./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/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_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/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_3e0091a1-038d-40a5-b6a1-d0dc290985b0/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 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f --- 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 20:33:18,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:33:18,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:33:18,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:33:18,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:33:18,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:33:18,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:33:18,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:33:18,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:33:18,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:33:18,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:33:18,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:33:18,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:33:18,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:33:18,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:33:18,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:33:18,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:33:18,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:33:18,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:33:18,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:33:18,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:33:18,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:33:18,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:33:18,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:33:18,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:33:18,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:33:18,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:33:18,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:33:18,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:33:18,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:33:18,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:33:18,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:33:18,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:33:18,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:33:18,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:33:18,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:33:18,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:33:18,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:33:18,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:33:18,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:33:18,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:33:18,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:33:18,938 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:33:18,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:33:18,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:33:18,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:33:18,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:33:18,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:33:18,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:33:18,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:33:18,941 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:33:18,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:33:18,942 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:33:18,942 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:33:18,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:33:18,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:33:18,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:33:18,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:33:18,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:33:18,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:33:18,943 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:33:18,944 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:33:18,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:33:18,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:33:18,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:33:18,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:33:18,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:33:18,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:33:18,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:18,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:33:18,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:33:18,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:33:18,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:33:18,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:33:18,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:33:18,947 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_3e0091a1-038d-40a5-b6a1-d0dc290985b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6727abf6d3311127e7c3f388ca276994a5a41bcb1f2faca3217c66ebe13b8b8f [2022-11-02 20:33:19,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:33:19,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:33:19,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:33:19,285 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:33:19,287 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:33:19,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-02 20:33:19,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/data/ec0e0c5e3/2966f9539d04496ebe541a63bc9bd8bb/FLAG100e6b934 [2022-11-02 20:33:20,053 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:33:20,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-11-02 20:33:20,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/data/ec0e0c5e3/2966f9539d04496ebe541a63bc9bd8bb/FLAG100e6b934 [2022-11-02 20:33:20,376 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/data/ec0e0c5e3/2966f9539d04496ebe541a63bc9bd8bb [2022-11-02 20:33:20,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:33:20,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:33:20,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:20,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:33:20,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:33:20,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75256e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20, skipping insertion in model container [2022-11-02 20:33:20,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:33:20,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:33:20,681 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_3e0091a1-038d-40a5-b6a1-d0dc290985b0/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-02 20:33:20,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:20,699 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:33:20,726 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_3e0091a1-038d-40a5-b6a1-d0dc290985b0/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-11-02 20:33:20,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:20,749 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:33:20,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20 WrapperNode [2022-11-02 20:33:20,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:20,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:20,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:33:20,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:33:20,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,826 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 353 [2022-11-02 20:33:20,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:20,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:33:20,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:33:20,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:33:20,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,893 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:33:20,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:33:20,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:33:20,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:33:20,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (1/1) ... [2022-11-02 20:33:20,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:20,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:20,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:33:20,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:33:20,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:33:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:33:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:33:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:33:20,994 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:33:20,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:33:20,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:33:20,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:33:20,995 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:33:20,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:33:20,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:33:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:33:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:33:20,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:33:20,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:33:20,998 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 20:33:21,166 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:33:21,169 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:33:22,048 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:33:22,073 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:33:22,073 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-02 20:33:22,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:22 BoogieIcfgContainer [2022-11-02 20:33:22,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:33:22,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:33:22,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:33:22,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:33:22,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:33:20" (1/3) ... [2022-11-02 20:33:22,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5ced7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:22, skipping insertion in model container [2022-11-02 20:33:22,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:20" (2/3) ... [2022-11-02 20:33:22,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5ced7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:22, skipping insertion in model container [2022-11-02 20:33:22,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:22" (3/3) ... [2022-11-02 20:33:22,092 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2022-11-02 20:33:22,103 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:33:22,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:33:22,117 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-02 20:33:22,117 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:33:22,312 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:33:22,364 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:33:22,382 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 472 places, 501 transitions, 1026 flow [2022-11-02 20:33:22,386 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 472 places, 501 transitions, 1026 flow [2022-11-02 20:33:22,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 472 places, 501 transitions, 1026 flow [2022-11-02 20:33:22,734 INFO L130 PetriNetUnfolder]: 39/498 cut-off events. [2022-11-02 20:33:22,736 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:33:22,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 39/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1047 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 303. Up to 2 conditions per place. [2022-11-02 20:33:22,778 INFO L118 LiptonReduction]: Number of co-enabled transitions 45042 [2022-11-02 20:34:18,511 INFO L133 LiptonReduction]: Checked pairs total: 47748 [2022-11-02 20:34:18,511 INFO L135 LiptonReduction]: Total number of compositions: 668 [2022-11-02 20:34:18,533 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 73 transitions, 170 flow [2022-11-02 20:34:18,850 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4804 states, 3578 states have (on average 4.577976523197317) internal successors, (16380), 4803 states have internal predecessors, (16380), 0 states have call successors, (0), 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 20:34:18,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:34:18,901 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;@9923f04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:34:18,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-11-02 20:34:18,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 4804 states, 3578 states have (on average 4.577976523197317) internal successors, (16380), 4803 states have internal predecessors, (16380), 0 states have call successors, (0), 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 20:34:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-02 20:34:18,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:18,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-02 20:34:18,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:18,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:18,947 INFO L85 PathProgramCache]: Analyzing trace with hash 66661, now seen corresponding path program 1 times [2022-11-02 20:34:18,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:18,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120781595] [2022-11-02 20:34:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:18,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:19,419 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 20:34:19,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:19,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120781595] [2022-11-02 20:34:19,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120781595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:19,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:19,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:34:19,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299793115] [2022-11-02 20:34:19,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:19,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:19,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:19,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:19,484 INFO L87 Difference]: Start difference. First operand has 4804 states, 3578 states have (on average 4.577976523197317) internal successors, (16380), 4803 states have internal predecessors, (16380), 0 states have call successors, (0), 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 20:34:19,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:19,940 INFO L93 Difference]: Finished difference Result 4389 states and 14825 transitions. [2022-11-02 20:34:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:19,944 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 20:34:19,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:20,066 INFO L225 Difference]: With dead ends: 4389 [2022-11-02 20:34:20,068 INFO L226 Difference]: Without dead ends: 4389 [2022-11-02 20:34:20,069 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 20:34:20,076 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 45 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:20,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:34:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-11-02 20:34:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 2201. [2022-11-02 20:34:20,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1751 states have (on average 4.238720731010851) internal successors, (7422), 2200 states have internal predecessors, (7422), 0 states have call successors, (0), 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 20:34:20,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 7422 transitions. [2022-11-02 20:34:20,374 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 7422 transitions. Word has length 2 [2022-11-02 20:34:20,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:20,376 INFO L495 AbstractCegarLoop]: Abstraction has 2201 states and 7422 transitions. [2022-11-02 20:34:20,376 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 20:34:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 7422 transitions. [2022-11-02 20:34:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:34:20,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:20,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:34:20,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:34:20,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:20,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:20,382 INFO L85 PathProgramCache]: Analyzing trace with hash 2068517, now seen corresponding path program 1 times [2022-11-02 20:34:20,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:20,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372276731] [2022-11-02 20:34:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:20,560 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 20:34:20,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:20,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372276731] [2022-11-02 20:34:20,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372276731] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:20,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572905560] [2022-11-02 20:34:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:20,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:20,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:20,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:20,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:34:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:20,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:34:20,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:20,790 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 20:34:20,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:20,829 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 20:34:20,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572905560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:20,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:34:20,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-02 20:34:20,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125075082] [2022-11-02 20:34:20,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:20,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:34:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:34:20,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:20,838 INFO L87 Difference]: Start difference. First operand 2201 states and 7422 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 20:34:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:21,700 INFO L93 Difference]: Finished difference Result 10962 states and 37061 transitions. [2022-11-02 20:34:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:21,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 3 [2022-11-02 20:34:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:21,806 INFO L225 Difference]: With dead ends: 10962 [2022-11-02 20:34:21,807 INFO L226 Difference]: Without dead ends: 10962 [2022-11-02 20:34:21,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 20:34:21,808 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 369 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:21,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 15 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:34:21,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10962 states. [2022-11-02 20:34:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10962 to 2210. [2022-11-02 20:34:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 1760 states have (on average 4.232386363636364) internal successors, (7449), 2209 states have internal predecessors, (7449), 0 states have call successors, (0), 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 20:34:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 7449 transitions. [2022-11-02 20:34:22,077 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 7449 transitions. Word has length 3 [2022-11-02 20:34:22,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:22,077 INFO L495 AbstractCegarLoop]: Abstraction has 2210 states and 7449 transitions. [2022-11-02 20:34:22,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 20:34:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 7449 transitions. [2022-11-02 20:34:22,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:34:22,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:22,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:34:22,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:22,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:22,300 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:22,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:22,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2068518, now seen corresponding path program 1 times [2022-11-02 20:34:22,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:22,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212177343] [2022-11-02 20:34:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:22,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:22,385 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 20:34:22,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:22,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212177343] [2022-11-02 20:34:22,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212177343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:22,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97303285] [2022-11-02 20:34:22,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:22,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:22,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:22,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:22,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:34:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:22,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:34:22,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:22,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:22,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97303285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:22,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:22,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-02 20:34:22,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213252928] [2022-11-02 20:34:22,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:22,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:34:22,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:34:22,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:22,552 INFO L87 Difference]: Start difference. First operand 2210 states and 7449 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 20:34:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:22,873 INFO L93 Difference]: Finished difference Result 4395 states and 14840 transitions. [2022-11-02 20:34:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:34:22,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 3 [2022-11-02 20:34:22,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:22,902 INFO L225 Difference]: With dead ends: 4395 [2022-11-02 20:34:22,902 INFO L226 Difference]: Without dead ends: 4395 [2022-11-02 20:34:22,903 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 20:34:22,904 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 96 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:22,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 9 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:34:22,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4395 states. [2022-11-02 20:34:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4395 to 2207. [2022-11-02 20:34:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1760 states have (on average 4.225568181818182) internal successors, (7437), 2206 states have internal predecessors, (7437), 0 states have call successors, (0), 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 20:34:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 7437 transitions. [2022-11-02 20:34:23,056 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 7437 transitions. Word has length 3 [2022-11-02 20:34:23,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:23,056 INFO L495 AbstractCegarLoop]: Abstraction has 2207 states and 7437 transitions. [2022-11-02 20:34:23,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 20:34:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 7437 transitions. [2022-11-02 20:34:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:34:23,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:23,062 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-02 20:34:23,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:23,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:23,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:23,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:23,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1495659621, now seen corresponding path program 2 times [2022-11-02 20:34:23,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:23,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841495287] [2022-11-02 20:34:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:23,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:23,416 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 20:34:23,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:23,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841495287] [2022-11-02 20:34:23,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841495287] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:23,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131205060] [2022-11-02 20:34:23,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:34:23,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:23,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:23,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:23,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:34:23,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:34:23,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:23,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:23,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:23,605 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 20:34:23,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:23,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131205060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:23,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:23,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-02 20:34:23,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138888480] [2022-11-02 20:34:23,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:23,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:23,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:23,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:23,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:23,612 INFO L87 Difference]: Start difference. First operand 2207 states and 7437 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 20:34:23,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:23,769 INFO L93 Difference]: Finished difference Result 2206 states and 7436 transitions. [2022-11-02 20:34:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:23,770 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 20:34:23,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:23,788 INFO L225 Difference]: With dead ends: 2206 [2022-11-02 20:34:23,788 INFO L226 Difference]: Without dead ends: 2206 [2022-11-02 20:34:23,788 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 20:34:23,791 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:23,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:23,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-11-02 20:34:23,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2202. [2022-11-02 20:34:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 1756 states have (on average 4.230068337129841) internal successors, (7428), 2201 states have internal predecessors, (7428), 0 states have call successors, (0), 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 20:34:23,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 7428 transitions. [2022-11-02 20:34:23,902 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 7428 transitions. Word has length 6 [2022-11-02 20:34:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:23,903 INFO L495 AbstractCegarLoop]: Abstraction has 2202 states and 7428 transitions. [2022-11-02 20:34:23,903 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 20:34:23,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 7428 transitions. [2022-11-02 20:34:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:34:23,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:23,904 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-02 20:34:23,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:24,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-02 20:34:24,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:24,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:24,120 INFO L85 PathProgramCache]: Analyzing trace with hash 924446499, now seen corresponding path program 1 times [2022-11-02 20:34:24,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:24,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329200246] [2022-11-02 20:34:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:24,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:34:24,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:24,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329200246] [2022-11-02 20:34:24,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329200246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:24,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:24,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:34:24,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035120563] [2022-11-02 20:34:24,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:24,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:34:24,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:24,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:34:24,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:34:24,360 INFO L87 Difference]: Start difference. First operand 2202 states and 7428 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:24,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:24,672 INFO L93 Difference]: Finished difference Result 3815 states and 12854 transitions. [2022-11-02 20:34:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:34:24,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:34:24,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:24,695 INFO L225 Difference]: With dead ends: 3815 [2022-11-02 20:34:24,696 INFO L226 Difference]: Without dead ends: 3815 [2022-11-02 20:34:24,697 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 20:34:24,698 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 85 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:24,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 9 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:34:24,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3815 states. [2022-11-02 20:34:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3815 to 3122. [2022-11-02 20:34:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3122 states, 2676 states have (on average 4.652092675635276) internal successors, (12449), 3121 states have internal predecessors, (12449), 0 states have call successors, (0), 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 20:34:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 12449 transitions. [2022-11-02 20:34:24,860 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 12449 transitions. Word has length 7 [2022-11-02 20:34:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:24,861 INFO L495 AbstractCegarLoop]: Abstraction has 3122 states and 12449 transitions. [2022-11-02 20:34:24,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 12449 transitions. [2022-11-02 20:34:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:34:24,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:24,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:24,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:34:24,863 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:24,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:24,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1055694498, now seen corresponding path program 1 times [2022-11-02 20:34:24,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:24,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392736536] [2022-11-02 20:34:24,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:24,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:24,976 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 20:34:24,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:24,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392736536] [2022-11-02 20:34:24,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392736536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:24,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:24,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:34:24,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432814274] [2022-11-02 20:34:24,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:24,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:24,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:24,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:24,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:24,980 INFO L87 Difference]: Start difference. First operand 3122 states and 12449 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 20:34:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:25,204 INFO L93 Difference]: Finished difference Result 4709 states and 19420 transitions. [2022-11-02 20:34:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:25,204 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 20:34:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:25,284 INFO L225 Difference]: With dead ends: 4709 [2022-11-02 20:34:25,284 INFO L226 Difference]: Without dead ends: 4709 [2022-11-02 20:34:25,284 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 20:34:25,285 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 40 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:25,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 5 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2022-11-02 20:34:25,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 3613. [2022-11-02 20:34:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3167 states have (on average 5.123460688348595) internal successors, (16226), 3612 states have internal predecessors, (16226), 0 states have call successors, (0), 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 20:34:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 16226 transitions. [2022-11-02 20:34:25,434 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 16226 transitions. Word has length 7 [2022-11-02 20:34:25,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:25,435 INFO L495 AbstractCegarLoop]: Abstraction has 3613 states and 16226 transitions. [2022-11-02 20:34:25,436 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 20:34:25,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 16226 transitions. [2022-11-02 20:34:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:34:25,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:25,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:25,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:34:25,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:25,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1055694499, now seen corresponding path program 1 times [2022-11-02 20:34:25,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:25,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338171277] [2022-11-02 20:34:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:25,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:25,568 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 20:34:25,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:25,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338171277] [2022-11-02 20:34:25,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338171277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:25,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:25,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:34:25,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695153977] [2022-11-02 20:34:25,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:25,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:25,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:25,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:25,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:25,571 INFO L87 Difference]: Start difference. First operand 3613 states and 16226 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 20:34:25,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:25,824 INFO L93 Difference]: Finished difference Result 4709 states and 18806 transitions. [2022-11-02 20:34:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:25,825 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 20:34:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:25,863 INFO L225 Difference]: With dead ends: 4709 [2022-11-02 20:34:25,863 INFO L226 Difference]: Without dead ends: 4709 [2022-11-02 20:34:25,863 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 20:34:25,864 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:25,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 7 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:25,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2022-11-02 20:34:26,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 3613. [2022-11-02 20:34:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3167 states have (on average 4.929586359330597) internal successors, (15612), 3612 states have internal predecessors, (15612), 0 states have call successors, (0), 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 20:34:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 15612 transitions. [2022-11-02 20:34:26,191 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 15612 transitions. Word has length 7 [2022-11-02 20:34:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:26,191 INFO L495 AbstractCegarLoop]: Abstraction has 3613 states and 15612 transitions. [2022-11-02 20:34:26,191 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 20:34:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 15612 transitions. [2022-11-02 20:34:26,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:34:26,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:26,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:26,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:34:26,193 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:26,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:26,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1055694501, now seen corresponding path program 1 times [2022-11-02 20:34:26,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:26,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045609018] [2022-11-02 20:34:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:26,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:26,395 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 20:34:26,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:26,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045609018] [2022-11-02 20:34:26,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045609018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:26,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:26,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:34:26,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038222083] [2022-11-02 20:34:26,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:26,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:26,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:26,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:26,398 INFO L87 Difference]: Start difference. First operand 3613 states and 15612 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:26,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:26,861 INFO L93 Difference]: Finished difference Result 3192 states and 11343 transitions. [2022-11-02 20:34:26,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:34:26,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:34:26,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:26,884 INFO L225 Difference]: With dead ends: 3192 [2022-11-02 20:34:26,884 INFO L226 Difference]: Without dead ends: 3192 [2022-11-02 20:34:26,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:26,886 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 90 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:26,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 13 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:34:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2022-11-02 20:34:26,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 2981. [2022-11-02 20:34:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2535 states have (on average 4.410256410256411) internal successors, (11180), 2980 states have internal predecessors, (11180), 0 states have call successors, (0), 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 20:34:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 11180 transitions. [2022-11-02 20:34:26,999 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 11180 transitions. Word has length 7 [2022-11-02 20:34:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:26,999 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 11180 transitions. [2022-11-02 20:34:27,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:27,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 11180 transitions. [2022-11-02 20:34:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:34:27,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:27,002 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-02 20:34:27,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:34:27,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:27,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:27,004 INFO L85 PathProgramCache]: Analyzing trace with hash 318552931, now seen corresponding path program 1 times [2022-11-02 20:34:27,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:27,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137931138] [2022-11-02 20:34:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:27,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:34:27,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:27,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137931138] [2022-11-02 20:34:27,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137931138] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:27,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816241079] [2022-11-02 20:34:27,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:27,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:27,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:27,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:27,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:34:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:27,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:34:27,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:34:27,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:34:27,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816241079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:27,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:34:27,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2022-11-02 20:34:27,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141956687] [2022-11-02 20:34:27,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:27,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:34:27,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:27,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:34:27,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:34:27,536 INFO L87 Difference]: Start difference. First operand 2981 states and 11180 transitions. Second operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 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 20:34:28,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:28,281 INFO L93 Difference]: Finished difference Result 6875 states and 25079 transitions. [2022-11-02 20:34:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:34:28,281 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 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 20:34:28,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:28,320 INFO L225 Difference]: With dead ends: 6875 [2022-11-02 20:34:28,320 INFO L226 Difference]: Without dead ends: 6875 [2022-11-02 20:34:28,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:34:28,321 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 680 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:28,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 33 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:34:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6875 states. [2022-11-02 20:34:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6875 to 3975. [2022-11-02 20:34:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 3529 states have (on average 4.773306885803343) internal successors, (16845), 3974 states have internal predecessors, (16845), 0 states have call successors, (0), 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 20:34:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 16845 transitions. [2022-11-02 20:34:28,562 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 16845 transitions. Word has length 8 [2022-11-02 20:34:28,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:28,563 INFO L495 AbstractCegarLoop]: Abstraction has 3975 states and 16845 transitions. [2022-11-02 20:34:28,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 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 20:34:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 16845 transitions. [2022-11-02 20:34:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:34:28,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:28,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:28,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:28,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:28,791 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:28,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:28,792 INFO L85 PathProgramCache]: Analyzing trace with hash 929806161, now seen corresponding path program 1 times [2022-11-02 20:34:28,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:28,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93676103] [2022-11-02 20:34:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:28,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:28,880 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 20:34:28,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:28,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93676103] [2022-11-02 20:34:28,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93676103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:28,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:28,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:34:28,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821326020] [2022-11-02 20:34:28,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:28,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:34:28,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:28,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:34:28,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:34:28,883 INFO L87 Difference]: Start difference. First operand 3975 states and 16845 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:29,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:29,141 INFO L93 Difference]: Finished difference Result 6653 states and 28610 transitions. [2022-11-02 20:34:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:34:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:29,190 INFO L225 Difference]: With dead ends: 6653 [2022-11-02 20:34:29,190 INFO L226 Difference]: Without dead ends: 6653 [2022-11-02 20:34:29,191 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 20:34:29,191 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 37 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:29,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 7 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:29,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6653 states. [2022-11-02 20:34:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6653 to 4527. [2022-11-02 20:34:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4527 states, 4081 states have (on average 5.3097280078412155) internal successors, (21669), 4526 states have internal predecessors, (21669), 0 states have call successors, (0), 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 20:34:29,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4527 states to 4527 states and 21669 transitions. [2022-11-02 20:34:29,502 INFO L78 Accepts]: Start accepts. Automaton has 4527 states and 21669 transitions. Word has length 9 [2022-11-02 20:34:29,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:29,502 INFO L495 AbstractCegarLoop]: Abstraction has 4527 states and 21669 transitions. [2022-11-02 20:34:29,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:29,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4527 states and 21669 transitions. [2022-11-02 20:34:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:34:29,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:29,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:29,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:34:29,504 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:29,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:29,505 INFO L85 PathProgramCache]: Analyzing trace with hash 929806136, now seen corresponding path program 1 times [2022-11-02 20:34:29,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:29,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252840562] [2022-11-02 20:34:29,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:29,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:29,631 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 20:34:29,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:29,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252840562] [2022-11-02 20:34:29,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252840562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:29,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:29,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:34:29,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729859132] [2022-11-02 20:34:29,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:29,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:29,634 INFO L87 Difference]: Start difference. First operand 4527 states and 21669 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:29,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:29,966 INFO L93 Difference]: Finished difference Result 4414 states and 20838 transitions. [2022-11-02 20:34:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:34:29,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:34:29,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:29,989 INFO L225 Difference]: With dead ends: 4414 [2022-11-02 20:34:29,989 INFO L226 Difference]: Without dead ends: 4414 [2022-11-02 20:34:29,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:29,990 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 70 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:29,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 13 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:34:30,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4414 states. [2022-11-02 20:34:30,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4414 to 4349. [2022-11-02 20:34:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4349 states, 3903 states have (on average 5.3095055085831415) internal successors, (20723), 4348 states have internal predecessors, (20723), 0 states have call successors, (0), 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 20:34:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4349 states to 4349 states and 20723 transitions. [2022-11-02 20:34:30,237 INFO L78 Accepts]: Start accepts. Automaton has 4349 states and 20723 transitions. Word has length 9 [2022-11-02 20:34:30,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:30,238 INFO L495 AbstractCegarLoop]: Abstraction has 4349 states and 20723 transitions. [2022-11-02 20:34:30,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 4349 states and 20723 transitions. [2022-11-02 20:34:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:34:30,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:30,249 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1] [2022-11-02 20:34:30,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:34:30,250 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:30,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:30,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1284278493, now seen corresponding path program 2 times [2022-11-02 20:34:30,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:30,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682659855] [2022-11-02 20:34:30,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:30,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:34:30,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:30,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682659855] [2022-11-02 20:34:30,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682659855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:30,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405635025] [2022-11-02 20:34:30,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:34:30,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:30,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:30,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:30,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:34:30,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:34:30,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:30,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:34:30,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:34:30,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:30,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405635025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:30,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:34:30,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-11-02 20:34:30,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852951806] [2022-11-02 20:34:30,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:30,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:34:30,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:30,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:34:30,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:34:30,648 INFO L87 Difference]: Start difference. First operand 4349 states and 20723 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:30,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:30,777 INFO L93 Difference]: Finished difference Result 3685 states and 18071 transitions. [2022-11-02 20:34:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:34:30,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:34:30,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:30,796 INFO L225 Difference]: With dead ends: 3685 [2022-11-02 20:34:30,796 INFO L226 Difference]: Without dead ends: 3685 [2022-11-02 20:34:30,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:34:30,797 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:30,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 3 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:30,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2022-11-02 20:34:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 2309. [2022-11-02 20:34:30,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2018 states have (on average 4.744796828543112) internal successors, (9575), 2308 states have internal predecessors, (9575), 0 states have call successors, (0), 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 20:34:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 9575 transitions. [2022-11-02 20:34:30,877 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 9575 transitions. Word has length 9 [2022-11-02 20:34:30,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:30,878 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 9575 transitions. [2022-11-02 20:34:30,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:30,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 9575 transitions. [2022-11-02 20:34:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:34:30,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:30,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:30,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:31,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:31,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:31,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:31,105 INFO L85 PathProgramCache]: Analyzing trace with hash 971120088, now seen corresponding path program 1 times [2022-11-02 20:34:31,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:31,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198838746] [2022-11-02 20:34:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:31,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:31,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:31,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198838746] [2022-11-02 20:34:31,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198838746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:31,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676728244] [2022-11-02 20:34:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:31,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:31,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:31,896 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:31,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:34:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:32,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:34:32,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:32,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:32,168 INFO L356 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2022-11-02 20:34:32,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 15 treesize of output 39 [2022-11-02 20:34:32,246 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 20:34:32,308 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:34:32,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:34:32,353 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 14 treesize of output 16 [2022-11-02 20:34:32,397 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:34:32,397 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 20:34:32,440 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 14 treesize of output 16 [2022-11-02 20:34:32,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:32,478 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 14 treesize of output 16 [2022-11-02 20:34:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:32,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:32,550 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_444 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_444) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2022-11-02 20:34:32,558 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_443 (Array Int Int)) (v_ArrVal_444 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_443) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_444) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2022-11-02 20:34:32,777 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:34:32,778 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 28 treesize of output 29 [2022-11-02 20:34:32,808 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:34:32,808 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 245 treesize of output 239 [2022-11-02 20:34:32,829 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 226 treesize of output 218 [2022-11-02 20:34:32,847 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 218 treesize of output 202 [2022-11-02 20:34:32,862 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 102 treesize of output 98 [2022-11-02 20:34:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 20:34:33,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676728244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:33,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:34:33,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-11-02 20:34:33,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775558562] [2022-11-02 20:34:33,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:33,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:34:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:33,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:34:33,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=369, Unknown=5, NotChecked=82, Total=552 [2022-11-02 20:34:33,215 INFO L87 Difference]: Start difference. First operand 2309 states and 9575 transitions. Second operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 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 20:34:34,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:34,056 INFO L93 Difference]: Finished difference Result 3111 states and 11970 transitions. [2022-11-02 20:34:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:34:34,057 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 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 20:34:34,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:34,074 INFO L225 Difference]: With dead ends: 3111 [2022-11-02 20:34:34,074 INFO L226 Difference]: Without dead ends: 3111 [2022-11-02 20:34:34,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=427, Unknown=5, NotChecked=90, Total=650 [2022-11-02 20:34:34,076 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 54 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 386 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:34,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 84 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 739 Invalid, 0 Unknown, 386 Unchecked, 0.7s Time] [2022-11-02 20:34:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2022-11-02 20:34:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 2309. [2022-11-02 20:34:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2018 states have (on average 4.744301288404361) internal successors, (9574), 2308 states have internal predecessors, (9574), 0 states have call successors, (0), 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 20:34:34,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 9574 transitions. [2022-11-02 20:34:34,187 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 9574 transitions. Word has length 10 [2022-11-02 20:34:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:34,188 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 9574 transitions. [2022-11-02 20:34:34,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 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 20:34:34,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 9574 transitions. [2022-11-02 20:34:34,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:34:34,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:34,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:34,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:34,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:34,415 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:34,416 INFO L85 PathProgramCache]: Analyzing trace with hash 971119965, now seen corresponding path program 1 times [2022-11-02 20:34:34,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:34,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865939945] [2022-11-02 20:34:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:34,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:35,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:35,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865939945] [2022-11-02 20:34:35,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865939945] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:35,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851355060] [2022-11-02 20:34:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:35,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:35,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:35,253 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:35,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:34:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:35,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-02 20:34:35,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:35,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:35,535 INFO L356 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2022-11-02 20:34:35,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 15 treesize of output 39 [2022-11-02 20:34:35,592 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 20:34:35,665 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:34:35,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:34:35,717 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 20:34:35,785 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:34:35,785 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 20:34:35,842 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 20:34:35,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:35,897 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 20:34:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:35,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:35,992 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_506 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_506) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-02 20:34:36,001 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_506 (Array Int Int)) (v_ArrVal_505 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_505) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_506) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-02 20:34:36,176 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:34:36,176 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 30 treesize of output 31 [2022-11-02 20:34:36,192 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:34:36,193 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 279 treesize of output 273 [2022-11-02 20:34:36,204 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 258 treesize of output 242 [2022-11-02 20:34:36,215 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 242 treesize of output 234 [2022-11-02 20:34:36,228 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 119 treesize of output 115 [2022-11-02 20:34:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 20:34:36,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851355060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:36,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:34:36,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-11-02 20:34:36,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730554775] [2022-11-02 20:34:36,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:36,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:34:36,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:36,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:34:36,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=369, Unknown=5, NotChecked=82, Total=552 [2022-11-02 20:34:36,582 INFO L87 Difference]: Start difference. First operand 2309 states and 9574 transitions. Second operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 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 20:34:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:37,227 INFO L93 Difference]: Finished difference Result 3110 states and 11968 transitions. [2022-11-02 20:34:37,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:34:37,227 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 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 20:34:37,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:37,245 INFO L225 Difference]: With dead ends: 3110 [2022-11-02 20:34:37,245 INFO L226 Difference]: Without dead ends: 3110 [2022-11-02 20:34:37,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=427, Unknown=5, NotChecked=90, Total=650 [2022-11-02 20:34:37,246 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 67 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:37,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 52 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 340 Invalid, 0 Unknown, 347 Unchecked, 0.5s Time] [2022-11-02 20:34:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2022-11-02 20:34:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 2309. [2022-11-02 20:34:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2018 states have (on average 4.7438057482656095) internal successors, (9573), 2308 states have internal predecessors, (9573), 0 states have call successors, (0), 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 20:34:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 9573 transitions. [2022-11-02 20:34:37,336 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 9573 transitions. Word has length 10 [2022-11-02 20:34:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:37,337 INFO L495 AbstractCegarLoop]: Abstraction has 2309 states and 9573 transitions. [2022-11-02 20:34:37,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 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 20:34:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 9573 transitions. [2022-11-02 20:34:37,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:34:37,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:37,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:37,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:37,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:34:37,556 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:37,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:37,556 INFO L85 PathProgramCache]: Analyzing trace with hash 209608649, now seen corresponding path program 1 times [2022-11-02 20:34:37,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:37,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736986823] [2022-11-02 20:34:37,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:37,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:37,786 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 20:34:37,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:37,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736986823] [2022-11-02 20:34:37,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736986823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:37,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:37,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:34:37,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720173172] [2022-11-02 20:34:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:37,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:37,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:37,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:37,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:37,788 INFO L87 Difference]: Start difference. First operand 2309 states and 9573 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 20:34:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:38,047 INFO L93 Difference]: Finished difference Result 2192 states and 9165 transitions. [2022-11-02 20:34:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:34:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 20:34:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:38,059 INFO L225 Difference]: With dead ends: 2192 [2022-11-02 20:34:38,059 INFO L226 Difference]: Without dead ends: 2192 [2022-11-02 20:34:38,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:34:38,060 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 48 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:38,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 13 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2022-11-02 20:34:38,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2183. [2022-11-02 20:34:38,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2183 states, 1892 states have (on average 4.83985200845666) internal successors, (9157), 2182 states have internal predecessors, (9157), 0 states have call successors, (0), 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 20:34:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 9157 transitions. [2022-11-02 20:34:38,133 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 9157 transitions. Word has length 11 [2022-11-02 20:34:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:38,134 INFO L495 AbstractCegarLoop]: Abstraction has 2183 states and 9157 transitions. [2022-11-02 20:34:38,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 20:34:38,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 9157 transitions. [2022-11-02 20:34:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:34:38,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:38,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:38,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:34:38,135 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash 39953784, now seen corresponding path program 1 times [2022-11-02 20:34:38,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:38,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923319426] [2022-11-02 20:34:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:38,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:34:38,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:38,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923319426] [2022-11-02 20:34:38,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923319426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:38,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158046967] [2022-11-02 20:34:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:38,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:38,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:38,353 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:38,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:34:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:38,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:34:38,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:34:38,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:34:38,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158046967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:38,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:34:38,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-02 20:34:38,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606171055] [2022-11-02 20:34:38,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:38,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:34:38,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:38,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:34:38,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:34:38,731 INFO L87 Difference]: Start difference. First operand 2183 states and 9157 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:39,680 INFO L93 Difference]: Finished difference Result 4000 states and 15918 transitions. [2022-11-02 20:34:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:34:39,681 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:34:39,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:39,701 INFO L225 Difference]: With dead ends: 4000 [2022-11-02 20:34:39,702 INFO L226 Difference]: Without dead ends: 4000 [2022-11-02 20:34:39,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:34:39,703 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 401 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:39,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 49 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:34:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2022-11-02 20:34:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 2785. [2022-11-02 20:34:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2494 states have (on average 4.872493985565357) internal successors, (12152), 2784 states have internal predecessors, (12152), 0 states have call successors, (0), 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 20:34:39,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 12152 transitions. [2022-11-02 20:34:39,812 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 12152 transitions. Word has length 11 [2022-11-02 20:34:39,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:39,813 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 12152 transitions. [2022-11-02 20:34:39,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:39,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 12152 transitions. [2022-11-02 20:34:39,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:34:39,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:39,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:39,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:40,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:34:40,039 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:40,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:40,040 INFO L85 PathProgramCache]: Analyzing trace with hash 39946874, now seen corresponding path program 1 times [2022-11-02 20:34:40,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:40,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293669843] [2022-11-02 20:34:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:40,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:40,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293669843] [2022-11-02 20:34:40,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293669843] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815595696] [2022-11-02 20:34:40,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:40,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:40,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:40,812 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:40,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:34:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:41,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:34:41,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:41,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:41,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:41,078 INFO L356 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-02 20:34:41,078 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 20:34:41,138 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 20:34:41,210 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:34:41,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:34:41,275 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 14 treesize of output 16 [2022-11-02 20:34:41,330 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:34:41,331 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 20:34:41,375 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 14 treesize of output 16 [2022-11-02 20:34:41,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:41,429 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 14 treesize of output 16 [2022-11-02 20:34:41,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:41,517 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 14 treesize of output 16 [2022-11-02 20:34:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:41,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:41,567 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_649 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_649) c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) 4294967296)) is different from false [2022-11-02 20:34:41,575 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_649 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_649) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2022-11-02 20:34:41,589 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_649 (Array Int Int)) (v_ArrVal_648 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_648) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_649) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2022-11-02 20:34:41,599 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_647 (Array Int Int)) (v_ArrVal_649 (Array Int Int)) (v_ArrVal_648 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_647) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_648) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_649) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2022-11-02 20:34:41,784 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:34:41,784 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 20:34:41,802 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:34:41,802 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 969 treesize of output 955 [2022-11-02 20:34:41,831 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 942 treesize of output 910 [2022-11-02 20:34:41,855 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 910 treesize of output 846 [2022-11-02 20:34:41,882 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 846 treesize of output 838 [2022-11-02 20:34:41,904 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 838 treesize of output 822 [2022-11-02 20:34:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 20:34:42,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815595696] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:42,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:34:42,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2022-11-02 20:34:42,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547155950] [2022-11-02 20:34:42,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:42,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:34:42,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:42,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:34:42,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=455, Unknown=7, NotChecked=188, Total=756 [2022-11-02 20:34:42,601 INFO L87 Difference]: Start difference. First operand 2785 states and 12152 transitions. Second operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 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 20:34:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:43,414 INFO L93 Difference]: Finished difference Result 3573 states and 14486 transitions. [2022-11-02 20:34:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:34:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 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 20:34:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:43,430 INFO L225 Difference]: With dead ends: 3573 [2022-11-02 20:34:43,430 INFO L226 Difference]: Without dead ends: 3573 [2022-11-02 20:34:43,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=519, Unknown=7, NotChecked=204, Total=870 [2022-11-02 20:34:43,431 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 79 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 608 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:43,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 88 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 647 Invalid, 0 Unknown, 608 Unchecked, 0.7s Time] [2022-11-02 20:34:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2022-11-02 20:34:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 2785. [2022-11-02 20:34:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2494 states have (on average 4.864474739374499) internal successors, (12132), 2784 states have internal predecessors, (12132), 0 states have call successors, (0), 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 20:34:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 12132 transitions. [2022-11-02 20:34:43,531 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 12132 transitions. Word has length 11 [2022-11-02 20:34:43,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:43,531 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 12132 transitions. [2022-11-02 20:34:43,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 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 20:34:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 12132 transitions. [2022-11-02 20:34:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:34:43,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:43,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:43,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:43,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:34:43,743 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:43,744 INFO L85 PathProgramCache]: Analyzing trace with hash 39946751, now seen corresponding path program 1 times [2022-11-02 20:34:43,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:43,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239617260] [2022-11-02 20:34:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:44,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:44,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239617260] [2022-11-02 20:34:44,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239617260] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:44,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112186113] [2022-11-02 20:34:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:44,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:44,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:44,371 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:44,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:34:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:44,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:34:44,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:44,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:44,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:44,641 INFO L356 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-02 20:34:44,642 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 20:34:44,707 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 20:34:44,771 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:34:44,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:34:44,819 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 20:34:44,876 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:34:44,876 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 20:34:44,924 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 20:34:44,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:44,966 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 20:34:45,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:45,051 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 20:34:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:45,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:45,105 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_716 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_716) c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) 9223372039002259456))) is different from false [2022-11-02 20:34:45,112 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_716 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_716) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-02 20:34:45,122 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_715 (Array Int Int)) (v_ArrVal_716 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_715) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_716) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-02 20:34:45,130 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_715 (Array Int Int)) (v_ArrVal_714 (Array Int Int)) (v_ArrVal_716 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_714) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_715) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_716) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-02 20:34:45,297 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:34:45,297 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 33 treesize of output 34 [2022-11-02 20:34:45,314 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:34:45,316 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 2195 treesize of output 2165 [2022-11-02 20:34:45,343 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 2150 treesize of output 2134 [2022-11-02 20:34:45,369 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 2134 treesize of output 2070 [2022-11-02 20:34:45,399 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 1051 treesize of output 1019 [2022-11-02 20:34:45,426 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 2038 treesize of output 1910 [2022-11-02 20:34:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 20:34:53,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112186113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:53,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:34:53,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2022-11-02 20:34:53,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762472903] [2022-11-02 20:34:53,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:53,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 20:34:53,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:53,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 20:34:53,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=455, Unknown=7, NotChecked=188, Total=756 [2022-11-02 20:34:53,512 INFO L87 Difference]: Start difference. First operand 2785 states and 12132 transitions. Second operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 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 20:34:54,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:54,506 INFO L93 Difference]: Finished difference Result 3563 states and 14442 transitions. [2022-11-02 20:34:54,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:34:54,507 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 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 20:34:54,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:54,520 INFO L225 Difference]: With dead ends: 3563 [2022-11-02 20:34:54,520 INFO L226 Difference]: Without dead ends: 3563 [2022-11-02 20:34:54,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=519, Unknown=7, NotChecked=204, Total=870 [2022-11-02 20:34:54,521 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 56 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 608 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:54,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 98 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 789 Invalid, 0 Unknown, 608 Unchecked, 0.9s Time] [2022-11-02 20:34:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2022-11-02 20:34:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 2785. [2022-11-02 20:34:54,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2494 states have (on average 4.856455493183641) internal successors, (12112), 2784 states have internal predecessors, (12112), 0 states have call successors, (0), 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 20:34:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 12112 transitions. [2022-11-02 20:34:54,625 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 12112 transitions. Word has length 11 [2022-11-02 20:34:54,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:54,625 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 12112 transitions. [2022-11-02 20:34:54,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 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 20:34:54,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 12112 transitions. [2022-11-02 20:34:54,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:34:54,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:54,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:54,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:54,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:34:54,839 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:34:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:54,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1258173867, now seen corresponding path program 1 times [2022-11-02 20:34:54,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:54,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212938786] [2022-11-02 20:34:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:54,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:55,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:55,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212938786] [2022-11-02 20:34:55,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212938786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:34:55,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039534721] [2022-11-02 20:34:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:55,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:34:55,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:55,440 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:34:55,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:34:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:55,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:34:55,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:55,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20:34:55,723 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 20:34:55,778 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:34:55,778 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 20:34:55,815 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 14 treesize of output 16 [2022-11-02 20:34:55,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:55,847 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 14 treesize of output 16 [2022-11-02 20:34:55,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:34:55,887 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 14 treesize of output 16 [2022-11-02 20:34:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:34:55,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:55,960 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_778 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_778) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-11-02 20:34:55,969 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_777 (Array Int Int)) (v_ArrVal_778 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_777) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_778) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-11-02 20:34:55,977 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_777 (Array Int Int)) (v_ArrVal_776 (Array Int Int)) (v_ArrVal_778 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_776) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_777) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_778) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-11-02 20:34:56,021 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:34:56,022 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 28 treesize of output 29 [2022-11-02 20:34:56,036 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:34:56,036 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 1953 treesize of output 1891 [2022-11-02 20:34:56,057 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 1878 treesize of output 1750 [2022-11-02 20:34:56,081 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 1750 treesize of output 1718 [2022-11-02 20:34:56,104 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 1718 treesize of output 1654 [2022-11-02 20:35:05,433 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:35:05,434 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 29 treesize of output 34 [2022-11-02 20:35:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-02 20:35:05,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039534721] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:05,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:35:05,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-11-02 20:35:05,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853600716] [2022-11-02 20:35:05,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:05,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:35:05,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:35:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=311, Unknown=3, NotChecked=114, Total=506 [2022-11-02 20:35:05,481 INFO L87 Difference]: Start difference. First operand 2785 states and 12112 transitions. Second operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 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 20:35:06,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:06,261 INFO L93 Difference]: Finished difference Result 3966 states and 15505 transitions. [2022-11-02 20:35:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:35:06,262 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:35:06,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:06,275 INFO L225 Difference]: With dead ends: 3966 [2022-11-02 20:35:06,275 INFO L226 Difference]: Without dead ends: 3966 [2022-11-02 20:35:06,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=569, Unknown=3, NotChecked=156, Total=870 [2022-11-02 20:35:06,275 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 120 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 459 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:06,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 55 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 487 Invalid, 0 Unknown, 459 Unchecked, 0.5s Time] [2022-11-02 20:35:06,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3966 states. [2022-11-02 20:35:06,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3966 to 2806. [2022-11-02 20:35:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2515 states have (on average 4.842544731610338) internal successors, (12179), 2805 states have internal predecessors, (12179), 0 states have call successors, (0), 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 20:35:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 12179 transitions. [2022-11-02 20:35:06,384 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 12179 transitions. Word has length 12 [2022-11-02 20:35:06,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:06,384 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 12179 transitions. [2022-11-02 20:35:06,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 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 20:35:06,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 12179 transitions. [2022-11-02 20:35:06,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:35:06,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:06,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:06,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:06,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:06,601 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:35:06,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1258173888, now seen corresponding path program 1 times [2022-11-02 20:35:06,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:06,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592880534] [2022-11-02 20:35:06,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:06,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:35:06,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:06,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592880534] [2022-11-02 20:35:06,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592880534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:06,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:06,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:35:06,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774863251] [2022-11-02 20:35:06,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:06,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:35:06,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:35:06,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:35:06,731 INFO L87 Difference]: Start difference. First operand 2806 states and 12179 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 20:35:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:06,914 INFO L93 Difference]: Finished difference Result 3702 states and 14142 transitions. [2022-11-02 20:35:06,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:35:06,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:35:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:06,948 INFO L225 Difference]: With dead ends: 3702 [2022-11-02 20:35:06,948 INFO L226 Difference]: Without dead ends: 3596 [2022-11-02 20:35:06,948 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 20:35:06,949 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:06,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 5 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:35:06,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2022-11-02 20:35:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 2790. [2022-11-02 20:35:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2499 states have (on average 4.705482192877151) internal successors, (11759), 2789 states have internal predecessors, (11759), 0 states have call successors, (0), 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 20:35:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 11759 transitions. [2022-11-02 20:35:07,056 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 11759 transitions. Word has length 12 [2022-11-02 20:35:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:07,056 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 11759 transitions. [2022-11-02 20:35:07,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 20:35:07,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 11759 transitions. [2022-11-02 20:35:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:35:07,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:07,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:07,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:35:07,058 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:35:07,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1258173760, now seen corresponding path program 1 times [2022-11-02 20:35:07,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:07,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560097914] [2022-11-02 20:35:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:35:07,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:07,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560097914] [2022-11-02 20:35:07,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560097914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:07,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533891933] [2022-11-02 20:35:07,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:07,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:07,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:07,622 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:35:07,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:35:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:07,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 20:35:07,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:07,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20:35:07,914 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 20:35:07,968 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:35:07,968 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 20:35:08,022 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 20:35:08,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:35:08,065 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 20:35:08,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:35:08,115 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 20:35:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:35:08,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:08,205 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_868 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_868) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2022-11-02 20:35:08,216 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_867 (Array Int Int)) (v_ArrVal_868 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_867) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_868) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2022-11-02 20:35:08,224 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_867 (Array Int Int)) (v_ArrVal_866 (Array Int Int)) (v_ArrVal_868 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_866) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_867) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_868) c_~B~0.base) c_~B~0.offset)))) is different from false [2022-11-02 20:35:08,281 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:35:08,282 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 30 treesize of output 31 [2022-11-02 20:35:08,295 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:35:08,295 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 279 treesize of output 273 [2022-11-02 20:35:08,304 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 258 treesize of output 242 [2022-11-02 20:35:08,315 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 121 treesize of output 117 [2022-11-02 20:35:08,323 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 238 treesize of output 230 [2022-11-02 20:35:08,568 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:35:08,569 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 29 treesize of output 34 [2022-11-02 20:35:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-02 20:35:08,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533891933] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:08,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:35:08,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-11-02 20:35:08,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153612706] [2022-11-02 20:35:08,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:08,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:35:08,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:08,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:35:08,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=311, Unknown=3, NotChecked=114, Total=506 [2022-11-02 20:35:08,634 INFO L87 Difference]: Start difference. First operand 2790 states and 11759 transitions. Second operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 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 20:35:09,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:09,369 INFO L93 Difference]: Finished difference Result 3913 states and 15016 transitions. [2022-11-02 20:35:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:35:09,370 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:35:09,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:09,387 INFO L225 Difference]: With dead ends: 3913 [2022-11-02 20:35:09,387 INFO L226 Difference]: Without dead ends: 3913 [2022-11-02 20:35:09,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=485, Unknown=3, NotChecked=144, Total=756 [2022-11-02 20:35:09,388 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 42 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 431 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:09,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 56 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 513 Invalid, 0 Unknown, 431 Unchecked, 0.5s Time] [2022-11-02 20:35:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3913 states. [2022-11-02 20:35:09,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3913 to 2790. [2022-11-02 20:35:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2499 states have (on average 4.7034813925570225) internal successors, (11754), 2789 states have internal predecessors, (11754), 0 states have call successors, (0), 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 20:35:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 11754 transitions. [2022-11-02 20:35:09,498 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 11754 transitions. Word has length 12 [2022-11-02 20:35:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:09,499 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 11754 transitions. [2022-11-02 20:35:09,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 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 20:35:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 11754 transitions. [2022-11-02 20:35:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:35:09,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:09,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:09,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:09,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-02 20:35:09,715 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2022-11-02 20:35:09,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash -266324609, now seen corresponding path program 1 times [2022-11-02 20:35:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:09,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402522526] [2022-11-02 20:35:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:09,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:10,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:10,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402522526] [2022-11-02 20:35:10,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402522526] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:10,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280784646] [2022-11-02 20:35:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:10,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:10,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:10,421 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:35:10,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0091a1-038d-40a5-b6a1-d0dc290985b0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:35:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:10,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 20:35:10,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:10,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:35:10,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:35:10,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:35:10,692 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-02 20:35:10,692 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 20:35:10,758 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 20:35:10,821 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:35:10,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:35:10,874 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 14 treesize of output 16 [2022-11-02 20:35:10,934 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:35:10,934 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 20:35:10,998 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 14 treesize of output 16 [2022-11-02 20:35:11,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:35:11,042 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 14 treesize of output 16 [2022-11-02 20:35:11,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:35:11,142 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 14 treesize of output 16 [2022-11-02 20:35:11,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:35:11,197 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 14 treesize of output 16 [2022-11-02 20:35:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:11,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:11,258 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_940 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_940) c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) 4294967296)) is different from false [2022-11-02 20:35:11,271 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_939 (Array Int Int)) (v_ArrVal_940 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_939) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_940) c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) 4294967296)) is different from false [2022-11-02 20:35:11,278 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_939 (Array Int Int)) (v_ArrVal_940 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_939) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_940) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2022-11-02 20:35:11,289 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_939 (Array Int Int)) (v_ArrVal_938 (Array Int Int)) (v_ArrVal_940 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_938) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_939) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_940) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2022-11-02 20:35:11,296 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_937 (Array Int Int)) (v_ArrVal_939 (Array Int Int)) (v_ArrVal_938 (Array Int Int)) (v_ArrVal_940 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_937) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_938) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_939) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_940) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2022-11-02 20:35:11,492 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:35:11,493 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 34 treesize of output 35 [2022-11-02 20:35:11,511 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:35:11,511 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 3857 treesize of output 3827 [2022-11-02 20:35:11,547 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 3814 treesize of output 3686 [2022-11-02 20:35:11,588 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 3686 treesize of output 3670 [2022-11-02 20:35:11,623 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 3670 treesize of output 3414 [2022-11-02 20:35:11,651 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 3414 treesize of output 3350 [2022-11-02 20:35:11,679 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 3350 treesize of output 3318