache]: Analyzing trace with hash -166379301, now seen corresponding path program 3 times [2022-11-02 20:09:05,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:05,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110097395] [2022-11-02 20:09:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:05,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:09:06,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:06,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110097395] [2022-11-02 20:09:06,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110097395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:09:06,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383283532] [2022-11-02 20:09:06,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:09:06,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:06,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:06,028 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:09:06,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 20:09:06,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-02 20:09:06,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:09:06,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:09:06,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:06,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-02 20:09:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:09:06,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:06,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383283532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:06,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:09:06,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2022-11-02 20:09:06,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734711365] [2022-11-02 20:09:06,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:06,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:09:06,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:09:06,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:09:06,346 INFO L87 Difference]: Start difference. First operand 459 states and 1392 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:06,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:06,520 INFO L93 Difference]: Finished difference Result 481 states and 1438 transitions. [2022-11-02 20:09:06,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:06,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 20:09:06,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:06,523 INFO L225 Difference]: With dead ends: 481 [2022-11-02 20:09:06,524 INFO L226 Difference]: Without dead ends: 481 [2022-11-02 20:09:06,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:09:06,525 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 33 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:06,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:09:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-11-02 20:09:06,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 415. [2022-11-02 20:09:06,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 407 states have (on average 3.0737100737100738) internal successors, (1251), 414 states have internal predecessors, (1251), 0 states have call successors, (0), 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 20:09:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 1251 transitions. [2022-11-02 20:09:06,540 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 1251 transitions. Word has length 14 [2022-11-02 20:09:06,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:06,541 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 1251 transitions. [2022-11-02 20:09:06,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:06,541 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 1251 transitions. [2022-11-02 20:09:06,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:09:06,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:06,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:06,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:06,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:06,758 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:09:06,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:06,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1735289422, now seen corresponding path program 1 times [2022-11-02 20:09:06,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:06,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619163809] [2022-11-02 20:09:06,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:06,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:09:07,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:07,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619163809] [2022-11-02 20:09:07,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619163809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:09:07,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145855136] [2022-11-02 20:09:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:07,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:07,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:07,475 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:09:07,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 20:09:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:07,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:09:07,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:07,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:07,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:09:08,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 20:09:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:09:08,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:08,150 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1100 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1100) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset))))) is different from false [2022-11-02 20:09:08,177 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:09:08,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2022-11-02 20:09:08,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-02 20:09:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:09:08,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145855136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:08,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:09:08,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2022-11-02 20:09:08,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153720095] [2022-11-02 20:09:08,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:08,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:09:08,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:09:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=353, Unknown=1, NotChecked=38, Total=462 [2022-11-02 20:09:08,404 INFO L87 Difference]: Start difference. First operand 415 states and 1251 transitions. Second operand has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 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 20:09:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:10,875 INFO L93 Difference]: Finished difference Result 1520 states and 4435 transitions. [2022-11-02 20:09:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:09:10,876 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 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 14 [2022-11-02 20:09:10,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:10,882 INFO L225 Difference]: With dead ends: 1520 [2022-11-02 20:09:10,883 INFO L226 Difference]: Without dead ends: 1492 [2022-11-02 20:09:10,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=271, Invalid=1372, Unknown=1, NotChecked=78, Total=1722 [2022-11-02 20:09:10,884 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 266 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:10,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 13 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1110 Invalid, 0 Unknown, 319 Unchecked, 1.2s Time] [2022-11-02 20:09:10,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-11-02 20:09:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 476. [2022-11-02 20:09:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 468 states have (on average 3.072649572649573) internal successors, (1438), 475 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1438 transitions. [2022-11-02 20:09:10,914 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1438 transitions. Word has length 14 [2022-11-02 20:09:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:10,914 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 1438 transitions. [2022-11-02 20:09:10,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 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 20:09:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1438 transitions. [2022-11-02 20:09:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:09:10,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:10,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:10,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:11,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-02 20:09:11,142 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:09:11,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:11,143 INFO L85 PathProgramCache]: Analyzing trace with hash -790527439, now seen corresponding path program 1 times [2022-11-02 20:09:11,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:11,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443423747] [2022-11-02 20:09:11,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:11,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:12,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:12,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443423747] [2022-11-02 20:09:12,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443423747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:09:12,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96353394] [2022-11-02 20:09:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:12,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:12,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:12,200 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:09:12,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 20:09:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:12,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:09:12,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:12,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:12,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:09:12,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 20:09:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:09:12,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:12,912 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1153 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1153) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset))))) is different from false [2022-11-02 20:09:12,936 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:09:12,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2022-11-02 20:09:12,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-02 20:09:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:09:13,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96353394] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:13,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:09:13,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 24 [2022-11-02 20:09:13,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066670816] [2022-11-02 20:09:13,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:13,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:09:13,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:13,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:09:13,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=518, Unknown=1, NotChecked=46, Total=650 [2022-11-02 20:09:13,212 INFO L87 Difference]: Start difference. First operand 476 states and 1438 transitions. Second operand has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 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 20:09:16,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:16,228 INFO L93 Difference]: Finished difference Result 1796 states and 5728 transitions. [2022-11-02 20:09:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:09:16,231 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 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 14 [2022-11-02 20:09:16,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:16,237 INFO L225 Difference]: With dead ends: 1796 [2022-11-02 20:09:16,238 INFO L226 Difference]: Without dead ends: 1796 [2022-11-02 20:09:16,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=306, Invalid=1951, Unknown=3, NotChecked=92, Total=2352 [2022-11-02 20:09:16,240 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 380 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 374 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:16,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 12 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1214 Invalid, 0 Unknown, 374 Unchecked, 1.4s Time] [2022-11-02 20:09:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2022-11-02 20:09:16,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 690. [2022-11-02 20:09:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 682 states have (on average 3.2346041055718473) internal successors, (2206), 689 states have internal predecessors, (2206), 0 states have call successors, (0), 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 20:09:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2206 transitions. [2022-11-02 20:09:16,277 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2206 transitions. Word has length 14 [2022-11-02 20:09:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:16,277 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 2206 transitions. [2022-11-02 20:09:16,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 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 20:09:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2206 transitions. [2022-11-02 20:09:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:09:16,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:16,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:16,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:16,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-02 20:09:16,494 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-02 20:09:16,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:16,495 INFO L85 PathProgramCache]: Analyzing trace with hash -790527482, now seen corresponding path program 1 times [2022-11-02 20:09:16,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:16,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437903138] [2022-11-02 20:09:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:16,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:09:17,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:17,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437903138] [2022-11-02 20:09:17,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437903138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:09:17,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631414290] [2022-11-02 20:09:17,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:17,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:09:17,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:17,420 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:09:17,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef4bab90-812c-4141-803a-7ca414c26a9c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-02 20:09:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:17,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:09:17,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:17,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:17,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:17,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:17,719 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-02 20:09:17,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-02 20:09:17,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:09:17,917 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:09:17,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:09:18,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:09:18,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:18,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:09:18,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:18,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:09:18,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:09:18,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:09:18,524 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-02 20:09:18,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-02 20:09:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:18,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:18,683 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1215 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1215) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 2147483648)) is different from false [2022-11-02 20:09:19,120 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:09:19,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-02 20:09:19,148 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:09:19,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9793 treesize of output 9541 [2022-11-02 20:09:19,264 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4763 treesize of output 4379 [2022-11-02 20:09:19,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9142 treesize of output 8950 [2022-11-02 20:09:19,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8950 treesize of output 7414 [2022-11-02 20:09:19,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7414 treesize of output 6646