./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.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_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/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_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/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_c1985675-0371-416c-8218-7efe5b2a7073/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 7c615a04683f0f8050243ec529c03e20511a5c93f5e823175650f11e9fefc562 --- 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 19:59:02,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:59:02,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:59:02,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:59:02,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:59:02,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:59:02,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:59:02,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:59:02,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:59:02,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:59:02,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:59:02,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:59:02,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:59:02,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:59:02,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:59:02,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:59:02,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:59:02,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:59:02,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:59:02,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:59:02,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:59:02,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:59:02,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:59:02,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:59:02,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:59:02,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:59:02,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:59:02,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:59:02,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:59:02,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:59:02,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:59:02,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:59:02,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:59:02,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:59:02,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:59:02,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:59:02,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:59:02,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:59:02,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:59:02,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:59:02,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:59:02,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 19:59:02,524 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:59:02,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:59:02,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:59:02,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:59:02,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:59:02,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:59:02,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:59:02,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:59:02,528 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:59:02,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:59:02,529 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:59:02,529 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 19:59:02,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:59:02,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:59:02,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:59:02,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:59:02,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:59:02,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:59:02,531 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 19:59:02,531 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:59:02,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:59:02,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:59:02,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:59:02,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:59:02,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:59:02,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:59:02,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:59:02,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:59:02,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:59:02,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:59:02,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:59:02,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:59:02,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:59:02,536 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_c1985675-0371-416c-8218-7efe5b2a7073/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c615a04683f0f8050243ec529c03e20511a5c93f5e823175650f11e9fefc562 [2022-11-02 19:59:02,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:59:02,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:59:02,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:59:02,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:59:02,868 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:59:02,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2022-11-02 19:59:02,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/data/218668269/9967b11928334b6b9d55e6263a0ab29c/FLAG51ba40a8e [2022-11-02 19:59:03,474 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:59:03,475 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2022-11-02 19:59:03,481 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/data/218668269/9967b11928334b6b9d55e6263a0ab29c/FLAG51ba40a8e [2022-11-02 19:59:03,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/data/218668269/9967b11928334b6b9d55e6263a0ab29c [2022-11-02 19:59:03,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:59:03,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:59:03,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:59:03,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:59:03,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:59:03,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:59:03" (1/1) ... [2022-11-02 19:59:03,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e99876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:03, skipping insertion in model container [2022-11-02 19:59:03,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:59:03" (1/1) ... [2022-11-02 19:59:03,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:59:03,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:59:04,079 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_c1985675-0371-416c-8218-7efe5b2a7073/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c[2271,2284] [2022-11-02 19:59:04,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:59:04,109 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:59:04,127 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_c1985675-0371-416c-8218-7efe5b2a7073/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c[2271,2284] [2022-11-02 19:59:04,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:59:04,146 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:59:04,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04 WrapperNode [2022-11-02 19:59:04,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:59:04,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:59:04,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:59:04,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:59:04,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (1/1) ... [2022-11-02 19:59:04,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (1/1) ... [2022-11-02 19:59:04,205 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 172 [2022-11-02 19:59:04,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:59:04,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:59:04,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:59:04,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:59:04,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (1/1) ... [2022-11-02 19:59:04,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (1/1) ... [2022-11-02 19:59:04,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (1/1) ... [2022-11-02 19:59:04,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (1/1) ... [2022-11-02 19:59:04,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (1/1) ... [2022-11-02 19:59:04,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (1/1) ... [2022-11-02 19:59:04,232 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (1/1) ... [2022-11-02 19:59:04,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (1/1) ... [2022-11-02 19:59:04,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:59:04,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:59:04,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:59:04,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:59:04,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (1/1) ... [2022-11-02 19:59:04,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:59:04,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:04,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:59:04,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:59:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:59:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:59:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 19:59:04,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 19:59:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 19:59:04,320 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 19:59:04,320 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 19:59:04,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 19:59:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:59:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 19:59:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 19:59:04,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 19:59:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:59:04,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:59:04,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:59:04,324 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 19:59:04,457 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:59:04,460 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:59:04,931 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:59:05,256 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:59:05,256 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 19:59:05,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:59:05 BoogieIcfgContainer [2022-11-02 19:59:05,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:59:05,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:59:05,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:59:05,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:59:05,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:59:03" (1/3) ... [2022-11-02 19:59:05,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31df5928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:59:05, skipping insertion in model container [2022-11-02 19:59:05,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:04" (2/3) ... [2022-11-02 19:59:05,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31df5928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:59:05, skipping insertion in model container [2022-11-02 19:59:05,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:59:05" (3/3) ... [2022-11-02 19:59:05,313 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2022-11-02 19:59:05,321 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 19:59:05,349 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:59:05,359 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-02 19:59:05,359 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 19:59:05,510 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 19:59:05,553 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 19:59:05,570 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 140 transitions, 296 flow [2022-11-02 19:59:05,578 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 140 transitions, 296 flow [2022-11-02 19:59:05,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 140 transitions, 296 flow [2022-11-02 19:59:05,675 INFO L130 PetriNetUnfolder]: 9/138 cut-off events. [2022-11-02 19:59:05,675 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 19:59:05,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 9/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 166 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-11-02 19:59:05,682 INFO L118 LiptonReduction]: Number of co-enabled transitions 1400 [2022-11-02 19:59:18,843 INFO L133 LiptonReduction]: Checked pairs total: 2013 [2022-11-02 19:59:18,844 INFO L135 LiptonReduction]: Total number of compositions: 144 [2022-11-02 19:59:18,851 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 37 transitions, 90 flow [2022-11-02 19:59:18,886 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 287 states, 205 states have (on average 3.3658536585365852) internal successors, (690), 286 states have internal predecessors, (690), 0 states have call successors, (0), 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 19:59:18,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:59:18,910 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;@7a45c938, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:59:18,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-02 19:59:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 205 states have (on average 3.3658536585365852) internal successors, (690), 286 states have internal predecessors, (690), 0 states have call successors, (0), 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 19:59:18,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-02 19:59:18,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:18,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-02 19:59:18,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:18,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash 24947, now seen corresponding path program 1 times [2022-11-02 19:59:18,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:18,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362547988] [2022-11-02 19:59:18,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:18,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:19,158 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 19:59:19,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:19,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362547988] [2022-11-02 19:59:19,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362547988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:19,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:19,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 19:59:19,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855178564] [2022-11-02 19:59:19,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:19,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:59:19,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:59:19,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:59:19,197 INFO L87 Difference]: Start difference. First operand has 287 states, 205 states have (on average 3.3658536585365852) internal successors, (690), 286 states have internal predecessors, (690), 0 states have call successors, (0), 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 19:59:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:19,305 INFO L93 Difference]: Finished difference Result 198 states and 473 transitions. [2022-11-02 19:59:19,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:59:19,308 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 19:59:19,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:19,323 INFO L225 Difference]: With dead ends: 198 [2022-11-02 19:59:19,324 INFO L226 Difference]: Without dead ends: 198 [2022-11-02 19:59:19,325 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 19:59:19,329 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:19,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:19,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-02 19:59:19,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-11-02 19:59:19,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 149 states have (on average 3.174496644295302) internal successors, (473), 197 states have internal predecessors, (473), 0 states have call successors, (0), 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 19:59:19,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 473 transitions. [2022-11-02 19:59:19,404 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 473 transitions. Word has length 2 [2022-11-02 19:59:19,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:19,404 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 473 transitions. [2022-11-02 19:59:19,405 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 19:59:19,405 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 473 transitions. [2022-11-02 19:59:19,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-02 19:59:19,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:19,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-02 19:59:19,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:59:19,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:19,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:19,406 INFO L85 PathProgramCache]: Analyzing trace with hash 24945, now seen corresponding path program 1 times [2022-11-02 19:59:19,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:19,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950282846] [2022-11-02 19:59:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:19,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:19,490 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 19:59:19,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:19,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950282846] [2022-11-02 19:59:19,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950282846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:19,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:19,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 19:59:19,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668507819] [2022-11-02 19:59:19,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:19,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:59:19,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:59:19,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:59:19,494 INFO L87 Difference]: Start difference. First operand 198 states and 473 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:19,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:19,619 INFO L93 Difference]: Finished difference Result 394 states and 944 transitions. [2022-11-02 19:59:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:59:19,624 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 19:59:19,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:19,628 INFO L225 Difference]: With dead ends: 394 [2022-11-02 19:59:19,631 INFO L226 Difference]: Without dead ends: 394 [2022-11-02 19:59:19,631 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 19:59:19,633 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:19,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 4 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:19,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-02 19:59:19,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 199. [2022-11-02 19:59:19,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 150 states have (on average 3.1666666666666665) internal successors, (475), 198 states have internal predecessors, (475), 0 states have call successors, (0), 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 19:59:19,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 475 transitions. [2022-11-02 19:59:19,657 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 475 transitions. Word has length 2 [2022-11-02 19:59:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:19,658 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 475 transitions. [2022-11-02 19:59:19,658 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 19:59:19,658 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 475 transitions. [2022-11-02 19:59:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 19:59:19,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:19,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 19:59:19,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:59:19,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:19,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:19,660 INFO L85 PathProgramCache]: Analyzing trace with hash 774339, now seen corresponding path program 1 times [2022-11-02 19:59:19,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:19,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649875898] [2022-11-02 19:59:19,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:19,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:19,752 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 19:59:19,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:19,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649875898] [2022-11-02 19:59:19,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649875898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:19,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955506622] [2022-11-02 19:59:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:19,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:19,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:19,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:19,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 19:59:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:19,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:59:19,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:19,917 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 19:59:19,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:19,934 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 19:59:19,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955506622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:19,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:19,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-02 19:59:19,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330599774] [2022-11-02 19:59:19,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:19,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:59:19,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:59:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:59:19,937 INFO L87 Difference]: Start difference. First operand 199 states and 475 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:20,218 INFO L93 Difference]: Finished difference Result 982 states and 2357 transitions. [2022-11-02 19:59:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:59:20,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 19:59:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:20,225 INFO L225 Difference]: With dead ends: 982 [2022-11-02 19:59:20,227 INFO L226 Difference]: Without dead ends: 982 [2022-11-02 19:59:20,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:59:20,230 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 125 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:20,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 10 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:59:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2022-11-02 19:59:20,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 202. [2022-11-02 19:59:20,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 153 states have (on average 3.1437908496732025) internal successors, (481), 201 states have internal predecessors, (481), 0 states have call successors, (0), 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 19:59:20,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 481 transitions. [2022-11-02 19:59:20,261 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 481 transitions. Word has length 3 [2022-11-02 19:59:20,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:20,262 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 481 transitions. [2022-11-02 19:59:20,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:20,262 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 481 transitions. [2022-11-02 19:59:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 19:59:20,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:20,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 19:59:20,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:20,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:20,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:20,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:20,480 INFO L85 PathProgramCache]: Analyzing trace with hash 743883925, now seen corresponding path program 1 times [2022-11-02 19:59:20,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:20,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682714458] [2022-11-02 19:59:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:20,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:20,659 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 19:59:20,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:20,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682714458] [2022-11-02 19:59:20,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682714458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:20,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:20,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:59:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596246966] [2022-11-02 19:59:20,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:20,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:59:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:20,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:59:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:59:20,666 INFO L87 Difference]: Start difference. First operand 202 states and 481 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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 19:59:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:20,841 INFO L93 Difference]: Finished difference Result 269 states and 619 transitions. [2022-11-02 19:59:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:59:20,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 19:59:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:20,844 INFO L225 Difference]: With dead ends: 269 [2022-11-02 19:59:20,844 INFO L226 Difference]: Without dead ends: 265 [2022-11-02 19:59:20,844 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 19:59:20,845 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 43 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:20,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 8 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:20,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-02 19:59:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 245. [2022-11-02 19:59:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 196 states have (on average 3.0408163265306123) internal successors, (596), 244 states have internal predecessors, (596), 0 states have call successors, (0), 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 19:59:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 596 transitions. [2022-11-02 19:59:20,856 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 596 transitions. Word has length 5 [2022-11-02 19:59:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:20,857 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 596 transitions. [2022-11-02 19:59:20,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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 19:59:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 596 transitions. [2022-11-02 19:59:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 19:59:20,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:20,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 19:59:20,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 19:59:20,858 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1594244099, now seen corresponding path program 1 times [2022-11-02 19:59:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:20,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391152073] [2022-11-02 19:59:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:20,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:21,314 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 19:59:21,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:21,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391152073] [2022-11-02 19:59:21,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391152073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:21,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856021118] [2022-11-02 19:59:21,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:21,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:21,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:21,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:21,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 19:59:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:21,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 19:59:21,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:21,550 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 19:59:21,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:21,585 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 19:59:21,608 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 19:59:21,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:21,678 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_88 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_88) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2022-11-02 19:59:21,701 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:21,701 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 22 treesize of output 23 [2022-11-02 19:59:21,712 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:21,713 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 33 treesize of output 31 [2022-11-02 19:59:21,745 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 5 treesize of output 3 [2022-11-02 19:59:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 19:59:21,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856021118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:21,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:21,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-02 19:59:21,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323281692] [2022-11-02 19:59:21,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:21,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 19:59:21,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:21,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 19:59:21,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2022-11-02 19:59:21,761 INFO L87 Difference]: Start difference. First operand 245 states and 596 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:22,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:22,106 INFO L93 Difference]: Finished difference Result 365 states and 761 transitions. [2022-11-02 19:59:22,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:59:22,106 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 19:59:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:22,108 INFO L225 Difference]: With dead ends: 365 [2022-11-02 19:59:22,108 INFO L226 Difference]: Without dead ends: 365 [2022-11-02 19:59:22,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=132, Unknown=1, NotChecked=24, Total=210 [2022-11-02 19:59:22,109 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 77 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:22,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 24 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 299 Invalid, 0 Unknown, 63 Unchecked, 0.3s Time] [2022-11-02 19:59:22,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-02 19:59:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 246. [2022-11-02 19:59:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 197 states have (on average 3.0558375634517767) internal successors, (602), 245 states have internal predecessors, (602), 0 states have call successors, (0), 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 19:59:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 602 transitions. [2022-11-02 19:59:22,124 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 602 transitions. Word has length 6 [2022-11-02 19:59:22,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:22,125 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 602 transitions. [2022-11-02 19:59:22,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 602 transitions. [2022-11-02 19:59:22,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 19:59:22,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:22,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 19:59:22,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:22,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:22,340 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:22,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:22,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1594244101, now seen corresponding path program 1 times [2022-11-02 19:59:22,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:22,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518195122] [2022-11-02 19:59:22,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:22,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:22,709 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 19:59:22,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:22,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518195122] [2022-11-02 19:59:22,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518195122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:22,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793534614] [2022-11-02 19:59:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:22,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:22,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:22,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:22,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 19:59:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:22,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 19:59:22,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:22,873 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 19:59:22,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:22,909 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 19:59:22,939 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 19:59:22,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:22,978 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_117 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_117) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) is different from false [2022-11-02 19:59:22,993 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:22,994 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 24 treesize of output 25 [2022-11-02 19:59:23,002 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:23,003 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 39 treesize of output 37 [2022-11-02 19:59:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 19:59:23,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793534614] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:23,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:23,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2022-11-02 19:59:23,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178869223] [2022-11-02 19:59:23,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:23,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 19:59:23,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:23,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 19:59:23,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=121, Unknown=1, NotChecked=22, Total=182 [2022-11-02 19:59:23,039 INFO L87 Difference]: Start difference. First operand 246 states and 602 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) 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 19:59:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:23,555 INFO L93 Difference]: Finished difference Result 364 states and 759 transitions. [2022-11-02 19:59:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:59:23,559 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) 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 6 [2022-11-02 19:59:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:23,561 INFO L225 Difference]: With dead ends: 364 [2022-11-02 19:59:23,561 INFO L226 Difference]: Without dead ends: 364 [2022-11-02 19:59:23,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=231, Unknown=1, NotChecked=32, Total=342 [2022-11-02 19:59:23,562 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 90 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:23,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 29 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 378 Invalid, 0 Unknown, 53 Unchecked, 0.3s Time] [2022-11-02 19:59:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-02 19:59:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 246. [2022-11-02 19:59:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 197 states have (on average 3.050761421319797) internal successors, (601), 245 states have internal predecessors, (601), 0 states have call successors, (0), 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 19:59:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 601 transitions. [2022-11-02 19:59:23,574 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 601 transitions. Word has length 6 [2022-11-02 19:59:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:23,575 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 601 transitions. [2022-11-02 19:59:23,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) 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 19:59:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 601 transitions. [2022-11-02 19:59:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 19:59:23,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:23,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 19:59:23,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:23,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 19:59:23,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:23,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1594244097, now seen corresponding path program 1 times [2022-11-02 19:59:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:23,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676956357] [2022-11-02 19:59:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:23,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:59:23,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:23,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676956357] [2022-11-02 19:59:23,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676956357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:23,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:23,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 19:59:23,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237560399] [2022-11-02 19:59:23,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:23,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:59:23,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:23,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:59:23,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:59:23,854 INFO L87 Difference]: Start difference. First operand 246 states and 601 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:23,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:23,925 INFO L93 Difference]: Finished difference Result 351 states and 914 transitions. [2022-11-02 19:59:23,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:59:23,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 19:59:23,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:23,929 INFO L225 Difference]: With dead ends: 351 [2022-11-02 19:59:23,929 INFO L226 Difference]: Without dead ends: 351 [2022-11-02 19:59:23,930 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 19:59:23,931 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:23,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:23,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-02 19:59:23,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 297. [2022-11-02 19:59:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 248 states have (on average 3.532258064516129) internal successors, (876), 296 states have internal predecessors, (876), 0 states have call successors, (0), 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 19:59:23,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 876 transitions. [2022-11-02 19:59:23,943 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 876 transitions. Word has length 6 [2022-11-02 19:59:23,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:23,944 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 876 transitions. [2022-11-02 19:59:23,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 876 transitions. [2022-11-02 19:59:23,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 19:59:23,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:23,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 19:59:23,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 19:59:23,946 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:23,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:23,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1594244098, now seen corresponding path program 1 times [2022-11-02 19:59:23,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:23,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891628088] [2022-11-02 19:59:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:24,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:59:24,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:24,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891628088] [2022-11-02 19:59:24,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891628088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:24,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:24,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 19:59:24,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902512734] [2022-11-02 19:59:24,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:24,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:59:24,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:24,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:59:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:59:24,044 INFO L87 Difference]: Start difference. First operand 297 states and 876 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:24,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:24,119 INFO L93 Difference]: Finished difference Result 355 states and 912 transitions. [2022-11-02 19:59:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:59:24,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 19:59:24,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:24,122 INFO L225 Difference]: With dead ends: 355 [2022-11-02 19:59:24,122 INFO L226 Difference]: Without dead ends: 355 [2022-11-02 19:59:24,123 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 19:59:24,123 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:24,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-02 19:59:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 301. [2022-11-02 19:59:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 252 states have (on average 3.4682539682539684) internal successors, (874), 300 states have internal predecessors, (874), 0 states have call successors, (0), 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 19:59:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 874 transitions. [2022-11-02 19:59:24,135 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 874 transitions. Word has length 6 [2022-11-02 19:59:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:24,135 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 874 transitions. [2022-11-02 19:59:24,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 874 transitions. [2022-11-02 19:59:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 19:59:24,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:24,136 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-02 19:59:24,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 19:59:24,137 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:24,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:24,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1594533361, now seen corresponding path program 2 times [2022-11-02 19:59:24,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:24,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763109422] [2022-11-02 19:59:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:24,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:24,209 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 19:59:24,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:24,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763109422] [2022-11-02 19:59:24,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763109422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:24,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108817843] [2022-11-02 19:59:24,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:59:24,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:24,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:24,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:24,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 19:59:24,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 19:59:24,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:24,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:59:24,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:24,335 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 19:59:24,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:24,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108817843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:24,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:59:24,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-02 19:59:24,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898566975] [2022-11-02 19:59:24,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:24,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:59:24,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:24,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:59:24,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:24,341 INFO L87 Difference]: Start difference. First operand 301 states and 874 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 19:59:24,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:24,383 INFO L93 Difference]: Finished difference Result 300 states and 873 transitions. [2022-11-02 19:59:24,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:59:24,383 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 19:59:24,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:24,386 INFO L225 Difference]: With dead ends: 300 [2022-11-02 19:59:24,386 INFO L226 Difference]: Without dead ends: 300 [2022-11-02 19:59:24,386 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 19:59:24,390 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:24,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:59:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-02 19:59:24,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 297. [2022-11-02 19:59:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 249 states have (on average 3.4819277108433737) internal successors, (867), 296 states have internal predecessors, (867), 0 states have call successors, (0), 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 19:59:24,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 867 transitions. [2022-11-02 19:59:24,400 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 867 transitions. Word has length 6 [2022-11-02 19:59:24,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:24,401 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 867 transitions. [2022-11-02 19:59:24,401 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 19:59:24,401 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 867 transitions. [2022-11-02 19:59:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 19:59:24,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:24,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:24,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:24,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 19:59:24,619 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:24,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1912569982, now seen corresponding path program 1 times [2022-11-02 19:59:24,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:24,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596494302] [2022-11-02 19:59:24,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:24,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:24,661 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 19:59:24,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:24,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596494302] [2022-11-02 19:59:24,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596494302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:24,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:24,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:59:24,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033397811] [2022-11-02 19:59:24,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:24,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:59:24,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:24,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:59:24,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:59:24,663 INFO L87 Difference]: Start difference. First operand 297 states and 867 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 19:59:24,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:24,746 INFO L93 Difference]: Finished difference Result 413 states and 1128 transitions. [2022-11-02 19:59:24,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:59:24,747 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 19:59:24,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:24,749 INFO L225 Difference]: With dead ends: 413 [2022-11-02 19:59:24,750 INFO L226 Difference]: Without dead ends: 413 [2022-11-02 19:59:24,750 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 19:59:24,750 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:24,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:24,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-02 19:59:24,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 315. [2022-11-02 19:59:24,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 267 states have (on average 3.599250936329588) internal successors, (961), 314 states have internal predecessors, (961), 0 states have call successors, (0), 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 19:59:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 961 transitions. [2022-11-02 19:59:24,784 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 961 transitions. Word has length 7 [2022-11-02 19:59:24,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:24,784 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 961 transitions. [2022-11-02 19:59:24,784 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 19:59:24,785 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 961 transitions. [2022-11-02 19:59:24,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 19:59:24,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:24,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:24,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 19:59:24,786 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:24,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1912569888, now seen corresponding path program 1 times [2022-11-02 19:59:24,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:24,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547923674] [2022-11-02 19:59:24,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:24,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:24,869 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 19:59:24,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:24,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547923674] [2022-11-02 19:59:24,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547923674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:24,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:24,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:59:24,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030209548] [2022-11-02 19:59:24,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:24,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:59:24,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:24,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:59:24,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:59:24,873 INFO L87 Difference]: Start difference. First operand 315 states and 961 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 19:59:24,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:24,975 INFO L93 Difference]: Finished difference Result 287 states and 850 transitions. [2022-11-02 19:59:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:59:24,975 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 19:59:24,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:24,977 INFO L225 Difference]: With dead ends: 287 [2022-11-02 19:59:24,977 INFO L226 Difference]: Without dead ends: 264 [2022-11-02 19:59:24,978 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 19:59:24,978 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:24,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:24,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-02 19:59:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-11-02 19:59:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 216 states have (on average 3.759259259259259) internal successors, (812), 263 states have internal predecessors, (812), 0 states have call successors, (0), 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 19:59:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 812 transitions. [2022-11-02 19:59:24,988 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 812 transitions. Word has length 7 [2022-11-02 19:59:24,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:24,988 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 812 transitions. [2022-11-02 19:59:24,988 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 19:59:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 812 transitions. [2022-11-02 19:59:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 19:59:24,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:24,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:24,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 19:59:24,990 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:24,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:24,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2118037146, now seen corresponding path program 1 times [2022-11-02 19:59:24,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:24,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29080892] [2022-11-02 19:59:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:24,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:25,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:25,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29080892] [2022-11-02 19:59:25,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29080892] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:25,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740537272] [2022-11-02 19:59:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:25,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:25,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:25,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:25,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 19:59:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:59:25,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:25,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:25,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740537272] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:25,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:25,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-02 19:59:25,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896256406] [2022-11-02 19:59:25,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:25,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 19:59:25,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:25,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 19:59:25,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:59:25,332 INFO L87 Difference]: Start difference. First operand 264 states and 812 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) 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 19:59:25,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:25,733 INFO L93 Difference]: Finished difference Result 480 states and 1378 transitions. [2022-11-02 19:59:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:59:25,734 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) 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 7 [2022-11-02 19:59:25,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:25,736 INFO L225 Difference]: With dead ends: 480 [2022-11-02 19:59:25,737 INFO L226 Difference]: Without dead ends: 478 [2022-11-02 19:59:25,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:25,737 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 139 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:25,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 34 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:59:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-11-02 19:59:25,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 382. [2022-11-02 19:59:25,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 334 states have (on average 3.838323353293413) internal successors, (1282), 381 states have internal predecessors, (1282), 0 states have call successors, (0), 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 19:59:25,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1282 transitions. [2022-11-02 19:59:25,751 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1282 transitions. Word has length 7 [2022-11-02 19:59:25,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:25,752 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 1282 transitions. [2022-11-02 19:59:25,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) 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 19:59:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1282 transitions. [2022-11-02 19:59:25,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 19:59:25,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:25,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:25,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:25,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 19:59:25,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:25,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:25,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2118037394, now seen corresponding path program 1 times [2022-11-02 19:59:25,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:25,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947279686] [2022-11-02 19:59:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:25,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:26,326 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 19:59:26,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:26,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947279686] [2022-11-02 19:59:26,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947279686] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:26,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956900094] [2022-11-02 19:59:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:26,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:26,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:26,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:26,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 19:59:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:26,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 19:59:26,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:26,487 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 19:59:26,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:26,524 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 19:59:26,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:26,582 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 19:59:26,594 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 19:59:26,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:26,614 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_267 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_267) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296)) is different from false [2022-11-02 19:59:26,620 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_267 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_267) c_~A~0.base) c_~A~0.offset) 4294967296)) is different from false [2022-11-02 19:59:26,629 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_267 (Array Int Int)) (v_ArrVal_266 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_266) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_267) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296)) is different from false [2022-11-02 19:59:26,641 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:26,641 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 25 treesize of output 26 [2022-11-02 19:59:26,649 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:26,649 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 63 treesize of output 61 [2022-11-02 19:59:26,653 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 48 treesize of output 44 [2022-11-02 19:59:26,658 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 22 treesize of output 20 [2022-11-02 19:59:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 19:59:26,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956900094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:26,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:26,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2022-11-02 19:59:26,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689994684] [2022-11-02 19:59:26,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:26,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:59:26,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:26,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:59:26,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=122, Unknown=3, NotChecked=72, Total=240 [2022-11-02 19:59:26,716 INFO L87 Difference]: Start difference. First operand 382 states and 1282 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:27,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:27,073 INFO L93 Difference]: Finished difference Result 470 states and 1459 transitions. [2022-11-02 19:59:27,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:59:27,073 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 19:59:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:27,076 INFO L225 Difference]: With dead ends: 470 [2022-11-02 19:59:27,077 INFO L226 Difference]: Without dead ends: 470 [2022-11-02 19:59:27,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=180, Unknown=3, NotChecked=90, Total=342 [2022-11-02 19:59:27,077 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 125 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:27,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 15 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 218 Invalid, 0 Unknown, 158 Unchecked, 0.2s Time] [2022-11-02 19:59:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-02 19:59:27,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 386. [2022-11-02 19:59:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 338 states have (on average 3.789940828402367) internal successors, (1281), 385 states have internal predecessors, (1281), 0 states have call successors, (0), 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 19:59:27,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1281 transitions. [2022-11-02 19:59:27,091 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1281 transitions. Word has length 7 [2022-11-02 19:59:27,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:27,092 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 1281 transitions. [2022-11-02 19:59:27,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:27,092 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1281 transitions. [2022-11-02 19:59:27,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 19:59:27,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:27,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:27,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:27,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 19:59:27,311 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:27,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2118037392, now seen corresponding path program 1 times [2022-11-02 19:59:27,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:27,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186253459] [2022-11-02 19:59:27,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:27,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,695 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 19:59:27,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:27,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186253459] [2022-11-02 19:59:27,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186253459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:27,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185213643] [2022-11-02 19:59:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:27,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:27,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:27,697 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:27,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 19:59:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 19:59:27,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:27,852 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 19:59:27,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:27,889 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 19:59:27,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:27,948 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 19:59:27,960 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 19:59:27,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:27,980 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_301 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_301) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset))))) is different from false [2022-11-02 19:59:27,986 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_301 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_301) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-11-02 19:59:27,995 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_301 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_300) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_301) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-11-02 19:59:28,007 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:28,008 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 27 treesize of output 28 [2022-11-02 19:59:28,015 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:28,015 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 73 treesize of output 71 [2022-11-02 19:59:28,019 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 56 treesize of output 52 [2022-11-02 19:59:28,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-11-02 19:59:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 19:59:28,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185213643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:28,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:28,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2022-11-02 19:59:28,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394122677] [2022-11-02 19:59:28,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:28,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:59:28,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:28,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:59:28,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=122, Unknown=3, NotChecked=72, Total=240 [2022-11-02 19:59:28,075 INFO L87 Difference]: Start difference. First operand 386 states and 1281 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:28,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:28,426 INFO L93 Difference]: Finished difference Result 442 states and 1342 transitions. [2022-11-02 19:59:28,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:59:28,426 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 19:59:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:28,429 INFO L225 Difference]: With dead ends: 442 [2022-11-02 19:59:28,429 INFO L226 Difference]: Without dead ends: 438 [2022-11-02 19:59:28,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=180, Unknown=3, NotChecked=90, Total=342 [2022-11-02 19:59:28,430 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 136 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:28,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 12 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 180 Invalid, 0 Unknown, 158 Unchecked, 0.2s Time] [2022-11-02 19:59:28,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-02 19:59:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 370. [2022-11-02 19:59:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 322 states have (on average 3.6645962732919255) internal successors, (1180), 369 states have internal predecessors, (1180), 0 states have call successors, (0), 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 19:59:28,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1180 transitions. [2022-11-02 19:59:28,443 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1180 transitions. Word has length 7 [2022-11-02 19:59:28,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:28,443 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 1180 transitions. [2022-11-02 19:59:28,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:28,443 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1180 transitions. [2022-11-02 19:59:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 19:59:28,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:28,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:28,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:28,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:28,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:28,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1230056434, now seen corresponding path program 1 times [2022-11-02 19:59:28,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:28,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802230954] [2022-11-02 19:59:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:28,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:28,994 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 19:59:28,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:28,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802230954] [2022-11-02 19:59:28,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802230954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:28,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636999992] [2022-11-02 19:59:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:28,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:28,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:28,999 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:29,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 19:59:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:29,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 19:59:29,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:29,169 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 19:59:29,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:29,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 19:59:29,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:29,247 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 19:59:29,275 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 19:59:29,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:29,314 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_335 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_335) c_~A~0.base) c_~A~0.offset) 4294967296))) is different from false [2022-11-02 19:59:29,324 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_335 (Array Int Int)) (v_ArrVal_334 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_334) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_335) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967296))) is different from false [2022-11-02 19:59:29,339 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:29,339 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 27 treesize of output 28 [2022-11-02 19:59:29,348 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:29,348 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 143 treesize of output 137 [2022-11-02 19:59:29,356 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 61 treesize of output 57 [2022-11-02 19:59:29,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2022-11-02 19:59:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 19:59:29,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636999992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:29,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:29,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-11-02 19:59:29,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412997394] [2022-11-02 19:59:29,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:29,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 19:59:29,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:29,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 19:59:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=122, Unknown=2, NotChecked=46, Total=210 [2022-11-02 19:59:29,440 INFO L87 Difference]: Start difference. First operand 370 states and 1180 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:29,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:29,736 INFO L93 Difference]: Finished difference Result 440 states and 1262 transitions. [2022-11-02 19:59:29,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:59:29,737 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 19:59:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:29,739 INFO L225 Difference]: With dead ends: 440 [2022-11-02 19:59:29,739 INFO L226 Difference]: Without dead ends: 440 [2022-11-02 19:59:29,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=176, Unknown=2, NotChecked=58, Total=306 [2022-11-02 19:59:29,740 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 110 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:29,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 8 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 128 Invalid, 0 Unknown, 85 Unchecked, 0.2s Time] [2022-11-02 19:59:29,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-02 19:59:29,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 362. [2022-11-02 19:59:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 314 states have (on average 3.5796178343949046) internal successors, (1124), 361 states have internal predecessors, (1124), 0 states have call successors, (0), 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 19:59:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1124 transitions. [2022-11-02 19:59:29,755 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1124 transitions. Word has length 8 [2022-11-02 19:59:29,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:29,756 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 1124 transitions. [2022-11-02 19:59:29,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:29,756 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1124 transitions. [2022-11-02 19:59:29,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 19:59:29,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:29,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:29,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:29,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 19:59:29,971 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:29,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:29,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1230056430, now seen corresponding path program 1 times [2022-11-02 19:59:29,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:29,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594348376] [2022-11-02 19:59:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:29,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:30,281 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 19:59:30,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:30,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594348376] [2022-11-02 19:59:30,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594348376] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:30,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905629386] [2022-11-02 19:59:30,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:30,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:30,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:30,284 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:30,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 19:59:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:30,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 19:59:30,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:30,511 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 19:59:30,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:30,541 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 19:59:30,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:30,580 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 19:59:30,603 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 19:59:30,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:30,633 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_369 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_369) c_~A~0.base) c_~A~0.offset) 9223372039002259456)) is different from false [2022-11-02 19:59:30,641 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_369 (Array Int Int)) (v_ArrVal_368 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_368) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_369) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456)) is different from false [2022-11-02 19:59:30,652 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:30,652 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 25 treesize of output 26 [2022-11-02 19:59:30,660 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:30,660 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 63 treesize of output 61 [2022-11-02 19:59:30,665 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 48 treesize of output 44 [2022-11-02 19:59:30,670 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 22 treesize of output 20 [2022-11-02 19:59:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 19:59:30,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905629386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:30,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:30,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-11-02 19:59:30,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402927532] [2022-11-02 19:59:30,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:30,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 19:59:30,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:30,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 19:59:30,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=122, Unknown=2, NotChecked=46, Total=210 [2022-11-02 19:59:30,728 INFO L87 Difference]: Start difference. First operand 362 states and 1124 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:31,080 INFO L93 Difference]: Finished difference Result 412 states and 1177 transitions. [2022-11-02 19:59:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:59:31,081 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 19:59:31,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:31,083 INFO L225 Difference]: With dead ends: 412 [2022-11-02 19:59:31,083 INFO L226 Difference]: Without dead ends: 412 [2022-11-02 19:59:31,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=176, Unknown=2, NotChecked=58, Total=306 [2022-11-02 19:59:31,084 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 118 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:31,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 15 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 233 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-02 19:59:31,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-11-02 19:59:31,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 354. [2022-11-02 19:59:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 306 states have (on average 3.4901960784313726) internal successors, (1068), 353 states have internal predecessors, (1068), 0 states have call successors, (0), 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 19:59:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1068 transitions. [2022-11-02 19:59:31,096 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1068 transitions. Word has length 8 [2022-11-02 19:59:31,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:31,096 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 1068 transitions. [2022-11-02 19:59:31,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1068 transitions. [2022-11-02 19:59:31,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 19:59:31,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:31,097 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:31,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:31,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:31,319 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:31,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:31,319 INFO L85 PathProgramCache]: Analyzing trace with hash -965696172, now seen corresponding path program 2 times [2022-11-02 19:59:31,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:31,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002098078] [2022-11-02 19:59:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:31,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:31,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002098078] [2022-11-02 19:59:31,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002098078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:31,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861755440] [2022-11-02 19:59:31,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:59:31,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:31,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:31,635 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:31,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 19:59:31,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:59:31,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:31,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 19:59:31,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:31,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 19:59:31,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:31,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 19:59:31,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:31,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:32,167 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:32,168 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 26 treesize of output 27 [2022-11-02 19:59:32,177 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:32,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 37 [2022-11-02 19:59:32,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-02 19:59:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:32,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861755440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:32,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:32,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-11-02 19:59:32,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489813683] [2022-11-02 19:59:32,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:32,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 19:59:32,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:32,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 19:59:32,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-02 19:59:32,329 INFO L87 Difference]: Start difference. First operand 354 states and 1068 transitions. Second operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 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 19:59:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:32,599 INFO L93 Difference]: Finished difference Result 360 states and 1092 transitions. [2022-11-02 19:59:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:59:32,599 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 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 19:59:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:32,601 INFO L225 Difference]: With dead ends: 360 [2022-11-02 19:59:32,601 INFO L226 Difference]: Without dead ends: 360 [2022-11-02 19:59:32,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-11-02 19:59:32,602 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:32,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2022-11-02 19:59:32,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-02 19:59:32,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 359. [2022-11-02 19:59:32,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 311 states have (on average 3.485530546623794) internal successors, (1084), 358 states have internal predecessors, (1084), 0 states have call successors, (0), 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 19:59:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1084 transitions. [2022-11-02 19:59:32,613 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1084 transitions. Word has length 8 [2022-11-02 19:59:32,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:32,613 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 1084 transitions. [2022-11-02 19:59:32,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 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 19:59:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1084 transitions. [2022-11-02 19:59:32,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 19:59:32,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:32,614 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:32,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:32,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 19:59:32,843 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:32,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:32,843 INFO L85 PathProgramCache]: Analyzing trace with hash -965696170, now seen corresponding path program 1 times [2022-11-02 19:59:32,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:32,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509190491] [2022-11-02 19:59:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:32,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:33,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:33,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509190491] [2022-11-02 19:59:33,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509190491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:33,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533730019] [2022-11-02 19:59:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:33,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:33,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:33,163 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:33,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 19:59:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:33,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 19:59:33,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:33,357 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 13 treesize of output 9 [2022-11-02 19:59:33,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:33,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 19:59:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:33,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:33,468 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_435 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_435) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2022-11-02 19:59:33,486 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:33,487 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 26 treesize of output 27 [2022-11-02 19:59:33,497 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:33,498 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 43 treesize of output 39 [2022-11-02 19:59:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-02 19:59:33,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533730019] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:33,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:33,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-02 19:59:33,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910942337] [2022-11-02 19:59:33,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:33,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:59:33,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:33,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:59:33,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=172, Unknown=1, NotChecked=26, Total=240 [2022-11-02 19:59:33,519 INFO L87 Difference]: Start difference. First operand 359 states and 1084 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:33,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:33,968 INFO L93 Difference]: Finished difference Result 514 states and 1307 transitions. [2022-11-02 19:59:33,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 19:59:33,971 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 19:59:33,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:33,974 INFO L225 Difference]: With dead ends: 514 [2022-11-02 19:59:33,974 INFO L226 Difference]: Without dead ends: 514 [2022-11-02 19:59:33,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=367, Unknown=1, NotChecked=40, Total=506 [2022-11-02 19:59:33,975 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 126 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:33,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 26 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 393 Invalid, 0 Unknown, 66 Unchecked, 0.3s Time] [2022-11-02 19:59:33,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-02 19:59:33,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 361. [2022-11-02 19:59:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 313 states have (on average 3.498402555910543) internal successors, (1095), 360 states have internal predecessors, (1095), 0 states have call successors, (0), 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 19:59:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1095 transitions. [2022-11-02 19:59:33,988 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1095 transitions. Word has length 8 [2022-11-02 19:59:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:33,988 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 1095 transitions. [2022-11-02 19:59:33,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1095 transitions. [2022-11-02 19:59:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 19:59:33,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:33,989 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:34,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:34,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 19:59:34,203 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:34,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash -965696174, now seen corresponding path program 1 times [2022-11-02 19:59:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:34,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658082951] [2022-11-02 19:59:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:34,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 19:59:34,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:34,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658082951] [2022-11-02 19:59:34,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658082951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:34,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:34,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:59:34,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694845850] [2022-11-02 19:59:34,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:34,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:59:34,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:34,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:59:34,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:59:34,253 INFO L87 Difference]: Start difference. First operand 361 states and 1095 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 19:59:34,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:34,311 INFO L93 Difference]: Finished difference Result 305 states and 856 transitions. [2022-11-02 19:59:34,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:59:34,312 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 8 [2022-11-02 19:59:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:34,314 INFO L225 Difference]: With dead ends: 305 [2022-11-02 19:59:34,314 INFO L226 Difference]: Without dead ends: 305 [2022-11-02 19:59:34,314 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 19:59:34,315 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:34,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:34,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-02 19:59:34,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 299. [2022-11-02 19:59:34,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 264 states have (on average 3.0795454545454546) internal successors, (813), 298 states have internal predecessors, (813), 0 states have call successors, (0), 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 19:59:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 813 transitions. [2022-11-02 19:59:34,324 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 813 transitions. Word has length 8 [2022-11-02 19:59:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:34,324 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 813 transitions. [2022-11-02 19:59:34,324 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 19:59:34,325 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 813 transitions. [2022-11-02 19:59:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 19:59:34,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:34,325 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:34,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 19:59:34,326 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:34,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -965696173, now seen corresponding path program 1 times [2022-11-02 19:59:34,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:34,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987008948] [2022-11-02 19:59:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:34,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 19:59:34,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:34,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987008948] [2022-11-02 19:59:34,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987008948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:34,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:34,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:59:34,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313396089] [2022-11-02 19:59:34,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:34,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:59:34,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:34,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:59:34,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:59:34,398 INFO L87 Difference]: Start difference. First operand 299 states and 813 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 19:59:34,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:34,435 INFO L93 Difference]: Finished difference Result 253 states and 631 transitions. [2022-11-02 19:59:34,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:59:34,436 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 8 [2022-11-02 19:59:34,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:34,437 INFO L225 Difference]: With dead ends: 253 [2022-11-02 19:59:34,437 INFO L226 Difference]: Without dead ends: 249 [2022-11-02 19:59:34,438 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 19:59:34,438 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:34,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:59:34,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-02 19:59:34,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 225. [2022-11-02 19:59:34,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 201 states have (on average 2.91044776119403) internal successors, (585), 224 states have internal predecessors, (585), 0 states have call successors, (0), 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 19:59:34,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 585 transitions. [2022-11-02 19:59:34,445 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 585 transitions. Word has length 8 [2022-11-02 19:59:34,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:34,446 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 585 transitions. [2022-11-02 19:59:34,446 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 19:59:34,446 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 585 transitions. [2022-11-02 19:59:34,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:59:34,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:34,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:34,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 19:59:34,447 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:34,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:34,448 INFO L85 PathProgramCache]: Analyzing trace with hash 522959877, now seen corresponding path program 1 times [2022-11-02 19:59:34,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:34,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457355217] [2022-11-02 19:59:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:34,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:34,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:59:34,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:34,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457355217] [2022-11-02 19:59:34,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457355217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:34,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:34,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:59:34,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215470811] [2022-11-02 19:59:34,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:34,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:59:34,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:34,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:59:34,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:59:34,505 INFO L87 Difference]: Start difference. First operand 225 states and 585 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 19:59:34,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:34,560 INFO L93 Difference]: Finished difference Result 201 states and 518 transitions. [2022-11-02 19:59:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:59:34,561 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 19:59:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:34,562 INFO L225 Difference]: With dead ends: 201 [2022-11-02 19:59:34,562 INFO L226 Difference]: Without dead ends: 201 [2022-11-02 19:59:34,563 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 19:59:34,564 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:34,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-02 19:59:34,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-11-02 19:59:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 182 states have (on average 2.8461538461538463) internal successors, (518), 200 states have internal predecessors, (518), 0 states have call successors, (0), 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 19:59:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 518 transitions. [2022-11-02 19:59:34,572 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 518 transitions. Word has length 9 [2022-11-02 19:59:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:34,572 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 518 transitions. [2022-11-02 19:59:34,572 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 19:59:34,572 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 518 transitions. [2022-11-02 19:59:34,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:59:34,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:34,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:34,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 19:59:34,574 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:34,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:34,574 INFO L85 PathProgramCache]: Analyzing trace with hash 522959783, now seen corresponding path program 1 times [2022-11-02 19:59:34,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:34,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563634717] [2022-11-02 19:59:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:34,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:34,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:34,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563634717] [2022-11-02 19:59:34,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563634717] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:34,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586770835] [2022-11-02 19:59:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:34,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:34,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:34,665 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:34,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 19:59:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:34,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:59:34,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:34,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:34,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586770835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:34,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:34,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-02 19:59:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948087384] [2022-11-02 19:59:34,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:34,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 19:59:34,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 19:59:34,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:59:34,949 INFO L87 Difference]: Start difference. First operand 201 states and 518 transitions. Second operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:35,120 INFO L93 Difference]: Finished difference Result 189 states and 466 transitions. [2022-11-02 19:59:35,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:59:35,120 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 19:59:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:35,122 INFO L225 Difference]: With dead ends: 189 [2022-11-02 19:59:35,122 INFO L226 Difference]: Without dead ends: 150 [2022-11-02 19:59:35,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:59:35,123 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 59 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:35,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 22 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:59:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-02 19:59:35,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-02 19:59:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 131 states have (on average 2.946564885496183) internal successors, (386), 149 states have internal predecessors, (386), 0 states have call successors, (0), 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 19:59:35,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 386 transitions. [2022-11-02 19:59:35,128 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 386 transitions. Word has length 9 [2022-11-02 19:59:35,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:35,128 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 386 transitions. [2022-11-02 19:59:35,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:35,128 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 386 transitions. [2022-11-02 19:59:35,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:59:35,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:35,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 19:59:35,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:35,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-02 19:59:35,345 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:35,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash 128193079, now seen corresponding path program 2 times [2022-11-02 19:59:35,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:35,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661075147] [2022-11-02 19:59:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:35,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:35,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:35,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661075147] [2022-11-02 19:59:35,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661075147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:35,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422763185] [2022-11-02 19:59:35,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:59:35,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:35,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:35,479 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:35,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 19:59:35,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:59:35,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:35,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 19:59:35,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:35,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:35,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:35,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422763185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:35,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:35,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-02 19:59:35,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367635145] [2022-11-02 19:59:35,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:35,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 19:59:35,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:35,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 19:59:35,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-02 19:59:35,818 INFO L87 Difference]: Start difference. First operand 150 states and 386 transitions. Second operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:36,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:36,175 INFO L93 Difference]: Finished difference Result 294 states and 717 transitions. [2022-11-02 19:59:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:59:36,175 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 19:59:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:36,177 INFO L225 Difference]: With dead ends: 294 [2022-11-02 19:59:36,177 INFO L226 Difference]: Without dead ends: 292 [2022-11-02 19:59:36,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2022-11-02 19:59:36,178 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 148 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:36,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 35 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:59:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-02 19:59:36,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 228. [2022-11-02 19:59:36,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 209 states have (on average 2.985645933014354) internal successors, (624), 227 states have internal predecessors, (624), 0 states have call successors, (0), 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 19:59:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 624 transitions. [2022-11-02 19:59:36,185 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 624 transitions. Word has length 9 [2022-11-02 19:59:36,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:36,186 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 624 transitions. [2022-11-02 19:59:36,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:36,186 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 624 transitions. [2022-11-02 19:59:36,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:59:36,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:36,187 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:36,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:36,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-02 19:59:36,411 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:36,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:36,411 INFO L85 PathProgramCache]: Analyzing trace with hash 128192829, now seen corresponding path program 1 times [2022-11-02 19:59:36,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:36,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467942278] [2022-11-02 19:59:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:36,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:36,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467942278] [2022-11-02 19:59:36,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467942278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:36,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098900899] [2022-11-02 19:59:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:36,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:36,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:36,769 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:36,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 19:59:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:36,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 19:59:36,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:36,990 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 13 treesize of output 9 [2022-11-02 19:59:37,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:37,024 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 19:59:37,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:37,107 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 19:59:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:37,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:37,147 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_578) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296)) is different from false [2022-11-02 19:59:37,153 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_578) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 4)) 4294967296)) is different from false [2022-11-02 19:59:37,158 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_578) c_~A~0.base) (+ c_~A~0.offset 4)) 4294967296)) is different from false [2022-11-02 19:59:37,167 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_578 (Array Int Int)) (v_ArrVal_577 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_577) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_578) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) is different from false [2022-11-02 19:59:37,179 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:37,179 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 27 treesize of output 28 [2022-11-02 19:59:37,188 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:37,188 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 71 treesize of output 67 [2022-11-02 19:59:37,193 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 54 treesize of output 46 [2022-11-02 19:59:37,198 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 24 treesize of output 20 [2022-11-02 19:59:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-02 19:59:37,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098900899] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:37,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:37,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-11-02 19:59:37,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649502532] [2022-11-02 19:59:37,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:37,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 19:59:37,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:37,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 19:59:37,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=226, Unknown=4, NotChecked=132, Total=420 [2022-11-02 19:59:37,256 INFO L87 Difference]: Start difference. First operand 228 states and 624 transitions. Second operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 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 19:59:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:37,743 INFO L93 Difference]: Finished difference Result 331 states and 833 transitions. [2022-11-02 19:59:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:59:37,743 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 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 19:59:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:37,745 INFO L225 Difference]: With dead ends: 331 [2022-11-02 19:59:37,745 INFO L226 Difference]: Without dead ends: 331 [2022-11-02 19:59:37,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=368, Unknown=4, NotChecked=172, Total=650 [2022-11-02 19:59:37,746 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 99 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:37,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 30 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 352 Invalid, 0 Unknown, 170 Unchecked, 0.3s Time] [2022-11-02 19:59:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-02 19:59:37,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 236. [2022-11-02 19:59:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 217 states have (on average 3.0368663594470044) internal successors, (659), 235 states have internal predecessors, (659), 0 states have call successors, (0), 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 19:59:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 659 transitions. [2022-11-02 19:59:37,757 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 659 transitions. Word has length 9 [2022-11-02 19:59:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:37,757 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 659 transitions. [2022-11-02 19:59:37,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 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 19:59:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 659 transitions. [2022-11-02 19:59:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 19:59:37,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:37,758 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:37,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:37,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:37,975 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:37,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:37,975 INFO L85 PathProgramCache]: Analyzing trace with hash 128192831, now seen corresponding path program 1 times [2022-11-02 19:59:37,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:37,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80676318] [2022-11-02 19:59:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:37,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:38,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:38,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80676318] [2022-11-02 19:59:38,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80676318] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:38,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132178201] [2022-11-02 19:59:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:38,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:38,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:38,454 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:38,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 19:59:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:38,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 19:59:38,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:38,646 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 13 treesize of output 9 [2022-11-02 19:59:38,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:38,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 19:59:38,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:38,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 19:59:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:38,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:38,821 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_616 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_616) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 9223372039002259456))) is different from false [2022-11-02 19:59:38,827 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_616 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_616) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 4)) 9223372039002259456))) is different from false [2022-11-02 19:59:38,833 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_616 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_616) c_~A~0.base) (+ c_~A~0.offset 4)) 9223372039002259456))) is different from false [2022-11-02 19:59:38,851 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_616 (Array Int Int)) (v_ArrVal_615 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_615) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_616) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2022-11-02 19:59:38,868 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:38,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 19:59:38,876 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:38,876 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 81 treesize of output 77 [2022-11-02 19:59:38,881 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 62 treesize of output 54 [2022-11-02 19:59:38,886 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 28 treesize of output 24 [2022-11-02 19:59:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-02 19:59:38,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132178201] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:38,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:38,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-11-02 19:59:38,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750565794] [2022-11-02 19:59:38,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:38,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 19:59:38,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:38,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 19:59:38,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=226, Unknown=4, NotChecked=132, Total=420 [2022-11-02 19:59:38,929 INFO L87 Difference]: Start difference. First operand 236 states and 659 transitions. Second operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 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 19:59:39,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:39,396 INFO L93 Difference]: Finished difference Result 309 states and 763 transitions. [2022-11-02 19:59:39,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:59:39,396 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 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 19:59:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:39,398 INFO L225 Difference]: With dead ends: 309 [2022-11-02 19:59:39,398 INFO L226 Difference]: Without dead ends: 303 [2022-11-02 19:59:39,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=368, Unknown=4, NotChecked=172, Total=650 [2022-11-02 19:59:39,399 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 148 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:39,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 28 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 320 Invalid, 0 Unknown, 234 Unchecked, 0.3s Time] [2022-11-02 19:59:39,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-02 19:59:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 223. [2022-11-02 19:59:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 204 states have (on average 2.911764705882353) internal successors, (594), 222 states have internal predecessors, (594), 0 states have call successors, (0), 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 19:59:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 594 transitions. [2022-11-02 19:59:39,412 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 594 transitions. Word has length 9 [2022-11-02 19:59:39,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:39,412 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 594 transitions. [2022-11-02 19:59:39,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 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 19:59:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 594 transitions. [2022-11-02 19:59:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 19:59:39,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:39,413 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:39,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:39,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-02 19:59:39,639 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:39,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:39,639 INFO L85 PathProgramCache]: Analyzing trace with hash -178926571, now seen corresponding path program 2 times [2022-11-02 19:59:39,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:39,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973649993] [2022-11-02 19:59:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:39,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:39,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:39,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973649993] [2022-11-02 19:59:39,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973649993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:39,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686295794] [2022-11-02 19:59:39,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:59:39,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:39,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:39,952 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:39,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 19:59:40,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:59:40,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:40,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 19:59:40,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:40,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 19:59:40,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:40,252 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 20 treesize of output 22 [2022-11-02 19:59:40,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:40,307 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 20 treesize of output 22 [2022-11-02 19:59:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:40,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:40,680 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:40,681 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 19:59:40,691 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:40,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 163 [2022-11-02 19:59:40,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 122 [2022-11-02 19:59:40,706 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 67 treesize of output 55 [2022-11-02 19:59:40,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:40,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686295794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:40,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:40,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-02 19:59:40,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008667848] [2022-11-02 19:59:40,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:40,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 19:59:40,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:40,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 19:59:40,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=436, Unknown=3, NotChecked=0, Total=506 [2022-11-02 19:59:40,959 INFO L87 Difference]: Start difference. First operand 223 states and 594 transitions. Second operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:41,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:41,340 INFO L93 Difference]: Finished difference Result 255 states and 644 transitions. [2022-11-02 19:59:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:59:41,341 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 19:59:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:41,343 INFO L225 Difference]: With dead ends: 255 [2022-11-02 19:59:41,343 INFO L226 Difference]: Without dead ends: 255 [2022-11-02 19:59:41,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=748, Unknown=3, NotChecked=0, Total=870 [2022-11-02 19:59:41,344 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:41,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 55 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 70 Unchecked, 0.1s Time] [2022-11-02 19:59:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-02 19:59:41,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 221. [2022-11-02 19:59:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 202 states have (on average 2.905940594059406) internal successors, (587), 220 states have internal predecessors, (587), 0 states have call successors, (0), 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 19:59:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 587 transitions. [2022-11-02 19:59:41,352 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 587 transitions. Word has length 10 [2022-11-02 19:59:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:41,352 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 587 transitions. [2022-11-02 19:59:41,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 587 transitions. [2022-11-02 19:59:41,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 19:59:41,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:41,353 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:41,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:41,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-02 19:59:41,569 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:41,570 INFO L85 PathProgramCache]: Analyzing trace with hash -178926567, now seen corresponding path program 1 times [2022-11-02 19:59:41,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:41,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697438427] [2022-11-02 19:59:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:41,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:41,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:41,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697438427] [2022-11-02 19:59:41,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697438427] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:41,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811809275] [2022-11-02 19:59:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:41,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:41,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:41,863 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:41,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 19:59:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:42,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 19:59:42,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:42,079 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 13 treesize of output 9 [2022-11-02 19:59:42,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:42,113 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 19:59:42,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:42,141 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 19:59:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:42,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:42,231 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_692 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_692) c_~A~0.base) (+ c_~A~0.offset 4)) 9223372039002259456)) is different from false [2022-11-02 19:59:42,242 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_692 (Array Int Int)) (v_ArrVal_691 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_691) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_692) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) is different from false [2022-11-02 19:59:42,253 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:42,254 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 27 treesize of output 28 [2022-11-02 19:59:42,264 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:42,264 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 71 treesize of output 67 [2022-11-02 19:59:42,268 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 54 treesize of output 46 [2022-11-02 19:59:42,273 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 24 treesize of output 20 [2022-11-02 19:59:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-02 19:59:42,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811809275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:42,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:42,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-02 19:59:42,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335830431] [2022-11-02 19:59:42,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:42,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 19:59:42,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:42,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 19:59:42,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=226, Unknown=2, NotChecked=62, Total=342 [2022-11-02 19:59:42,315 INFO L87 Difference]: Start difference. First operand 221 states and 587 transitions. Second operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 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 19:59:42,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:42,750 INFO L93 Difference]: Finished difference Result 311 states and 809 transitions. [2022-11-02 19:59:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:59:42,750 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 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 19:59:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:42,752 INFO L225 Difference]: With dead ends: 311 [2022-11-02 19:59:42,752 INFO L226 Difference]: Without dead ends: 311 [2022-11-02 19:59:42,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=361, Unknown=2, NotChecked=82, Total=552 [2022-11-02 19:59:42,753 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 128 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:42,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 28 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 334 Invalid, 0 Unknown, 85 Unchecked, 0.3s Time] [2022-11-02 19:59:42,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-02 19:59:42,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 253. [2022-11-02 19:59:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 234 states have (on average 3.0641025641025643) internal successors, (717), 252 states have internal predecessors, (717), 0 states have call successors, (0), 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 19:59:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 717 transitions. [2022-11-02 19:59:42,762 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 717 transitions. Word has length 10 [2022-11-02 19:59:42,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:42,762 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 717 transitions. [2022-11-02 19:59:42,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 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 19:59:42,763 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 717 transitions. [2022-11-02 19:59:42,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 19:59:42,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:42,763 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2022-11-02 19:59:42,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:42,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-02 19:59:42,979 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:42,979 INFO L85 PathProgramCache]: Analyzing trace with hash -573693277, now seen corresponding path program 3 times [2022-11-02 19:59:42,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:42,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311451544] [2022-11-02 19:59:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:42,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:43,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:43,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311451544] [2022-11-02 19:59:43,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311451544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:43,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186313365] [2022-11-02 19:59:43,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:59:43,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:43,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:43,339 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:43,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 19:59:43,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 19:59:43,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:43,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 19:59:43,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:43,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 19:59:43,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:43,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 19:59:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:43,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:44,176 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:44,176 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 26 treesize of output 27 [2022-11-02 19:59:44,186 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:44,186 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 41 treesize of output 37 [2022-11-02 19:59:44,192 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 13 treesize of output 7 [2022-11-02 19:59:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:44,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186313365] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:44,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:44,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-11-02 19:59:44,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462016334] [2022-11-02 19:59:44,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:44,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 19:59:44,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:44,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 19:59:44,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2022-11-02 19:59:44,450 INFO L87 Difference]: Start difference. First operand 253 states and 717 transitions. Second operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:44,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:44,792 INFO L93 Difference]: Finished difference Result 260 states and 740 transitions. [2022-11-02 19:59:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 19:59:44,793 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 19:59:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:44,794 INFO L225 Difference]: With dead ends: 260 [2022-11-02 19:59:44,794 INFO L226 Difference]: Without dead ends: 260 [2022-11-02 19:59:44,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 19:59:44,796 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:44,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2022-11-02 19:59:44,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-02 19:59:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2022-11-02 19:59:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 240 states have (on average 3.058333333333333) internal successors, (734), 258 states have internal predecessors, (734), 0 states have call successors, (0), 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 19:59:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 734 transitions. [2022-11-02 19:59:44,804 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 734 transitions. Word has length 10 [2022-11-02 19:59:44,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:44,804 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 734 transitions. [2022-11-02 19:59:44,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 734 transitions. [2022-11-02 19:59:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 19:59:44,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:44,813 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2022-11-02 19:59:44,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:45,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-02 19:59:45,019 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:45,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:45,019 INFO L85 PathProgramCache]: Analyzing trace with hash -573693275, now seen corresponding path program 3 times [2022-11-02 19:59:45,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:45,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261100126] [2022-11-02 19:59:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:45,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:45,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:45,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261100126] [2022-11-02 19:59:45,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261100126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:45,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777053460] [2022-11-02 19:59:45,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:59:45,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:45,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:45,355 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:45,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 19:59:45,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 19:59:45,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:45,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 19:59:45,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:45,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 19:59:45,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:45,731 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 20 treesize of output 22 [2022-11-02 19:59:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:45,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:46,126 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:46,126 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 19:59:46,137 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:46,137 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 47 treesize of output 43 [2022-11-02 19:59:46,143 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 15 treesize of output 9 [2022-11-02 19:59:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:46,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777053460] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:46,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:46,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-11-02 19:59:46,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031998613] [2022-11-02 19:59:46,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:46,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 19:59:46,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:46,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 19:59:46,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2022-11-02 19:59:46,403 INFO L87 Difference]: Start difference. First operand 259 states and 734 transitions. Second operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:46,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:46,818 INFO L93 Difference]: Finished difference Result 277 states and 769 transitions. [2022-11-02 19:59:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:59:46,818 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 19:59:46,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:46,820 INFO L225 Difference]: With dead ends: 277 [2022-11-02 19:59:46,820 INFO L226 Difference]: Without dead ends: 277 [2022-11-02 19:59:46,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 19:59:46,821 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:46,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-11-02 19:59:46,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-02 19:59:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 259. [2022-11-02 19:59:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 240 states have (on average 3.0541666666666667) internal successors, (733), 258 states have internal predecessors, (733), 0 states have call successors, (0), 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 19:59:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 733 transitions. [2022-11-02 19:59:46,829 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 733 transitions. Word has length 10 [2022-11-02 19:59:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:46,830 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 733 transitions. [2022-11-02 19:59:46,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 733 transitions. [2022-11-02 19:59:46,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 19:59:46,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:46,831 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2022-11-02 19:59:46,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:47,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-02 19:59:47,051 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:47,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:47,051 INFO L85 PathProgramCache]: Analyzing trace with hash -573693218, now seen corresponding path program 1 times [2022-11-02 19:59:47,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:47,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297324755] [2022-11-02 19:59:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:47,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 19:59:47,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:47,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297324755] [2022-11-02 19:59:47,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297324755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:47,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49062754] [2022-11-02 19:59:47,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:47,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:47,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:47,124 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:47,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 19:59:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:47,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:59:47,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 19:59:47,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 19:59:47,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49062754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:47,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:47,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-02 19:59:47,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573456342] [2022-11-02 19:59:47,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:47,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 19:59:47,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 19:59:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:59:47,350 INFO L87 Difference]: Start difference. First operand 259 states and 733 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:47,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:47,567 INFO L93 Difference]: Finished difference Result 695 states and 1899 transitions. [2022-11-02 19:59:47,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:59:47,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 19:59:47,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:47,571 INFO L225 Difference]: With dead ends: 695 [2022-11-02 19:59:47,571 INFO L226 Difference]: Without dead ends: 695 [2022-11-02 19:59:47,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:59:47,572 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 128 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:47,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 13 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-11-02 19:59:47,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 335. [2022-11-02 19:59:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 316 states have (on average 3.8892405063291138) internal successors, (1229), 334 states have internal predecessors, (1229), 0 states have call successors, (0), 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 19:59:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 1229 transitions. [2022-11-02 19:59:47,585 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 1229 transitions. Word has length 10 [2022-11-02 19:59:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:47,585 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 1229 transitions. [2022-11-02 19:59:47,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:47,585 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 1229 transitions. [2022-11-02 19:59:47,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 19:59:47,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:47,586 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2022-11-02 19:59:47,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:47,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:47,801 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:47,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:47,802 INFO L85 PathProgramCache]: Analyzing trace with hash -573693199, now seen corresponding path program 1 times [2022-11-02 19:59:47,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:47,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142166576] [2022-11-02 19:59:47,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:47,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 19:59:47,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:47,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142166576] [2022-11-02 19:59:47,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142166576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:47,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:47,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:59:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508562196] [2022-11-02 19:59:47,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:47,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:59:47,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:47,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:59:47,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:59:47,844 INFO L87 Difference]: Start difference. First operand 335 states and 1229 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:47,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:47,892 INFO L93 Difference]: Finished difference Result 317 states and 1102 transitions. [2022-11-02 19:59:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:59:47,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 19:59:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:47,896 INFO L225 Difference]: With dead ends: 317 [2022-11-02 19:59:47,896 INFO L226 Difference]: Without dead ends: 317 [2022-11-02 19:59:47,897 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 19:59:47,898 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:47,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:59:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-02 19:59:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2022-11-02 19:59:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 302 states have (on average 3.6490066225165565) internal successors, (1102), 316 states have internal predecessors, (1102), 0 states have call successors, (0), 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 19:59:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 1102 transitions. [2022-11-02 19:59:47,908 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 1102 transitions. Word has length 10 [2022-11-02 19:59:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:47,908 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 1102 transitions. [2022-11-02 19:59:47,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 1102 transitions. [2022-11-02 19:59:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:59:47,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:47,909 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:47,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 19:59:47,910 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1248582493, now seen corresponding path program 1 times [2022-11-02 19:59:47,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:47,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857223266] [2022-11-02 19:59:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:47,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:48,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:48,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857223266] [2022-11-02 19:59:48,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857223266] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:48,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039802829] [2022-11-02 19:59:48,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:48,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:48,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:48,242 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:48,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-02 19:59:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:48,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 19:59:48,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:48,491 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 13 treesize of output 9 [2022-11-02 19:59:48,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:48,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 19:59:48,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:48,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 19:59:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:48,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:48,680 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_855 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_855) c_~A~0.base) (+ c_~A~0.offset 4)) 4294967296))) is different from false [2022-11-02 19:59:48,695 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_854 (Array Int Int)) (v_ArrVal_855 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_854) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_855) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2022-11-02 19:59:48,705 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:48,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 19:59:48,714 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:48,715 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 81 treesize of output 77 [2022-11-02 19:59:48,719 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 62 treesize of output 54 [2022-11-02 19:59:48,724 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 28 treesize of output 24 [2022-11-02 19:59:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-02 19:59:48,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039802829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:48,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:48,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-02 19:59:48,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490521732] [2022-11-02 19:59:48,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:48,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 19:59:48,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:48,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 19:59:48,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=355, Unknown=2, NotChecked=78, Total=506 [2022-11-02 19:59:48,834 INFO L87 Difference]: Start difference. First operand 317 states and 1102 transitions. Second operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:49,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:49,409 INFO L93 Difference]: Finished difference Result 361 states and 1164 transitions. [2022-11-02 19:59:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 19:59:49,409 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:49,412 INFO L225 Difference]: With dead ends: 361 [2022-11-02 19:59:49,412 INFO L226 Difference]: Without dead ends: 361 [2022-11-02 19:59:49,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=626, Unknown=2, NotChecked=106, Total=870 [2022-11-02 19:59:49,413 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 114 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:49,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 20 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 243 Invalid, 0 Unknown, 87 Unchecked, 0.2s Time] [2022-11-02 19:59:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-11-02 19:59:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 317. [2022-11-02 19:59:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 302 states have (on average 3.5298013245033113) internal successors, (1066), 316 states have internal predecessors, (1066), 0 states have call successors, (0), 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 19:59:49,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 1066 transitions. [2022-11-02 19:59:49,423 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 1066 transitions. Word has length 11 [2022-11-02 19:59:49,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:49,423 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 1066 transitions. [2022-11-02 19:59:49,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:49,424 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 1066 transitions. [2022-11-02 19:59:49,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:59:49,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:49,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:49,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:49,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:49,639 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:49,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:49,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1251752828, now seen corresponding path program 2 times [2022-11-02 19:59:49,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:49,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216088221] [2022-11-02 19:59:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:49,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:49,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:49,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216088221] [2022-11-02 19:59:49,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216088221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:49,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60741670] [2022-11-02 19:59:49,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:59:49,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:49,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:49,769 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:49,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-02 19:59:49,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:59:49,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:49,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 19:59:49,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:50,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:50,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60741670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:50,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:50,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-02 19:59:50,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593553319] [2022-11-02 19:59:50,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:50,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 19:59:50,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:50,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 19:59:50,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-02 19:59:50,109 INFO L87 Difference]: Start difference. First operand 317 states and 1066 transitions. Second operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 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 19:59:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:50,359 INFO L93 Difference]: Finished difference Result 303 states and 1005 transitions. [2022-11-02 19:59:50,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:59:50,360 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 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 19:59:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:50,362 INFO L225 Difference]: With dead ends: 303 [2022-11-02 19:59:50,362 INFO L226 Difference]: Without dead ends: 244 [2022-11-02 19:59:50,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2022-11-02 19:59:50,363 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 76 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:50,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 29 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:59:50,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-02 19:59:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-02 19:59:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 229 states have (on average 3.7947598253275108) internal successors, (869), 243 states have internal predecessors, (869), 0 states have call successors, (0), 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 19:59:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 869 transitions. [2022-11-02 19:59:50,368 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 869 transitions. Word has length 11 [2022-11-02 19:59:50,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:50,368 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 869 transitions. [2022-11-02 19:59:50,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 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 19:59:50,369 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 869 transitions. [2022-11-02 19:59:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:59:50,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:50,369 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:50,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:50,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:50,595 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:50,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:50,595 INFO L85 PathProgramCache]: Analyzing trace with hash -604619314, now seen corresponding path program 2 times [2022-11-02 19:59:50,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:50,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164488995] [2022-11-02 19:59:50,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:50,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:51,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:51,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164488995] [2022-11-02 19:59:51,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164488995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:51,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777625351] [2022-11-02 19:59:51,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:59:51,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:51,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:51,028 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:51,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-02 19:59:51,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:59:51,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:51,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 19:59:51,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:51,302 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 13 treesize of output 9 [2022-11-02 19:59:51,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:51,342 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 19:59:51,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:51,455 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 19:59:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:51,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:51,500 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_931 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_931) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296)) is different from false [2022-11-02 19:59:51,505 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_931 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_931) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 4)) 4294967296)) is different from false [2022-11-02 19:59:51,510 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_931 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_931) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 4294967296)) is different from false [2022-11-02 19:59:51,514 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_931 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_931) c_~A~0.base) (+ c_~A~0.offset 8)) 4294967296)) is different from false [2022-11-02 19:59:51,530 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_931 (Array Int Int)) (v_ArrVal_930 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_930) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_931) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) is different from false [2022-11-02 19:59:51,544 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:51,544 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 27 treesize of output 28 [2022-11-02 19:59:51,552 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:51,552 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 71 treesize of output 67 [2022-11-02 19:59:51,557 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 28 treesize of output 24 [2022-11-02 19:59:51,560 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 50 treesize of output 42 [2022-11-02 19:59:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-02 19:59:51,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777625351] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:51,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:51,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-11-02 19:59:51,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537333116] [2022-11-02 19:59:51,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:51,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 19:59:51,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:51,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 19:59:51,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=363, Unknown=5, NotChecked=210, Total=650 [2022-11-02 19:59:51,622 INFO L87 Difference]: Start difference. First operand 244 states and 869 transitions. Second operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:52,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:52,238 INFO L93 Difference]: Finished difference Result 352 states and 1034 transitions. [2022-11-02 19:59:52,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:59:52,240 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 19:59:52,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:52,243 INFO L225 Difference]: With dead ends: 352 [2022-11-02 19:59:52,243 INFO L226 Difference]: Without dead ends: 352 [2022-11-02 19:59:52,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=588, Unknown=5, NotChecked=270, Total=992 [2022-11-02 19:59:52,244 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 174 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 335 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:52,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 41 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 480 Invalid, 0 Unknown, 335 Unchecked, 0.4s Time] [2022-11-02 19:59:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-02 19:59:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 244. [2022-11-02 19:59:52,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 229 states have (on average 3.7161572052401746) internal successors, (851), 243 states have internal predecessors, (851), 0 states have call successors, (0), 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 19:59:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 851 transitions. [2022-11-02 19:59:52,253 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 851 transitions. Word has length 11 [2022-11-02 19:59:52,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:52,253 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 851 transitions. [2022-11-02 19:59:52,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 851 transitions. [2022-11-02 19:59:52,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:59:52,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:52,254 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:52,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:52,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:52,463 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:52,463 INFO L85 PathProgramCache]: Analyzing trace with hash -604619312, now seen corresponding path program 2 times [2022-11-02 19:59:52,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:52,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945585616] [2022-11-02 19:59:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:52,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:52,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:52,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945585616] [2022-11-02 19:59:52,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945585616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:52,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315729506] [2022-11-02 19:59:52,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:59:52,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:52,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:52,891 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:52,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-02 19:59:53,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:59:53,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:53,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 19:59:53,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:53,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 19:59:53,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:53,228 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 20 treesize of output 22 [2022-11-02 19:59:53,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:53,438 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 20 treesize of output 22 [2022-11-02 19:59:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:53,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:53,523 WARN L833 $PredicateComparison]: unable to prove that (or (not (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0)) (forall ((v_ArrVal_973 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_973) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 9223372039002259456)))) is different from false [2022-11-02 19:59:53,767 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:53,768 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 19:59:53,779 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:53,780 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 89 treesize of output 85 [2022-11-02 19:59:53,786 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 68 treesize of output 56 [2022-11-02 19:59:53,793 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 30 treesize of output 24 [2022-11-02 19:59:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:54,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315729506] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:54,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:54,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-02 19:59:54,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271300221] [2022-11-02 19:59:54,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:54,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 19:59:54,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:54,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 19:59:54,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=4, NotChecked=52, Total=812 [2022-11-02 19:59:54,117 INFO L87 Difference]: Start difference. First operand 244 states and 851 transitions. Second operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:54,735 INFO L93 Difference]: Finished difference Result 267 states and 969 transitions. [2022-11-02 19:59:54,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:59:54,743 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:54,745 INFO L225 Difference]: With dead ends: 267 [2022-11-02 19:59:54,745 INFO L226 Difference]: Without dead ends: 267 [2022-11-02 19:59:54,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=205, Invalid=1355, Unknown=4, NotChecked=76, Total=1640 [2022-11-02 19:59:54,746 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:54,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 74 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 129 Unchecked, 0.1s Time] [2022-11-02 19:59:54,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-02 19:59:54,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 261. [2022-11-02 19:59:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 246 states have (on average 3.796747967479675) internal successors, (934), 260 states have internal predecessors, (934), 0 states have call successors, (0), 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 19:59:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 934 transitions. [2022-11-02 19:59:54,767 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 934 transitions. Word has length 11 [2022-11-02 19:59:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:54,767 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 934 transitions. [2022-11-02 19:59:54,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:54,768 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 934 transitions. [2022-11-02 19:59:54,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:59:54,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:54,768 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:54,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-11-02 19:59:54,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-02 19:59:54,987 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:54,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:54,988 INFO L85 PathProgramCache]: Analyzing trace with hash -604626752, now seen corresponding path program 3 times [2022-11-02 19:59:54,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:54,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214660817] [2022-11-02 19:59:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:54,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:55,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:55,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214660817] [2022-11-02 19:59:55,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214660817] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:55,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386668342] [2022-11-02 19:59:55,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:59:55,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:55,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:55,493 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:55,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-02 19:59:55,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 19:59:55,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:55,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 19:59:55,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:55,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 19:59:55,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:55,887 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 20 treesize of output 22 [2022-11-02 19:59:56,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:56,044 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 20 treesize of output 22 [2022-11-02 19:59:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:56,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:56,436 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:56,436 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 19:59:56,450 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:56,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 163 [2022-11-02 19:59:56,462 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 73 treesize of output 61 [2022-11-02 19:59:56,468 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 134 treesize of output 110 [2022-11-02 19:59:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:56,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386668342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:56,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:56,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-02 19:59:56,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758639049] [2022-11-02 19:59:56,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:56,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 19:59:56,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:56,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 19:59:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=711, Unknown=6, NotChecked=0, Total=812 [2022-11-02 19:59:56,811 INFO L87 Difference]: Start difference. First operand 261 states and 934 transitions. Second operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:57,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:57,366 INFO L93 Difference]: Finished difference Result 267 states and 957 transitions. [2022-11-02 19:59:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 19:59:57,366 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:57,368 INFO L225 Difference]: With dead ends: 267 [2022-11-02 19:59:57,368 INFO L226 Difference]: Without dead ends: 267 [2022-11-02 19:59:57,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=195, Invalid=1359, Unknown=6, NotChecked=0, Total=1560 [2022-11-02 19:59:57,369 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:57,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 29 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 103 Unchecked, 0.1s Time] [2022-11-02 19:59:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-02 19:59:57,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-11-02 19:59:57,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 252 states have (on average 3.7976190476190474) internal successors, (957), 266 states have internal predecessors, (957), 0 states have call successors, (0), 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 19:59:57,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 957 transitions. [2022-11-02 19:59:57,377 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 957 transitions. Word has length 11 [2022-11-02 19:59:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:57,377 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 957 transitions. [2022-11-02 19:59:57,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 957 transitions. [2022-11-02 19:59:57,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 19:59:57,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:57,378 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:57,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:57,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-02 19:59:57,592 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 19:59:57,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:57,592 INFO L85 PathProgramCache]: Analyzing trace with hash -604857392, now seen corresponding path program 4 times [2022-11-02 19:59:57,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:57,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66853795] [2022-11-02 19:59:57,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:57,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:57,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:57,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66853795] [2022-11-02 19:59:57,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66853795] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:57,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057377515] [2022-11-02 19:59:57,995 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 19:59:57,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:57,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:57,997 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:58,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-02 19:59:58,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 19:59:58,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:58,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 19:59:58,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:58,303 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 13 treesize of output 9 [2022-11-02 19:59:58,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:58,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 19:59:58,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 19:59:58,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 19:59:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:58,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:59:58,590 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1057 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 9223372039002259456))) is different from false [2022-11-02 19:59:58,596 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1057 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) c_~A~0.base) (+ c_~A~0.offset 8)) 9223372039002259456))) is different from false [2022-11-02 19:59:58,605 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1057 (Array Int Int)) (v_ArrVal_1056 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1056) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2022-11-02 19:59:58,615 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:58,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 19:59:58,624 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:59:58,624 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 81 treesize of output 77 [2022-11-02 19:59:58,629 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 32 treesize of output 28 [2022-11-02 19:59:58,633 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 58 treesize of output 50 [2022-11-02 19:59:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-02 19:59:58,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057377515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:59:58,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:59:58,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-02 19:59:58,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139004353] [2022-11-02 19:59:58,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:59:58,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 19:59:58,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:58,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 19:59:58,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=584, Unknown=3, NotChecked=150, Total=812 [2022-11-02 19:59:58,771 INFO L87 Difference]: Start difference. First operand 267 states and 957 transitions. Second operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:59,908 INFO L93 Difference]: Finished difference Result 357 states and 1092 transitions. [2022-11-02 19:59:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:59:59,908 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:59,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:59,910 INFO L225 Difference]: With dead ends: 357 [2022-11-02 19:59:59,910 INFO L226 Difference]: Without dead ends: 357 [2022-11-02 19:59:59,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=1111, Unknown=3, NotChecked=210, Total=1482 [2022-11-02 19:59:59,911 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 211 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:59,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 65 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 769 Invalid, 0 Unknown, 191 Unchecked, 0.5s Time] [2022-11-02 19:59:59,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-02 19:59:59,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 267. [2022-11-02 19:59:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 252 states have (on average 3.7261904761904763) internal successors, (939), 266 states have internal predecessors, (939), 0 states have call successors, (0), 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 19:59:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 939 transitions. [2022-11-02 19:59:59,920 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 939 transitions. Word has length 11 [2022-11-02 19:59:59,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:59,920 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 939 transitions. [2022-11-02 19:59:59,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 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 19:59:59,920 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 939 transitions. [2022-11-02 19:59:59,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 19:59:59,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:59,921 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:59,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:00,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-02 20:00:00,143 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:00,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:00,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1563318773, now seen corresponding path program 3 times [2022-11-02 20:00:00,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:00,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733663124] [2022-11-02 20:00:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:00,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:00,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733663124] [2022-11-02 20:00:00,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733663124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:00,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508184056] [2022-11-02 20:00:00,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:00:00,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:00,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:00,295 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:00,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-02 20:00:00,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:00:00,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:00,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:00:00,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:00,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:00,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508184056] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:00,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:00,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-11-02 20:00:00,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488237975] [2022-11-02 20:00:00,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:00,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:00:00,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:00,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:00:00,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:00:00,815 INFO L87 Difference]: Start difference. First operand 267 states and 939 transitions. Second operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:01,298 INFO L93 Difference]: Finished difference Result 428 states and 1262 transitions. [2022-11-02 20:00:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:00:01,298 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:00:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:01,302 INFO L225 Difference]: With dead ends: 428 [2022-11-02 20:00:01,302 INFO L226 Difference]: Without dead ends: 418 [2022-11-02 20:00:01,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=717, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:00:01,303 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 159 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:01,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 69 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:00:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-11-02 20:00:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 324. [2022-11-02 20:00:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 309 states have (on average 3.4271844660194173) internal successors, (1059), 323 states have internal predecessors, (1059), 0 states have call successors, (0), 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 20:00:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 1059 transitions. [2022-11-02 20:00:01,312 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 1059 transitions. Word has length 12 [2022-11-02 20:00:01,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:01,312 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 1059 transitions. [2022-11-02 20:00:01,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:01,313 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 1059 transitions. [2022-11-02 20:00:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:00:01,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:01,314 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:01,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:01,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-02 20:00:01,532 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:01,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1454673554, now seen corresponding path program 3 times [2022-11-02 20:00:01,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:01,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766683540] [2022-11-02 20:00:01,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:01,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:01,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:01,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766683540] [2022-11-02 20:00:01,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766683540] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:01,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310913023] [2022-11-02 20:00:01,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:00:01,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:01,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:01,929 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:01,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-02 20:00:02,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:00:02,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:02,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:00:02,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:02,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:00:02,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:02,376 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 20 treesize of output 22 [2022-11-02 20:00:02,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:02,430 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 20 treesize of output 22 [2022-11-02 20:00:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:02,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:02,949 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:02,949 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 20:00:02,962 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:02,962 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 89 treesize of output 85 [2022-11-02 20:00:02,969 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 68 treesize of output 56 [2022-11-02 20:00:02,976 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 30 treesize of output 24 [2022-11-02 20:00:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:03,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310913023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:03,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:03,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-02 20:00:03,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651753200] [2022-11-02 20:00:03,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:03,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:00:03,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:03,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:00:03,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=713, Unknown=3, NotChecked=0, Total=812 [2022-11-02 20:00:03,300 INFO L87 Difference]: Start difference. First operand 324 states and 1059 transitions. Second operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:03,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:03,771 INFO L93 Difference]: Finished difference Result 368 states and 1159 transitions. [2022-11-02 20:00:03,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:00:03,771 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:00:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:03,774 INFO L225 Difference]: With dead ends: 368 [2022-11-02 20:00:03,774 INFO L226 Difference]: Without dead ends: 368 [2022-11-02 20:00:03,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=170, Invalid=1233, Unknown=3, NotChecked=0, Total=1406 [2022-11-02 20:00:03,775 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:03,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 72 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 84 Unchecked, 0.1s Time] [2022-11-02 20:00:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-11-02 20:00:03,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 322. [2022-11-02 20:00:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 307 states have (on average 3.42671009771987) internal successors, (1052), 321 states have internal predecessors, (1052), 0 states have call successors, (0), 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 20:00:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1052 transitions. [2022-11-02 20:00:03,795 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1052 transitions. Word has length 12 [2022-11-02 20:00:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:03,795 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 1052 transitions. [2022-11-02 20:00:03,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1052 transitions. [2022-11-02 20:00:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:00:03,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:03,798 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:03,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:04,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:04,023 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:04,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:04,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1454673550, now seen corresponding path program 3 times [2022-11-02 20:00:04,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:04,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790196522] [2022-11-02 20:00:04,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:04,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:04,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:04,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790196522] [2022-11-02 20:00:04,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790196522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:04,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474692287] [2022-11-02 20:00:04,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:00:04,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:04,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:04,350 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:04,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-02 20:00:04,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:00:04,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:04,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:00:04,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:04,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:00:04,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:04,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:04,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:04,819 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 18 treesize of output 20 [2022-11-02 20:00:04,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:04,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:05,315 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:05,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:00:05,326 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:05,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 145 [2022-11-02 20:00:05,333 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 130 treesize of output 118 [2022-11-02 20:00:05,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-11-02 20:00:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:05,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474692287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:05,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:05,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-02 20:00:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12364932] [2022-11-02 20:00:05,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:05,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:00:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:05,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:00:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=712, Unknown=4, NotChecked=0, Total=812 [2022-11-02 20:00:05,651 INFO L87 Difference]: Start difference. First operand 322 states and 1052 transitions. Second operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:06,112 INFO L93 Difference]: Finished difference Result 395 states and 1217 transitions. [2022-11-02 20:00:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:00:06,113 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:00:06,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:06,115 INFO L225 Difference]: With dead ends: 395 [2022-11-02 20:00:06,115 INFO L226 Difference]: Without dead ends: 395 [2022-11-02 20:00:06,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=170, Invalid=1232, Unknown=4, NotChecked=0, Total=1406 [2022-11-02 20:00:06,116 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:06,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 86 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 183 Invalid, 0 Unknown, 88 Unchecked, 0.1s Time] [2022-11-02 20:00:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-11-02 20:00:06,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 320. [2022-11-02 20:00:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 305 states have (on average 3.4262295081967213) internal successors, (1045), 319 states have internal predecessors, (1045), 0 states have call successors, (0), 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 20:00:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 1045 transitions. [2022-11-02 20:00:06,126 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 1045 transitions. Word has length 12 [2022-11-02 20:00:06,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:06,126 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 1045 transitions. [2022-11-02 20:00:06,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:06,127 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 1045 transitions. [2022-11-02 20:00:06,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:00:06,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:06,127 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2022-11-02 20:00:06,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:06,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-02 20:00:06,355 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:06,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:06,355 INFO L85 PathProgramCache]: Analyzing trace with hash -807539788, now seen corresponding path program 4 times [2022-11-02 20:00:06,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:06,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917249727] [2022-11-02 20:00:06,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:06,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:06,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:06,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917249727] [2022-11-02 20:00:06,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917249727] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:06,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565033049] [2022-11-02 20:00:06,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:00:06,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:06,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:06,827 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:06,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-02 20:00:07,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:00:07,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:07,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 20:00:07,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:07,126 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 13 treesize of output 9 [2022-11-02 20:00:07,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:07,165 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 20:00:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:07,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:07,412 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1220 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1220) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) is different from false [2022-11-02 20:00:07,421 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:07,421 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 24 treesize of output 25 [2022-11-02 20:00:07,428 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:07,429 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 37 treesize of output 33 [2022-11-02 20:00:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-02 20:00:07,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565033049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:07,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:07,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-11-02 20:00:07,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040334357] [2022-11-02 20:00:07,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:07,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:00:07,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:07,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:00:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=841, Unknown=1, NotChecked=58, Total=992 [2022-11-02 20:00:07,552 INFO L87 Difference]: Start difference. First operand 320 states and 1045 transitions. Second operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:08,617 INFO L93 Difference]: Finished difference Result 367 states and 1113 transitions. [2022-11-02 20:00:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:00:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:00:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:08,619 INFO L225 Difference]: With dead ends: 367 [2022-11-02 20:00:08,620 INFO L226 Difference]: Without dead ends: 367 [2022-11-02 20:00:08,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=196, Invalid=1613, Unknown=1, NotChecked=82, Total=1892 [2022-11-02 20:00:08,621 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 81 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:08,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 76 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1067 Invalid, 0 Unknown, 50 Unchecked, 0.6s Time] [2022-11-02 20:00:08,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-02 20:00:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 320. [2022-11-02 20:00:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 305 states have (on average 3.422950819672131) internal successors, (1044), 319 states have internal predecessors, (1044), 0 states have call successors, (0), 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 20:00:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 1044 transitions. [2022-11-02 20:00:08,630 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 1044 transitions. Word has length 12 [2022-11-02 20:00:08,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:08,631 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 1044 transitions. [2022-11-02 20:00:08,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:08,631 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 1044 transitions. [2022-11-02 20:00:08,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:00:08,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:08,632 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2022-11-02 20:00:08,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-02 20:00:08,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:08,847 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:08,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:08,847 INFO L85 PathProgramCache]: Analyzing trace with hash -807539786, now seen corresponding path program 4 times [2022-11-02 20:00:08,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:08,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977712900] [2022-11-02 20:00:08,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:08,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:09,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977712900] [2022-11-02 20:00:09,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977712900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923219182] [2022-11-02 20:00:09,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:00:09,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:09,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:09,262 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:09,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-02 20:00:09,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:00:09,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:09,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 20:00:09,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:09,608 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 13 treesize of output 9 [2022-11-02 20:00:09,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:09,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:09,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:09,947 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1261 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1261) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2022-11-02 20:00:09,957 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:09,957 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 26 treesize of output 27 [2022-11-02 20:00:09,965 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:09,965 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 43 treesize of output 39 [2022-11-02 20:00:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-02 20:00:10,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923219182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:10,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:10,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-11-02 20:00:10,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783759835] [2022-11-02 20:00:10,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:10,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:00:10,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:00:10,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=841, Unknown=1, NotChecked=58, Total=992 [2022-11-02 20:00:10,099 INFO L87 Difference]: Start difference. First operand 320 states and 1044 transitions. Second operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:11,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:11,184 INFO L93 Difference]: Finished difference Result 366 states and 1111 transitions. [2022-11-02 20:00:11,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:00:11,185 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:00:11,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:11,186 INFO L225 Difference]: With dead ends: 366 [2022-11-02 20:00:11,186 INFO L226 Difference]: Without dead ends: 366 [2022-11-02 20:00:11,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=196, Invalid=1613, Unknown=1, NotChecked=82, Total=1892 [2022-11-02 20:00:11,188 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 96 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:11,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 54 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 816 Invalid, 0 Unknown, 48 Unchecked, 0.5s Time] [2022-11-02 20:00:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-02 20:00:11,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 320. [2022-11-02 20:00:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 305 states have (on average 3.419672131147541) internal successors, (1043), 319 states have internal predecessors, (1043), 0 states have call successors, (0), 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 20:00:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 1043 transitions. [2022-11-02 20:00:11,197 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 1043 transitions. Word has length 12 [2022-11-02 20:00:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:11,197 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 1043 transitions. [2022-11-02 20:00:11,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:11,197 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 1043 transitions. [2022-11-02 20:00:11,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:00:11,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:11,198 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:11,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:11,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:11,415 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:11,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:11,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2046923132, now seen corresponding path program 2 times [2022-11-02 20:00:11,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:11,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965475013] [2022-11-02 20:00:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:11,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:11,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:11,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965475013] [2022-11-02 20:00:11,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965475013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:11,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952124543] [2022-11-02 20:00:11,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:00:11,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:11,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:11,822 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:11,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-02 20:00:12,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:00:12,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:12,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:00:12,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:12,154 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 13 treesize of output 9 [2022-11-02 20:00:12,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:12,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:12,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:12,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:12,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:12,421 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1303 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1303) c_~A~0.base) (+ c_~A~0.offset 8)) 4294967296))) is different from false [2022-11-02 20:00:12,436 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1303 (Array Int Int)) (v_ArrVal_1302 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1302) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1303) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2022-11-02 20:00:12,448 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:12,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:00:12,456 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:12,457 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 159 treesize of output 149 [2022-11-02 20:00:12,462 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 134 treesize of output 118 [2022-11-02 20:00:12,469 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 63 treesize of output 55 [2022-11-02 20:00:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-02 20:00:12,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952124543] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:12,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:12,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-02 20:00:12,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954516820] [2022-11-02 20:00:12,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:12,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:00:12,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:00:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=623, Unknown=2, NotChecked=102, Total=812 [2022-11-02 20:00:12,615 INFO L87 Difference]: Start difference. First operand 320 states and 1043 transitions. Second operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:13,590 INFO L93 Difference]: Finished difference Result 460 states and 1442 transitions. [2022-11-02 20:00:13,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:00:13,590 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:00:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:13,593 INFO L225 Difference]: With dead ends: 460 [2022-11-02 20:00:13,593 INFO L226 Difference]: Without dead ends: 460 [2022-11-02 20:00:13,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=1154, Unknown=2, NotChecked=142, Total=1482 [2022-11-02 20:00:13,594 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 164 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:13,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 53 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 605 Invalid, 0 Unknown, 125 Unchecked, 0.4s Time] [2022-11-02 20:00:13,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-02 20:00:13,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 360. [2022-11-02 20:00:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 345 states have (on average 3.56231884057971) internal successors, (1229), 359 states have internal predecessors, (1229), 0 states have call successors, (0), 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 20:00:13,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 1229 transitions. [2022-11-02 20:00:13,605 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 1229 transitions. Word has length 13 [2022-11-02 20:00:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:13,605 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 1229 transitions. [2022-11-02 20:00:13,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 1229 transitions. [2022-11-02 20:00:13,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:00:13,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:13,606 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:13,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:13,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-02 20:00:13,826 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:13,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:13,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2046923128, now seen corresponding path program 1 times [2022-11-02 20:00:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:13,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329360392] [2022-11-02 20:00:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:13,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:14,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:14,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329360392] [2022-11-02 20:00:14,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329360392] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:14,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022223198] [2022-11-02 20:00:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:14,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:14,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:14,155 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:14,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-02 20:00:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:14,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:00:14,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:14,479 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 13 treesize of output 9 [2022-11-02 20:00:14,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:14,518 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 20:00:14,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:14,550 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 20:00:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:14,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:14,719 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1345 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1345) c_~A~0.base) (+ c_~A~0.offset 8)) 9223372039002259456)) is different from false [2022-11-02 20:00:14,728 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1345 (Array Int Int)) (v_ArrVal_1344 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1344) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1345) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) is different from false [2022-11-02 20:00:14,737 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:14,737 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 27 treesize of output 28 [2022-11-02 20:00:14,745 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:14,746 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 141 treesize of output 131 [2022-11-02 20:00:14,752 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 59 treesize of output 51 [2022-11-02 20:00:14,756 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 110 treesize of output 94 [2022-11-02 20:00:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-02 20:00:14,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022223198] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:14,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:14,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-11-02 20:00:14,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853239479] [2022-11-02 20:00:14,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:14,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:00:14,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:14,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:00:14,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=400, Unknown=2, NotChecked=82, Total=552 [2022-11-02 20:00:14,815 INFO L87 Difference]: Start difference. First operand 360 states and 1229 transitions. Second operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 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 20:00:15,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:15,400 INFO L93 Difference]: Finished difference Result 426 states and 1326 transitions. [2022-11-02 20:00:15,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:00:15,401 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:00:15,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:15,403 INFO L225 Difference]: With dead ends: 426 [2022-11-02 20:00:15,403 INFO L226 Difference]: Without dead ends: 426 [2022-11-02 20:00:15,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=627, Unknown=2, NotChecked=106, Total=870 [2022-11-02 20:00:15,404 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 118 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:15,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 50 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 573 Invalid, 0 Unknown, 116 Unchecked, 0.4s Time] [2022-11-02 20:00:15,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-02 20:00:15,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 360. [2022-11-02 20:00:15,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 345 states have (on average 3.4521739130434783) internal successors, (1191), 359 states have internal predecessors, (1191), 0 states have call successors, (0), 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 20:00:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 1191 transitions. [2022-11-02 20:00:15,414 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 1191 transitions. Word has length 13 [2022-11-02 20:00:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:15,415 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 1191 transitions. [2022-11-02 20:00:15,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 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 20:00:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 1191 transitions. [2022-11-02 20:00:15,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:00:15,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:15,416 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2022-11-02 20:00:15,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:15,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-11-02 20:00:15,631 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:15,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:15,631 INFO L85 PathProgramCache]: Analyzing trace with hash 736073685, now seen corresponding path program 5 times [2022-11-02 20:00:15,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:15,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049824901] [2022-11-02 20:00:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:15,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:15,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049824901] [2022-11-02 20:00:15,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049824901] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:15,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602069575] [2022-11-02 20:00:15,834 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:00:15,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:15,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:15,835 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:15,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-02 20:00:16,100 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-02 20:00:16,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:16,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:00:16,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:16,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:16,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602069575] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:16,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:16,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-11-02 20:00:16,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767891360] [2022-11-02 20:00:16,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:16,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:00:16,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:16,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:00:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:00:16,443 INFO L87 Difference]: Start difference. First operand 360 states and 1191 transitions. Second operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 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 20:00:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:17,201 INFO L93 Difference]: Finished difference Result 752 states and 2066 transitions. [2022-11-02 20:00:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:00:17,201 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:00:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:17,204 INFO L225 Difference]: With dead ends: 752 [2022-11-02 20:00:17,204 INFO L226 Difference]: Without dead ends: 750 [2022-11-02 20:00:17,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=613, Invalid=1643, Unknown=0, NotChecked=0, Total=2256 [2022-11-02 20:00:17,205 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 424 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:17,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 67 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:00:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-02 20:00:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 474. [2022-11-02 20:00:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 459 states have (on average 3.477124183006536) internal successors, (1596), 473 states have internal predecessors, (1596), 0 states have call successors, (0), 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 20:00:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1596 transitions. [2022-11-02 20:00:17,220 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 1596 transitions. Word has length 13 [2022-11-02 20:00:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:17,220 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 1596 transitions. [2022-11-02 20:00:17,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 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 20:00:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1596 transitions. [2022-11-02 20:00:17,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:00:17,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:17,221 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:17,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-11-02 20:00:17,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-02 20:00:17,435 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash 736073437, now seen corresponding path program 4 times [2022-11-02 20:00:17,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:17,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635582489] [2022-11-02 20:00:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:17,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:18,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:18,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635582489] [2022-11-02 20:00:18,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635582489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:18,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967324568] [2022-11-02 20:00:18,011 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:00:18,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:18,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:18,015 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:18,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-02 20:00:18,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:00:18,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:18,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-02 20:00:18,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:18,406 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 13 treesize of output 9 [2022-11-02 20:00:18,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:18,449 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 20:00:18,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:18,657 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 20:00:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:18,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:18,724 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1429 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1429) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296)) is different from false [2022-11-02 20:00:18,730 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1429 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1429) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 4)) 4294967296)) is different from false [2022-11-02 20:00:18,735 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1429 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1429) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 4294967296)) is different from false [2022-11-02 20:00:18,740 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1429 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1429) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 12)) 4294967296)) is different from false [2022-11-02 20:00:18,745 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1429 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1429) c_~A~0.base) (+ c_~A~0.offset 12)) 4294967296)) is different from false [2022-11-02 20:00:18,756 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1428 (Array Int Int)) (v_ArrVal_1429 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1428) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1429) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) is different from false [2022-11-02 20:00:18,765 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:18,766 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 27 treesize of output 28 [2022-11-02 20:00:18,773 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:18,774 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 71 treesize of output 67 [2022-11-02 20:00:18,777 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 54 treesize of output 46 [2022-11-02 20:00:18,782 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 24 treesize of output 20 [2022-11-02 20:00:18,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-02 20:00:18,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967324568] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:18,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:18,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2022-11-02 20:00:18,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528066390] [2022-11-02 20:00:18,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:18,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-02 20:00:18,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:18,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-02 20:00:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=744, Unknown=6, NotChecked=354, Total=1190 [2022-11-02 20:00:18,971 INFO L87 Difference]: Start difference. First operand 474 states and 1596 transitions. Second operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:20,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:20,697 INFO L93 Difference]: Finished difference Result 752 states and 2068 transitions. [2022-11-02 20:00:20,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:00:20,698 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:00:20,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:20,700 INFO L225 Difference]: With dead ends: 752 [2022-11-02 20:00:20,700 INFO L226 Difference]: Without dead ends: 752 [2022-11-02 20:00:20,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=183, Invalid=1475, Unknown=6, NotChecked=498, Total=2162 [2022-11-02 20:00:20,701 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 251 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 522 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:20,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 126 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1426 Invalid, 0 Unknown, 522 Unchecked, 0.9s Time] [2022-11-02 20:00:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-11-02 20:00:20,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 463. [2022-11-02 20:00:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 448 states have (on average 3.419642857142857) internal successors, (1532), 462 states have internal predecessors, (1532), 0 states have call successors, (0), 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 20:00:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1532 transitions. [2022-11-02 20:00:20,734 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1532 transitions. Word has length 13 [2022-11-02 20:00:20,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:20,735 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 1532 transitions. [2022-11-02 20:00:20,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:20,736 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1532 transitions. [2022-11-02 20:00:20,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:00:20,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:20,739 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:20,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:20,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-11-02 20:00:20,954 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash 736073439, now seen corresponding path program 5 times [2022-11-02 20:00:20,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:20,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020589681] [2022-11-02 20:00:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:21,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:21,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020589681] [2022-11-02 20:00:21,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020589681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:21,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657584262] [2022-11-02 20:00:21,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:00:21,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:21,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:21,563 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:21,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-02 20:00:21,790 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-02 20:00:21,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:21,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-02 20:00:21,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:21,921 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 13 treesize of output 9 [2022-11-02 20:00:21,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:21,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:22,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:22,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:22,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:22,209 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1475 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1475) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 9223372039002259456))) is different from false [2022-11-02 20:00:22,215 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1475 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1475) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 4)) 9223372039002259456))) is different from false [2022-11-02 20:00:22,220 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1475 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1475) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 9223372039002259456))) is different from false [2022-11-02 20:00:22,225 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1475 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1475) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 12))))) is different from false [2022-11-02 20:00:22,230 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1475 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1475) c_~A~0.base) (+ c_~A~0.offset 12)) 9223372039002259456))) is different from false [2022-11-02 20:00:22,242 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1475 (Array Int Int)) (v_ArrVal_1474 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1474) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1475) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2022-11-02 20:00:22,251 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:22,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:00:22,258 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:22,258 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 81 treesize of output 77 [2022-11-02 20:00:22,262 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 62 treesize of output 54 [2022-11-02 20:00:22,266 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 28 treesize of output 24 [2022-11-02 20:00:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-11-02 20:00:22,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657584262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:22,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:22,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2022-11-02 20:00:22,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335365712] [2022-11-02 20:00:22,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:22,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-02 20:00:22,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:22,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-02 20:00:22,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=744, Unknown=6, NotChecked=354, Total=1190 [2022-11-02 20:00:22,442 INFO L87 Difference]: Start difference. First operand 463 states and 1532 transitions. Second operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:24,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:24,071 INFO L93 Difference]: Finished difference Result 722 states and 1970 transitions. [2022-11-02 20:00:24,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:00:24,071 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:00:24,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:24,073 INFO L225 Difference]: With dead ends: 722 [2022-11-02 20:00:24,073 INFO L226 Difference]: Without dead ends: 712 [2022-11-02 20:00:24,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=183, Invalid=1475, Unknown=6, NotChecked=498, Total=2162 [2022-11-02 20:00:24,074 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 257 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 497 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:24,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 104 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1169 Invalid, 0 Unknown, 497 Unchecked, 0.8s Time] [2022-11-02 20:00:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-11-02 20:00:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 403. [2022-11-02 20:00:24,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 388 states have (on average 3.3092783505154637) internal successors, (1284), 402 states have internal predecessors, (1284), 0 states have call successors, (0), 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 20:00:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1284 transitions. [2022-11-02 20:00:24,086 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1284 transitions. Word has length 13 [2022-11-02 20:00:24,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:24,087 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 1284 transitions. [2022-11-02 20:00:24,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1284 transitions. [2022-11-02 20:00:24,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:00:24,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:24,088 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:24,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:24,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:24,303 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash 969895921, now seen corresponding path program 3 times [2022-11-02 20:00:24,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:24,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321051272] [2022-11-02 20:00:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:24,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:24,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:24,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321051272] [2022-11-02 20:00:24,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321051272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:24,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504213458] [2022-11-02 20:00:24,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:00:24,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:24,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:24,441 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:24,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-02 20:00:24,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:00:24,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:24,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:00:24,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:24,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:24,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504213458] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:24,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:24,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-11-02 20:00:24,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088714025] [2022-11-02 20:00:24,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:24,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:00:24,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:24,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:00:24,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:00:24,980 INFO L87 Difference]: Start difference. First operand 403 states and 1284 transitions. Second operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 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 20:00:25,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:25,237 INFO L93 Difference]: Finished difference Result 464 states and 1429 transitions. [2022-11-02 20:00:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:00:25,238 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 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 14 [2022-11-02 20:00:25,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:25,239 INFO L225 Difference]: With dead ends: 464 [2022-11-02 20:00:25,239 INFO L226 Difference]: Without dead ends: 381 [2022-11-02 20:00:25,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:00:25,240 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 98 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:25,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 39 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:00:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-02 20:00:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-11-02 20:00:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 366 states have (on average 3.341530054644809) internal successors, (1223), 380 states have internal predecessors, (1223), 0 states have call successors, (0), 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 20:00:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1223 transitions. [2022-11-02 20:00:25,250 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1223 transitions. Word has length 14 [2022-11-02 20:00:25,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:25,251 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 1223 transitions. [2022-11-02 20:00:25,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 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 20:00:25,251 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1223 transitions. [2022-11-02 20:00:25,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:00:25,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:25,252 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:25,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:25,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-11-02 20:00:25,457 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:25,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:25,457 INFO L85 PathProgramCache]: Analyzing trace with hash 416478133, now seen corresponding path program 4 times [2022-11-02 20:00:25,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:25,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045850947] [2022-11-02 20:00:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:25,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:25,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:25,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045850947] [2022-11-02 20:00:25,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045850947] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:25,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437368158] [2022-11-02 20:00:25,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:00:25,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:25,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:25,868 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:25,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-02 20:00:26,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:00:26,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:26,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-02 20:00:26,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:26,216 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 13 treesize of output 9 [2022-11-02 20:00:26,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:26,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:26,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:26,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:26,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:26,482 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1559 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1559) c_~A~0.base) (+ c_~A~0.offset 12)) 4294967296))) is different from false [2022-11-02 20:00:26,494 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1559 (Array Int Int)) (v_ArrVal_1558 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1558) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1559) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296))) is different from false [2022-11-02 20:00:26,505 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:26,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:00:26,513 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:26,514 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 81 treesize of output 77 [2022-11-02 20:00:26,519 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 32 treesize of output 28 [2022-11-02 20:00:26,524 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 58 treesize of output 50 [2022-11-02 20:00:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-02 20:00:26,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437368158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:26,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:26,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-11-02 20:00:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610863478] [2022-11-02 20:00:26,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:26,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:00:26,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:26,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:00:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=624, Unknown=2, NotChecked=102, Total=812 [2022-11-02 20:00:26,598 INFO L87 Difference]: Start difference. First operand 381 states and 1223 transitions. Second operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:27,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:27,258 INFO L93 Difference]: Finished difference Result 549 states and 1664 transitions. [2022-11-02 20:00:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:00:27,259 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 20:00:27,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:27,261 INFO L225 Difference]: With dead ends: 549 [2022-11-02 20:00:27,261 INFO L226 Difference]: Without dead ends: 549 [2022-11-02 20:00:27,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=965, Unknown=2, NotChecked=130, Total=1260 [2022-11-02 20:00:27,262 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 234 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:27,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 58 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 647 Invalid, 0 Unknown, 79 Unchecked, 0.5s Time] [2022-11-02 20:00:27,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-02 20:00:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 423. [2022-11-02 20:00:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 408 states have (on average 3.4705882352941178) internal successors, (1416), 422 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1416 transitions. [2022-11-02 20:00:27,281 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1416 transitions. Word has length 14 [2022-11-02 20:00:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:27,281 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 1416 transitions. [2022-11-02 20:00:27,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1416 transitions. [2022-11-02 20:00:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:00:27,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:27,282 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:27,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-11-02 20:00:27,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-02 20:00:27,482 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:27,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash 416478137, now seen corresponding path program 4 times [2022-11-02 20:00:27,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:27,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304805917] [2022-11-02 20:00:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:27,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:27,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304805917] [2022-11-02 20:00:27,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304805917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:27,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977587199] [2022-11-02 20:00:27,873 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:00:27,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:27,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:27,874 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:27,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-02 20:00:28,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:00:28,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:28,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-02 20:00:28,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:28,208 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 13 treesize of output 9 [2022-11-02 20:00:28,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:28,257 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 20:00:28,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:28,290 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 20:00:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:28,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:28,476 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1605 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1605) c_~A~0.base) (+ c_~A~0.offset 12)) 9223372039002259456)) is different from false [2022-11-02 20:00:28,484 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1604 (Array Int Int)) (v_ArrVal_1605 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1604) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1605) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 12 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) is different from false [2022-11-02 20:00:28,492 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:28,492 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 27 treesize of output 28 [2022-11-02 20:00:28,499 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:28,499 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 71 treesize of output 67 [2022-11-02 20:00:28,503 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 54 treesize of output 46 [2022-11-02 20:00:28,507 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 24 treesize of output 20 [2022-11-02 20:00:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-02 20:00:28,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977587199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:28,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:28,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-11-02 20:00:28,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304214849] [2022-11-02 20:00:28,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:28,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:00:28,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:00:28,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=624, Unknown=2, NotChecked=102, Total=812 [2022-11-02 20:00:28,570 INFO L87 Difference]: Start difference. First operand 423 states and 1416 transitions. Second operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:29,290 INFO L93 Difference]: Finished difference Result 511 states and 1538 transitions. [2022-11-02 20:00:29,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:00:29,291 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 20:00:29,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:29,293 INFO L225 Difference]: With dead ends: 511 [2022-11-02 20:00:29,293 INFO L226 Difference]: Without dead ends: 511 [2022-11-02 20:00:29,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=965, Unknown=2, NotChecked=130, Total=1260 [2022-11-02 20:00:29,293 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 185 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:29,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 68 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 761 Invalid, 0 Unknown, 111 Unchecked, 0.5s Time] [2022-11-02 20:00:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2022-11-02 20:00:29,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 423. [2022-11-02 20:00:29,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 408 states have (on average 3.3676470588235294) internal successors, (1374), 422 states have internal predecessors, (1374), 0 states have call successors, (0), 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 20:00:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1374 transitions. [2022-11-02 20:00:29,305 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1374 transitions. Word has length 14 [2022-11-02 20:00:29,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:29,306 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 1374 transitions. [2022-11-02 20:00:29,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:29,306 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1374 transitions. [2022-11-02 20:00:29,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:00:29,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:29,307 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1] [2022-11-02 20:00:29,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-11-02 20:00:29,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:29,523 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:29,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:29,523 INFO L85 PathProgramCache]: Analyzing trace with hash -997211837, now seen corresponding path program 6 times [2022-11-02 20:00:29,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:29,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673877678] [2022-11-02 20:00:29,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:29,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:29,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:29,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673877678] [2022-11-02 20:00:29,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673877678] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:29,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142671799] [2022-11-02 20:00:29,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:00:29,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:29,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:29,968 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:29,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-02 20:00:30,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-02 20:00:30,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:30,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-02 20:00:30,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:30,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:00:30,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:30,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:30,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:31,196 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:31,196 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 26 treesize of output 27 [2022-11-02 20:00:31,205 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:31,205 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 41 treesize of output 37 [2022-11-02 20:00:31,210 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 13 treesize of output 7 [2022-11-02 20:00:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:31,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142671799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:31,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:31,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2022-11-02 20:00:31,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570138012] [2022-11-02 20:00:31,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:31,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 20:00:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 20:00:31,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:00:31,621 INFO L87 Difference]: Start difference. First operand 423 states and 1374 transitions. Second operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:32,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:32,145 INFO L93 Difference]: Finished difference Result 433 states and 1404 transitions. [2022-11-02 20:00:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:00:32,146 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 20:00:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:32,148 INFO L225 Difference]: With dead ends: 433 [2022-11-02 20:00:32,148 INFO L226 Difference]: Without dead ends: 433 [2022-11-02 20:00:32,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=283, Invalid=2167, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 20:00:32,149 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:32,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 43 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-11-02 20:00:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-02 20:00:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2022-11-02 20:00:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 418 states have (on average 3.3588516746411483) internal successors, (1404), 432 states have internal predecessors, (1404), 0 states have call successors, (0), 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 20:00:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 1404 transitions. [2022-11-02 20:00:32,160 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 1404 transitions. Word has length 14 [2022-11-02 20:00:32,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:32,160 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 1404 transitions. [2022-11-02 20:00:32,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:32,161 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 1404 transitions. [2022-11-02 20:00:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:00:32,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:32,162 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1] [2022-11-02 20:00:32,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:32,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:32,367 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:32,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:32,367 INFO L85 PathProgramCache]: Analyzing trace with hash -997211835, now seen corresponding path program 5 times [2022-11-02 20:00:32,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:32,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643695936] [2022-11-02 20:00:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:32,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:32,863 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:32,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:32,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643695936] [2022-11-02 20:00:32,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643695936] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:32,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249112608] [2022-11-02 20:00:32,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:00:32,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:32,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:32,865 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:32,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-02 20:00:33,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-02 20:00:33,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:33,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-02 20:00:33,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:33,246 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 13 treesize of output 9 [2022-11-02 20:00:33,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:33,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:33,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:33,639 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1695 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1695) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2022-11-02 20:00:33,648 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:33,648 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 26 treesize of output 27 [2022-11-02 20:00:33,666 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:33,667 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 43 treesize of output 39 [2022-11-02 20:00:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-02 20:00:33,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249112608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:33,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:33,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2022-11-02 20:00:33,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788171837] [2022-11-02 20:00:33,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:33,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 20:00:33,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:33,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 20:00:33,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1225, Unknown=1, NotChecked=70, Total=1406 [2022-11-02 20:00:33,859 INFO L87 Difference]: Start difference. First operand 433 states and 1404 transitions. Second operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:35,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:35,132 INFO L93 Difference]: Finished difference Result 489 states and 1492 transitions. [2022-11-02 20:00:35,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:00:35,132 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 20:00:35,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:35,134 INFO L225 Difference]: With dead ends: 489 [2022-11-02 20:00:35,134 INFO L226 Difference]: Without dead ends: 489 [2022-11-02 20:00:35,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=231, Invalid=2322, Unknown=1, NotChecked=98, Total=2652 [2022-11-02 20:00:35,135 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 89 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:35,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 74 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1087 Invalid, 0 Unknown, 55 Unchecked, 0.6s Time] [2022-11-02 20:00:35,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-11-02 20:00:35,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 433. [2022-11-02 20:00:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 418 states have (on average 3.354066985645933) internal successors, (1402), 432 states have internal predecessors, (1402), 0 states have call successors, (0), 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 20:00:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 1402 transitions. [2022-11-02 20:00:35,146 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 1402 transitions. Word has length 14 [2022-11-02 20:00:35,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:35,146 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 1402 transitions. [2022-11-02 20:00:35,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 1402 transitions. [2022-11-02 20:00:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:00:35,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:35,147 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:35,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:35,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-11-02 20:00:35,363 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:35,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:35,363 INFO L85 PathProgramCache]: Analyzing trace with hash 25923808, now seen corresponding path program 5 times [2022-11-02 20:00:35,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:35,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326230670] [2022-11-02 20:00:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:35,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:35,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:35,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326230670] [2022-11-02 20:00:35,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326230670] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:35,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172307977] [2022-11-02 20:00:35,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:00:35,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:35,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:35,555 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:35,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-02 20:00:35,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-02 20:00:35,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:35,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:00:35,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:36,001 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:36,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:36,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172307977] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:36,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:36,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-11-02 20:00:36,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16510867] [2022-11-02 20:00:36,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:36,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:00:36,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:36,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:00:36,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:00:36,136 INFO L87 Difference]: Start difference. First operand 433 states and 1402 transitions. Second operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 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 20:00:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:36,397 INFO L93 Difference]: Finished difference Result 409 states and 1302 transitions. [2022-11-02 20:00:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:00:36,397 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 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 15 [2022-11-02 20:00:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:36,398 INFO L225 Difference]: With dead ends: 409 [2022-11-02 20:00:36,399 INFO L226 Difference]: Without dead ends: 298 [2022-11-02 20:00:36,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 20:00:36,399 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 122 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:36,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 41 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:00:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-02 20:00:36,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-11-02 20:00:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 283 states have (on average 3.5759717314487633) internal successors, (1012), 297 states have internal predecessors, (1012), 0 states have call successors, (0), 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 20:00:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 1012 transitions. [2022-11-02 20:00:36,408 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 1012 transitions. Word has length 15 [2022-11-02 20:00:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:36,408 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 1012 transitions. [2022-11-02 20:00:36,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 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 20:00:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 1012 transitions. [2022-11-02 20:00:36,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:00:36,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:36,409 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2022-11-02 20:00:36,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:36,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-11-02 20:00:36,635 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:36,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:36,635 INFO L85 PathProgramCache]: Analyzing trace with hash -848792536, now seen corresponding path program 6 times [2022-11-02 20:00:36,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:36,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475166240] [2022-11-02 20:00:36,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:36,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:36,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:36,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475166240] [2022-11-02 20:00:36,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475166240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:36,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762980931] [2022-11-02 20:00:36,845 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:00:36,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:36,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:36,849 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:36,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-02 20:00:37,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-02 20:00:37,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:37,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:00:37,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:37,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:37,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762980931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:37,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:37,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-11-02 20:00:37,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666941110] [2022-11-02 20:00:37,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:37,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 20:00:37,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:37,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 20:00:37,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:00:37,572 INFO L87 Difference]: Start difference. First operand 298 states and 1012 transitions. Second operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:38,300 INFO L93 Difference]: Finished difference Result 672 states and 1931 transitions. [2022-11-02 20:00:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:00:38,300 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:00:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:38,302 INFO L225 Difference]: With dead ends: 672 [2022-11-02 20:00:38,302 INFO L226 Difference]: Without dead ends: 670 [2022-11-02 20:00:38,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=544, Invalid=1526, Unknown=0, NotChecked=0, Total=2070 [2022-11-02 20:00:38,303 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 218 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:38,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 108 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:00:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-02 20:00:38,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 480. [2022-11-02 20:00:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 465 states have (on average 3.475268817204301) internal successors, (1616), 479 states have internal predecessors, (1616), 0 states have call successors, (0), 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 20:00:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1616 transitions. [2022-11-02 20:00:38,316 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1616 transitions. Word has length 15 [2022-11-02 20:00:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:38,316 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 1616 transitions. [2022-11-02 20:00:38,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:38,317 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1616 transitions. [2022-11-02 20:00:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:00:38,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:38,318 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:38,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:38,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:38,523 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:38,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:38,524 INFO L85 PathProgramCache]: Analyzing trace with hash -848792786, now seen corresponding path program 5 times [2022-11-02 20:00:38,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:38,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418887482] [2022-11-02 20:00:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:38,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:39,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:39,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418887482] [2022-11-02 20:00:39,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418887482] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:39,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755511268] [2022-11-02 20:00:39,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:00:39,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:39,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:39,107 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:39,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-02 20:00:39,373 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-02 20:00:39,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:39,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 20:00:39,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:39,513 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 13 treesize of output 9 [2022-11-02 20:00:39,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:39,572 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 20:00:39,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:39,785 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 20:00:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:39,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:39,849 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1829 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1829) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296)) is different from false [2022-11-02 20:00:39,854 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1829 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1829) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 4)) 4294967296)) is different from false [2022-11-02 20:00:39,859 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1829 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1829) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 4294967296)) is different from false [2022-11-02 20:00:39,863 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1829 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1829) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 12)) 4294967296)) is different from false [2022-11-02 20:00:39,868 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1829 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1829) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 16)) 4294967296)) is different from false [2022-11-02 20:00:39,873 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1829 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1829) c_~A~0.base) (+ c_~A~0.offset 16)) 4294967296)) is different from false [2022-11-02 20:00:39,880 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1829 (Array Int Int)) (v_ArrVal_1828 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1828) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1829) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) is different from false [2022-11-02 20:00:39,888 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:39,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-11-02 20:00:39,895 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:39,896 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 71 treesize of output 67 [2022-11-02 20:00:39,902 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 28 treesize of output 24 [2022-11-02 20:00:39,913 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 50 treesize of output 42 [2022-11-02 20:00:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2022-11-02 20:00:40,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755511268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:40,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:40,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2022-11-02 20:00:40,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036013258] [2022-11-02 20:00:40,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:40,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 20:00:40,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:40,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 20:00:40,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=733, Unknown=7, NotChecked=420, Total=1260 [2022-11-02 20:00:40,004 INFO L87 Difference]: Start difference. First operand 480 states and 1616 transitions. Second operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 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 20:00:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:41,220 INFO L93 Difference]: Finished difference Result 808 states and 2166 transitions. [2022-11-02 20:00:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:00:41,221 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 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 15 [2022-11-02 20:00:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:41,223 INFO L225 Difference]: With dead ends: 808 [2022-11-02 20:00:41,223 INFO L226 Difference]: Without dead ends: 808 [2022-11-02 20:00:41,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=1178, Unknown=7, NotChecked=532, Total=1892 [2022-11-02 20:00:41,224 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 163 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:41,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 118 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1444 Invalid, 0 Unknown, 384 Unchecked, 0.9s Time] [2022-11-02 20:00:41,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-02 20:00:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 467. [2022-11-02 20:00:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 452 states have (on average 3.411504424778761) internal successors, (1542), 466 states have internal predecessors, (1542), 0 states have call successors, (0), 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 20:00:41,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1542 transitions. [2022-11-02 20:00:41,235 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 1542 transitions. Word has length 15 [2022-11-02 20:00:41,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:41,236 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 1542 transitions. [2022-11-02 20:00:41,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 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 20:00:41,236 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1542 transitions. [2022-11-02 20:00:41,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:00:41,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:41,237 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:41,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:41,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:41,451 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:41,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:41,451 INFO L85 PathProgramCache]: Analyzing trace with hash -848792784, now seen corresponding path program 6 times [2022-11-02 20:00:41,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:41,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487992371] [2022-11-02 20:00:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:41,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:42,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:42,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487992371] [2022-11-02 20:00:42,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487992371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:42,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265460128] [2022-11-02 20:00:42,044 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:00:42,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:42,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:42,045 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:42,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-02 20:00:42,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-02 20:00:42,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:42,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-02 20:00:42,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:42,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:00:42,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:42,640 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 20 treesize of output 22 [2022-11-02 20:00:42,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:42,975 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 20 treesize of output 22 [2022-11-02 20:00:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:43,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:43,065 WARN L833 $PredicateComparison]: unable to prove that (or (not (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0)) (forall ((v_ArrVal_1879 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1879) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 9223372039002259456)))) is different from false [2022-11-02 20:00:43,431 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:43,431 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 20:00:43,441 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:43,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 163 [2022-11-02 20:00:43,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 134 [2022-11-02 20:00:43,455 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 134 treesize of output 110 [2022-11-02 20:00:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:43,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265460128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:43,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:43,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-11-02 20:00:43,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104598231] [2022-11-02 20:00:43,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:43,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-02 20:00:43,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:43,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-02 20:00:43,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1386, Unknown=2, NotChecked=76, Total=1640 [2022-11-02 20:00:43,991 INFO L87 Difference]: Start difference. First operand 467 states and 1542 transitions. Second operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:44,741 WARN L833 $PredicateComparison]: unable to prove that (and (or (not (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0)) (forall ((v_ArrVal_1879 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1879) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 9223372039002259456)))) (forall ((|v_thread1Thread1of1ForFork1_~i~0#1_265| Int)) (or (not (< |v_thread1Thread1of1ForFork1_~i~0#1_265| c_~N~0)) (not (<= (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) |v_thread1Thread1of1ForFork1_~i~0#1_265|)) (forall ((v_ArrVal_1879 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1879) c_~A~0.base) (+ c_~A~0.offset (* |v_thread1Thread1of1ForFork1_~i~0#1_265| 4))) 9223372039002259456)))))) is different from false [2022-11-02 20:00:44,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:44,820 INFO L93 Difference]: Finished difference Result 470 states and 1549 transitions. [2022-11-02 20:00:44,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:00:44,821 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 20:00:44,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:44,823 INFO L225 Difference]: With dead ends: 470 [2022-11-02 20:00:44,823 INFO L226 Difference]: Without dead ends: 470 [2022-11-02 20:00:44,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=311, Invalid=2450, Unknown=3, NotChecked=206, Total=2970 [2022-11-02 20:00:44,823 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:44,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 236 Invalid, 0 Unknown, 91 Unchecked, 0.2s Time] [2022-11-02 20:00:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-11-02 20:00:44,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 468. [2022-11-02 20:00:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 453 states have (on average 3.410596026490066) internal successors, (1545), 467 states have internal predecessors, (1545), 0 states have call successors, (0), 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 20:00:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1545 transitions. [2022-11-02 20:00:44,834 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1545 transitions. Word has length 15 [2022-11-02 20:00:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:44,835 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 1545 transitions. [2022-11-02 20:00:44,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:00:44,835 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1545 transitions. [2022-11-02 20:00:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:00:44,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:44,836 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:44,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:45,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:45,036 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:45,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:45,037 INFO L85 PathProgramCache]: Analyzing trace with hash -848800224, now seen corresponding path program 7 times [2022-11-02 20:00:45,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:45,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334039596] [2022-11-02 20:00:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:45,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:45,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:45,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334039596] [2022-11-02 20:00:45,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334039596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:45,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570924074] [2022-11-02 20:00:45,744 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:00:45,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:45,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:45,746 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:45,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-02 20:00:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:46,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 20:00:46,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:46,257 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 13 treesize of output 9 [2022-11-02 20:00:46,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:46,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:46,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:46,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:46,527 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:46,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:46,583 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1929 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1929) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 4)) 9223372039002259456))) is different from false [2022-11-02 20:00:46,588 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1929 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1929) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 9223372039002259456))) is different from false [2022-11-02 20:00:46,593 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1929 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1929) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 12)) 9223372039002259456))) is different from false [2022-11-02 20:00:46,598 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1929 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1929) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 16)) 9223372039002259456))) is different from false [2022-11-02 20:00:46,602 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1929 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1929) c_~A~0.base) (+ c_~A~0.offset 16)) 9223372039002259456))) is different from false [2022-11-02 20:00:46,610 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1928) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1929) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2022-11-02 20:00:46,623 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:46,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:00:46,631 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:46,632 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 81 treesize of output 77 [2022-11-02 20:00:46,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-11-02 20:00:46,640 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 58 treesize of output 50 [2022-11-02 20:00:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2022-11-02 20:00:46,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570924074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:46,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:46,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2022-11-02 20:00:46,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471622726] [2022-11-02 20:00:46,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:46,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 20:00:46,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:46,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 20:00:46,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=788, Unknown=6, NotChecked=366, Total=1260 [2022-11-02 20:00:46,715 INFO L87 Difference]: Start difference. First operand 468 states and 1545 transitions. Second operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 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 20:00:47,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:47,855 INFO L93 Difference]: Finished difference Result 775 states and 2057 transitions. [2022-11-02 20:00:47,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:00:47,855 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 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 15 [2022-11-02 20:00:47,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:47,858 INFO L225 Difference]: With dead ends: 775 [2022-11-02 20:00:47,858 INFO L226 Difference]: Without dead ends: 763 [2022-11-02 20:00:47,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=1249, Unknown=6, NotChecked=462, Total=1892 [2022-11-02 20:00:47,859 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 226 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 458 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:47,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 101 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1265 Invalid, 0 Unknown, 458 Unchecked, 0.8s Time] [2022-11-02 20:00:47,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-11-02 20:00:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 442. [2022-11-02 20:00:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 427 states have (on average 3.262295081967213) internal successors, (1393), 441 states have internal predecessors, (1393), 0 states have call successors, (0), 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 20:00:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1393 transitions. [2022-11-02 20:00:47,871 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1393 transitions. Word has length 15 [2022-11-02 20:00:47,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:47,871 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 1393 transitions. [2022-11-02 20:00:47,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 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 20:00:47,872 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1393 transitions. [2022-11-02 20:00:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:00:47,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:47,873 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:47,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:48,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:48,095 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:48,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:48,095 INFO L85 PathProgramCache]: Analyzing trace with hash 785848014, now seen corresponding path program 6 times [2022-11-02 20:00:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:48,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513360217] [2022-11-02 20:00:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:48,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:48,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:48,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513360217] [2022-11-02 20:00:48,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513360217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:48,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819813974] [2022-11-02 20:00:48,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:00:48,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:48,955 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:48,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-02 20:00:49,411 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-02 20:00:49,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:49,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-02 20:00:49,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:49,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:00:49,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:49,691 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 20 treesize of output 22 [2022-11-02 20:00:49,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:49,763 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 20 treesize of output 22 [2022-11-02 20:00:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:50,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:50,587 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:50,587 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 20:00:50,600 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:50,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 163 [2022-11-02 20:00:50,609 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 73 treesize of output 61 [2022-11-02 20:00:50,615 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 134 treesize of output 110 [2022-11-02 20:00:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:51,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819813974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:51,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:51,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-11-02 20:00:51,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358340513] [2022-11-02 20:00:51,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:51,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-02 20:00:51,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:51,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-02 20:00:51,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1466, Unknown=2, NotChecked=0, Total=1640 [2022-11-02 20:00:51,143 INFO L87 Difference]: Start difference. First operand 442 states and 1393 transitions. Second operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 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 20:00:52,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:52,008 INFO L93 Difference]: Finished difference Result 486 states and 1477 transitions. [2022-11-02 20:00:52,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:00:52,009 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:00:52,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:52,010 INFO L225 Difference]: With dead ends: 486 [2022-11-02 20:00:52,011 INFO L226 Difference]: Without dead ends: 486 [2022-11-02 20:00:52,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=302, Invalid=2558, Unknown=2, NotChecked=0, Total=2862 [2022-11-02 20:00:52,012 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:52,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 167 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 239 Invalid, 0 Unknown, 87 Unchecked, 0.2s Time] [2022-11-02 20:00:52,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-02 20:00:52,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 440. [2022-11-02 20:00:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 425 states have (on average 3.2611764705882353) internal successors, (1386), 439 states have internal predecessors, (1386), 0 states have call successors, (0), 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 20:00:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1386 transitions. [2022-11-02 20:00:52,023 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1386 transitions. Word has length 16 [2022-11-02 20:00:52,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:52,023 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 1386 transitions. [2022-11-02 20:00:52,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 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 20:00:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1386 transitions. [2022-11-02 20:00:52,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:00:52,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:52,024 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:00:52,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-11-02 20:00:52,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-11-02 20:00:52,238 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:52,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:52,239 INFO L85 PathProgramCache]: Analyzing trace with hash 785848018, now seen corresponding path program 5 times [2022-11-02 20:00:52,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:52,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548070681] [2022-11-02 20:00:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:52,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:52,737 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:52,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:52,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548070681] [2022-11-02 20:00:52,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548070681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:52,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014258611] [2022-11-02 20:00:52,738 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:00:52,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:52,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:52,739 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:52,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-11-02 20:00:53,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-02 20:00:53,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:00:53,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 20:00:53,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:53,260 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 13 treesize of output 9 [2022-11-02 20:00:53,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:53,297 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 20:00:53,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:53,331 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 20:00:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:53,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:53,624 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2029 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2029) c_~A~0.base) (+ c_~A~0.offset 16)) 9223372039002259456)) is different from false [2022-11-02 20:00:53,633 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2029 (Array Int Int)) (v_ArrVal_2028 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2028) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2029) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) is different from false [2022-11-02 20:00:53,642 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:53,642 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 27 treesize of output 28 [2022-11-02 20:00:53,650 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:53,651 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 71 treesize of output 67 [2022-11-02 20:00:53,658 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 28 treesize of output 24 [2022-11-02 20:00:53,662 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 50 treesize of output 42 [2022-11-02 20:00:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-02 20:00:53,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014258611] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:53,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:53,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-11-02 20:00:53,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432253748] [2022-11-02 20:00:53,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:53,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 20:00:53,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:53,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 20:00:53,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=898, Unknown=2, NotChecked=122, Total=1122 [2022-11-02 20:00:53,750 INFO L87 Difference]: Start difference. First operand 440 states and 1386 transitions. Second operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 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 20:00:54,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:54,586 INFO L93 Difference]: Finished difference Result 632 states and 1847 transitions. [2022-11-02 20:00:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:00:54,586 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:00:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:54,588 INFO L225 Difference]: With dead ends: 632 [2022-11-02 20:00:54,588 INFO L226 Difference]: Without dead ends: 632 [2022-11-02 20:00:54,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=191, Invalid=1375, Unknown=2, NotChecked=154, Total=1722 [2022-11-02 20:00:54,588 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 219 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 193 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:54,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 79 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 904 Invalid, 0 Unknown, 193 Unchecked, 0.6s Time] [2022-11-02 20:00:54,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-11-02 20:00:54,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 484. [2022-11-02 20:00:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 469 states have (on average 3.373134328358209) internal successors, (1582), 483 states have internal predecessors, (1582), 0 states have call successors, (0), 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 20:00:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1582 transitions. [2022-11-02 20:00:54,598 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1582 transitions. Word has length 16 [2022-11-02 20:00:54,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:54,598 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 1582 transitions. [2022-11-02 20:00:54,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 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 20:00:54,598 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1582 transitions. [2022-11-02 20:00:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:00:54,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:54,599 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1] [2022-11-02 20:00:54,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:54,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-11-02 20:00:54,819 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash -88868332, now seen corresponding path program 7 times [2022-11-02 20:00:54,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:54,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388510831] [2022-11-02 20:00:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:54,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:55,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:55,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388510831] [2022-11-02 20:00:55,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388510831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:55,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505392061] [2022-11-02 20:00:55,314 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:00:55,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:55,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:55,315 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:55,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-02 20:00:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:55,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 20:00:55,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:55,771 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 13 treesize of output 9 [2022-11-02 20:00:55,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:55,807 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 20:00:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:56,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:56,264 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2078 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2078) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 20 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) is different from false [2022-11-02 20:00:56,279 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:56,279 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 24 treesize of output 25 [2022-11-02 20:00:56,300 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:56,300 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 37 treesize of output 33 [2022-11-02 20:00:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-02 20:00:56,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505392061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:56,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:56,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2022-11-02 20:00:56,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308068478] [2022-11-02 20:00:56,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:56,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-02 20:00:56,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:56,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-02 20:00:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1681, Unknown=1, NotChecked=82, Total=1892 [2022-11-02 20:00:56,519 INFO L87 Difference]: Start difference. First operand 484 states and 1582 transitions. Second operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 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 20:00:57,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:00:57,956 INFO L93 Difference]: Finished difference Result 545 states and 1686 transitions. [2022-11-02 20:00:57,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:00:57,956 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:00:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:00:57,958 INFO L225 Difference]: With dead ends: 545 [2022-11-02 20:00:57,958 INFO L226 Difference]: Without dead ends: 545 [2022-11-02 20:00:57,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=266, Invalid=3159, Unknown=1, NotChecked=114, Total=3540 [2022-11-02 20:00:57,959 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 93 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:00:57,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 77 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1322 Invalid, 0 Unknown, 61 Unchecked, 0.7s Time] [2022-11-02 20:00:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-02 20:00:57,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 484. [2022-11-02 20:00:57,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 469 states have (on average 3.371002132196162) internal successors, (1581), 483 states have internal predecessors, (1581), 0 states have call successors, (0), 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 20:00:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1581 transitions. [2022-11-02 20:00:57,971 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1581 transitions. Word has length 16 [2022-11-02 20:00:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:00:57,971 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 1581 transitions. [2022-11-02 20:00:57,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 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 20:00:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1581 transitions. [2022-11-02 20:00:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:00:57,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:00:57,973 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1] [2022-11-02 20:00:58,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:00:58,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-11-02 20:00:58,190 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:00:58,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:00:58,190 INFO L85 PathProgramCache]: Analyzing trace with hash -88868330, now seen corresponding path program 7 times [2022-11-02 20:00:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:00:58,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360644338] [2022-11-02 20:00:58,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:00:58,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:00:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:58,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:00:58,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360644338] [2022-11-02 20:00:58,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360644338] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:00:58,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359181802] [2022-11-02 20:00:58,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:00:58,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:00:58,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:00:58,731 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:00:58,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-11-02 20:00:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:00:59,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 20:00:59,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:00:59,227 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 13 treesize of output 9 [2022-11-02 20:00:59,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:00:59,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:00:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:00:59,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:00:59,645 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2127 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2127) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 20 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2022-11-02 20:00:59,653 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:59,653 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 26 treesize of output 27 [2022-11-02 20:00:59,659 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:00:59,660 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 43 treesize of output 39 [2022-11-02 20:00:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-02 20:00:59,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359181802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:00:59,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:00:59,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2022-11-02 20:00:59,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434823289] [2022-11-02 20:00:59,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:00:59,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 20:00:59,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:00:59,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 20:00:59,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1088, Unknown=1, NotChecked=66, Total=1260 [2022-11-02 20:00:59,702 INFO L87 Difference]: Start difference. First operand 484 states and 1581 transitions. Second operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 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 20:01:00,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:00,513 INFO L93 Difference]: Finished difference Result 544 states and 1684 transitions. [2022-11-02 20:01:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:01:00,513 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 20:01:00,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:00,515 INFO L225 Difference]: With dead ends: 544 [2022-11-02 20:01:00,515 INFO L226 Difference]: Without dead ends: 544 [2022-11-02 20:01:00,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=190, Invalid=1705, Unknown=1, NotChecked=84, Total=1980 [2022-11-02 20:01:00,516 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 87 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:00,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 62 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1067 Invalid, 0 Unknown, 64 Unchecked, 0.6s Time] [2022-11-02 20:01:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-11-02 20:01:00,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 484. [2022-11-02 20:01:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 469 states have (on average 3.368869936034115) internal successors, (1580), 483 states have internal predecessors, (1580), 0 states have call successors, (0), 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 20:01:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1580 transitions. [2022-11-02 20:01:00,525 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1580 transitions. Word has length 16 [2022-11-02 20:01:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:00,525 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 1580 transitions. [2022-11-02 20:01:00,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 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 20:01:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1580 transitions. [2022-11-02 20:01:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:01:00,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:00,527 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:00,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-11-02 20:01:00,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:00,735 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:00,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1450223132, now seen corresponding path program 4 times [2022-11-02 20:01:00,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:00,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380345693] [2022-11-02 20:01:00,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:00,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:01,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:01,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380345693] [2022-11-02 20:01:01,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380345693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:01,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115322557] [2022-11-02 20:01:01,257 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:01:01,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:01,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:01,258 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:01,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-02 20:01:01,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:01:01,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:01,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-02 20:01:01,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:01,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:01:01,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:01,818 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 20 treesize of output 22 [2022-11-02 20:01:01,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:01,875 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 20 treesize of output 22 [2022-11-02 20:01:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:02,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:02,614 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:02,615 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 20:01:02,624 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:02,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 163 [2022-11-02 20:01:02,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 122 [2022-11-02 20:01:02,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2022-11-02 20:01:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:03,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115322557] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:03,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:03,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-11-02 20:01:03,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955899469] [2022-11-02 20:01:03,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:03,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-02 20:01:03,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:03,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-02 20:01:03,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1460, Unknown=8, NotChecked=0, Total=1640 [2022-11-02 20:01:03,153 INFO L87 Difference]: Start difference. First operand 484 states and 1580 transitions. Second operand has 41 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:01:03,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:03,954 INFO L93 Difference]: Finished difference Result 550 states and 1725 transitions. [2022-11-02 20:01:03,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:01:03,955 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 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 17 [2022-11-02 20:01:03,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:03,956 INFO L225 Difference]: With dead ends: 550 [2022-11-02 20:01:03,956 INFO L226 Difference]: Without dead ends: 550 [2022-11-02 20:01:03,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=302, Invalid=2551, Unknown=9, NotChecked=0, Total=2862 [2022-11-02 20:01:03,957 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 46 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:03,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 163 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 236 Invalid, 0 Unknown, 68 Unchecked, 0.2s Time] [2022-11-02 20:01:03,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-11-02 20:01:03,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 496. [2022-11-02 20:01:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 481 states have (on average 3.3513513513513513) internal successors, (1612), 495 states have internal predecessors, (1612), 0 states have call successors, (0), 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 20:01:03,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1612 transitions. [2022-11-02 20:01:03,969 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1612 transitions. Word has length 17 [2022-11-02 20:01:03,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:03,970 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 1612 transitions. [2022-11-02 20:01:03,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:01:03,970 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1612 transitions. [2022-11-02 20:01:03,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:01:03,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:03,971 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:04,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-11-02 20:01:04,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-11-02 20:01:04,187 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:04,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:04,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1408511765, now seen corresponding path program 6 times [2022-11-02 20:01:04,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:04,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585080074] [2022-11-02 20:01:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:04,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:04,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:04,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585080074] [2022-11-02 20:01:04,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585080074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:04,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677538076] [2022-11-02 20:01:04,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:01:04,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:04,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:04,381 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:04,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-02 20:01:04,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-02 20:01:04,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:04,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:01:04,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:05,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:05,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677538076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:05,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:05,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-11-02 20:01:05,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771660925] [2022-11-02 20:01:05,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:05,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 20:01:05,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:05,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 20:01:05,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:01:05,219 INFO L87 Difference]: Start difference. First operand 496 states and 1612 transitions. Second operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 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 20:01:05,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:05,621 INFO L93 Difference]: Finished difference Result 486 states and 1528 transitions. [2022-11-02 20:01:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:01:05,622 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 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 17 [2022-11-02 20:01:05,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:05,623 INFO L225 Difference]: With dead ends: 486 [2022-11-02 20:01:05,623 INFO L226 Difference]: Without dead ends: 466 [2022-11-02 20:01:05,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=417, Invalid=1223, Unknown=0, NotChecked=0, Total=1640 [2022-11-02 20:01:05,623 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 122 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:05,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 77 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:01:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-02 20:01:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 462. [2022-11-02 20:01:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 447 states have (on average 3.2841163310961967) internal successors, (1468), 461 states have internal predecessors, (1468), 0 states have call successors, (0), 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 20:01:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1468 transitions. [2022-11-02 20:01:05,630 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1468 transitions. Word has length 17 [2022-11-02 20:01:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:05,630 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 1468 transitions. [2022-11-02 20:01:05,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 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 20:01:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1468 transitions. [2022-11-02 20:01:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:01:05,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:05,631 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:05,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-11-02 20:01:05,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:05,835 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1408512730, now seen corresponding path program 5 times [2022-11-02 20:01:05,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:05,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151871954] [2022-11-02 20:01:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:05,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:06,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:06,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151871954] [2022-11-02 20:01:06,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151871954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:06,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981517017] [2022-11-02 20:01:06,406 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:01:06,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:06,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:06,407 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:06,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-11-02 20:01:06,726 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-02 20:01:06,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:06,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 20:01:06,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:06,887 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 13 treesize of output 9 [2022-11-02 20:01:06,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:06,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:06,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:06,966 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 18 treesize of output 20 [2022-11-02 20:01:07,136 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:07,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:07,322 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2273 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2273) c_~A~0.base) (+ c_~A~0.offset 16)) 4294967296))) is different from false [2022-11-02 20:01:07,331 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2272) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2273) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 16 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2022-11-02 20:01:07,339 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:07,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:01:07,349 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:07,349 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 81 treesize of output 77 [2022-11-02 20:01:07,353 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 62 treesize of output 54 [2022-11-02 20:01:07,357 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 28 treesize of output 24 [2022-11-02 20:01:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-02 20:01:07,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981517017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:07,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:07,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2022-11-02 20:01:07,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354533257] [2022-11-02 20:01:07,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:07,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-02 20:01:07,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:07,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-02 20:01:07,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1224, Unknown=2, NotChecked=142, Total=1482 [2022-11-02 20:01:07,575 INFO L87 Difference]: Start difference. First operand 462 states and 1468 transitions. Second operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 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 20:01:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:09,182 INFO L93 Difference]: Finished difference Result 560 states and 1585 transitions. [2022-11-02 20:01:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:01:09,182 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 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 17 [2022-11-02 20:01:09,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:09,183 INFO L225 Difference]: With dead ends: 560 [2022-11-02 20:01:09,184 INFO L226 Difference]: Without dead ends: 425 [2022-11-02 20:01:09,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=242, Invalid=2314, Unknown=2, NotChecked=198, Total=2756 [2022-11-02 20:01:09,184 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 212 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:09,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 124 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1356 Invalid, 0 Unknown, 155 Unchecked, 0.8s Time] [2022-11-02 20:01:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-11-02 20:01:09,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 315. [2022-11-02 20:01:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 300 states have (on average 3.47) internal successors, (1041), 314 states have internal predecessors, (1041), 0 states have call successors, (0), 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 20:01:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 1041 transitions. [2022-11-02 20:01:09,192 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 1041 transitions. Word has length 17 [2022-11-02 20:01:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:09,193 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 1041 transitions. [2022-11-02 20:01:09,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 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 20:01:09,193 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 1041 transitions. [2022-11-02 20:01:09,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:01:09,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:09,194 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1] [2022-11-02 20:01:09,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-11-02 20:01:09,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:09,407 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:09,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:09,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1540052341, now seen corresponding path program 8 times [2022-11-02 20:01:09,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:09,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470537764] [2022-11-02 20:01:09,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:09,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:09,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:09,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470537764] [2022-11-02 20:01:09,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470537764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:09,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829972424] [2022-11-02 20:01:09,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:01:09,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:09,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:09,666 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:09,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-11-02 20:01:10,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:01:10,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:10,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:01:10,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:10,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:10,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829972424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:10,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:10,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-11-02 20:01:10,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128806229] [2022-11-02 20:01:10,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:10,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-02 20:01:10,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:10,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-02 20:01:10,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1117, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 20:01:10,465 INFO L87 Difference]: Start difference. First operand 315 states and 1041 transitions. Second operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 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 20:01:11,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:11,308 INFO L93 Difference]: Finished difference Result 801 states and 2253 transitions. [2022-11-02 20:01:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:01:11,309 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 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 17 [2022-11-02 20:01:11,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:11,311 INFO L225 Difference]: With dead ends: 801 [2022-11-02 20:01:11,311 INFO L226 Difference]: Without dead ends: 799 [2022-11-02 20:01:11,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=713, Invalid=2043, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 20:01:11,311 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 244 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:11,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 131 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:01:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-11-02 20:01:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 551. [2022-11-02 20:01:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 536 states have (on average 3.425373134328358) internal successors, (1836), 550 states have internal predecessors, (1836), 0 states have call successors, (0), 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 20:01:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 1836 transitions. [2022-11-02 20:01:11,321 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 1836 transitions. Word has length 17 [2022-11-02 20:01:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:11,322 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 1836 transitions. [2022-11-02 20:01:11,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 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 20:01:11,322 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 1836 transitions. [2022-11-02 20:01:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:01:11,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:11,323 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:11,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-11-02 20:01:11,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-11-02 20:01:11,531 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:11,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1540052093, now seen corresponding path program 6 times [2022-11-02 20:01:11,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:11,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852842842] [2022-11-02 20:01:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:11,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:12,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:12,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852842842] [2022-11-02 20:01:12,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852842842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:12,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487192846] [2022-11-02 20:01:12,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:01:12,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:12,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:12,054 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:12,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-11-02 20:01:12,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-02 20:01:12,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:12,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:01:12,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:12,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:01:12,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:12,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:13,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:13,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:13,240 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:13,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:13,292 WARN L833 $PredicateComparison]: unable to prove that (or (not (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0)) (forall ((v_ArrVal_2373 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2373) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296))) is different from false [2022-11-02 20:01:13,795 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:13,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:01:13,816 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:13,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 75 [2022-11-02 20:01:13,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-11-02 20:01:13,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-11-02 20:01:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:14,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487192846] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:14,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:14,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-11-02 20:01:14,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423547461] [2022-11-02 20:01:14,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:14,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-02 20:01:14,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:14,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-02 20:01:14,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1848, Unknown=2, NotChecked=88, Total=2162 [2022-11-02 20:01:14,511 INFO L87 Difference]: Start difference. First operand 551 states and 1836 transitions. Second operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:01:15,423 WARN L833 $PredicateComparison]: unable to prove that (and (or (not (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0)) (forall ((v_ArrVal_2373 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2373) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296))) (forall ((|v_thread1Thread1of1ForFork1_~i~0#1_329| Int)) (or (not (< |v_thread1Thread1of1ForFork1_~i~0#1_329| c_~N~0)) (not (<= (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) |v_thread1Thread1of1ForFork1_~i~0#1_329|)) (forall ((v_ArrVal_2373 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2373) c_~A~0.base) (+ c_~A~0.offset (* |v_thread1Thread1of1ForFork1_~i~0#1_329| 4))) 4294967296))))) is different from false [2022-11-02 20:01:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:15,521 INFO L93 Difference]: Finished difference Result 633 states and 2074 transitions. [2022-11-02 20:01:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:01:15,521 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 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 17 [2022-11-02 20:01:15,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:15,523 INFO L225 Difference]: With dead ends: 633 [2022-11-02 20:01:15,523 INFO L226 Difference]: Without dead ends: 633 [2022-11-02 20:01:15,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=413, Invalid=3374, Unknown=3, NotChecked=242, Total=4032 [2022-11-02 20:01:15,524 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 486 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:15,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 76 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 486 Unchecked, 0.2s Time] [2022-11-02 20:01:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-02 20:01:15,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 572. [2022-11-02 20:01:15,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 557 states have (on average 3.4757630161579893) internal successors, (1936), 571 states have internal predecessors, (1936), 0 states have call successors, (0), 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 20:01:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1936 transitions. [2022-11-02 20:01:15,538 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1936 transitions. Word has length 17 [2022-11-02 20:01:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:15,539 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 1936 transitions. [2022-11-02 20:01:15,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:01:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1936 transitions. [2022-11-02 20:01:15,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:01:15,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:15,540 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:15,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-11-02 20:01:15,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-11-02 20:01:15,758 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:15,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1540052095, now seen corresponding path program 8 times [2022-11-02 20:01:15,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:15,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892878078] [2022-11-02 20:01:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:15,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:16,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:16,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892878078] [2022-11-02 20:01:16,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892878078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:16,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870206659] [2022-11-02 20:01:16,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:01:16,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:16,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:16,497 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:16,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-11-02 20:01:16,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:01:16,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:16,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 20:01:16,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:17,034 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 13 treesize of output 9 [2022-11-02 20:01:17,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:17,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:17,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:17,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:17,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:17,494 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2427 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2427) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 9223372039002259456))) is different from false [2022-11-02 20:01:17,499 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2427 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2427) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 4)) 9223372039002259456))) is different from false [2022-11-02 20:01:17,504 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2427 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2427) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 9223372039002259456))) is different from false [2022-11-02 20:01:17,509 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2427 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2427) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 12)) 9223372039002259456))) is different from false [2022-11-02 20:01:17,518 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2427 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2427) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 16)) 9223372039002259456))) is different from false [2022-11-02 20:01:17,524 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2427 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2427) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 20)) 9223372039002259456))) is different from false [2022-11-02 20:01:17,530 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2427 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2427) c_~A~0.base) (+ c_~A~0.offset 20)) 9223372039002259456))) is different from false [2022-11-02 20:01:17,541 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2427 (Array Int Int)) (v_ArrVal_2426 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2426) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2427) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 20 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2022-11-02 20:01:17,551 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:17,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:01:17,560 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:17,560 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 159 treesize of output 149 [2022-11-02 20:01:17,565 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 134 treesize of output 126 [2022-11-02 20:01:17,569 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 126 treesize of output 110 [2022-11-02 20:01:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2022-11-02 20:01:17,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870206659] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:17,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:17,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-11-02 20:01:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535351201] [2022-11-02 20:01:17,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:17,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-02 20:01:17,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-02 20:01:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1390, Unknown=8, NotChecked=648, Total=2162 [2022-11-02 20:01:17,874 INFO L87 Difference]: Start difference. First operand 572 states and 1936 transitions. Second operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:01:20,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:20,692 INFO L93 Difference]: Finished difference Result 1012 states and 2663 transitions. [2022-11-02 20:01:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:01:20,693 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 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 17 [2022-11-02 20:01:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:20,694 INFO L225 Difference]: With dead ends: 1012 [2022-11-02 20:01:20,695 INFO L226 Difference]: Without dead ends: 1010 [2022-11-02 20:01:20,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 8 SemanticMatches, 61 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=243, Invalid=2751, Unknown=8, NotChecked=904, Total=3906 [2022-11-02 20:01:20,695 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 318 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 872 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:20,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 173 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2121 Invalid, 0 Unknown, 872 Unchecked, 1.3s Time] [2022-11-02 20:01:20,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2022-11-02 20:01:20,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 555. [2022-11-02 20:01:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 540 states have (on average 3.3703703703703702) internal successors, (1820), 554 states have internal predecessors, (1820), 0 states have call successors, (0), 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 20:01:20,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1820 transitions. [2022-11-02 20:01:20,708 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1820 transitions. Word has length 17 [2022-11-02 20:01:20,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:20,708 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 1820 transitions. [2022-11-02 20:01:20,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:01:20,708 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1820 transitions. [2022-11-02 20:01:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:01:20,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:20,709 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:20,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-11-02 20:01:20,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-11-02 20:01:20,910 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:20,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:20,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1540044653, now seen corresponding path program 7 times [2022-11-02 20:01:20,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:20,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194108322] [2022-11-02 20:01:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:20,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:21,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:21,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194108322] [2022-11-02 20:01:21,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194108322] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:21,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456857789] [2022-11-02 20:01:21,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:01:21,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:21,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:21,609 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:21,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-11-02 20:01:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:21,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 20:01:21,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:22,183 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 13 treesize of output 9 [2022-11-02 20:01:22,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:22,231 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 20:01:22,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:22,485 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 20:01:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:22,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:22,634 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2481 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2481) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 4)) 4294967296)) is different from false [2022-11-02 20:01:22,639 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2481 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2481) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 4294967296)) is different from false [2022-11-02 20:01:22,646 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2481 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2481) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 12)) 4294967296)) is different from false [2022-11-02 20:01:22,651 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2481 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2481) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 16)) 4294967296)) is different from false [2022-11-02 20:01:22,656 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2481 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2481) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 20)) 4294967296)) is different from false [2022-11-02 20:01:22,661 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2481 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2481) c_~A~0.base) (+ c_~A~0.offset 20)) 4294967296)) is different from false [2022-11-02 20:01:22,670 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2481 (Array Int Int)) (v_ArrVal_2480 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2480) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2481) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 20 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) is different from false [2022-11-02 20:01:22,678 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:22,678 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 27 treesize of output 28 [2022-11-02 20:01:22,689 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:22,690 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 141 treesize of output 131 [2022-11-02 20:01:22,696 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 59 treesize of output 51 [2022-11-02 20:01:22,700 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 110 treesize of output 94 [2022-11-02 20:01:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 20 not checked. [2022-11-02 20:01:22,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456857789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:22,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:22,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-11-02 20:01:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924736804] [2022-11-02 20:01:23,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:23,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-02 20:01:23,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:23,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-02 20:01:23,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1464, Unknown=7, NotChecked=574, Total=2162 [2022-11-02 20:01:23,001 INFO L87 Difference]: Start difference. First operand 555 states and 1820 transitions. Second operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:01:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:25,775 INFO L93 Difference]: Finished difference Result 972 states and 2524 transitions. [2022-11-02 20:01:25,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:01:25,776 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 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 17 [2022-11-02 20:01:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:25,777 INFO L225 Difference]: With dead ends: 972 [2022-11-02 20:01:25,777 INFO L226 Difference]: Without dead ends: 958 [2022-11-02 20:01:25,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=244, Invalid=2857, Unknown=7, NotChecked=798, Total=3906 [2022-11-02 20:01:25,778 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 318 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 510 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:25,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 190 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2322 Invalid, 0 Unknown, 510 Unchecked, 1.4s Time] [2022-11-02 20:01:25,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-11-02 20:01:25,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 507. [2022-11-02 20:01:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 492 states have (on average 3.1890243902439024) internal successors, (1569), 506 states have internal predecessors, (1569), 0 states have call successors, (0), 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 20:01:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1569 transitions. [2022-11-02 20:01:25,787 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1569 transitions. Word has length 17 [2022-11-02 20:01:25,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:25,787 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 1569 transitions. [2022-11-02 20:01:25,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 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 20:01:25,788 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1569 transitions. [2022-11-02 20:01:25,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:01:25,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:25,788 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:25,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-11-02 20:01:25,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-11-02 20:01:25,991 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:25,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:25,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1265790123, now seen corresponding path program 7 times [2022-11-02 20:01:25,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:25,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827285196] [2022-11-02 20:01:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:25,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:26,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:26,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827285196] [2022-11-02 20:01:26,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827285196] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:26,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220797013] [2022-11-02 20:01:26,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:01:26,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:26,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:26,616 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:26,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-11-02 20:01:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:26,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 20:01:26,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:27,170 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 13 treesize of output 9 [2022-11-02 20:01:27,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:27,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:27,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:27,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:27,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:27,789 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2535 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2535) c_~A~0.base) (+ c_~A~0.offset 20)) 4294967296))) is different from false [2022-11-02 20:01:27,797 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2535 (Array Int Int)) (v_ArrVal_2534 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2534) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2535) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 20 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2022-11-02 20:01:27,806 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:27,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:01:27,815 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:27,815 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 159 treesize of output 149 [2022-11-02 20:01:27,824 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 134 treesize of output 118 [2022-11-02 20:01:27,829 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 118 treesize of output 110 [2022-11-02 20:01:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-02 20:01:28,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220797013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:28,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:28,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-11-02 20:01:28,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287510312] [2022-11-02 20:01:28,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:28,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-02 20:01:28,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:28,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-02 20:01:28,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1847, Unknown=2, NotChecked=174, Total=2162 [2022-11-02 20:01:28,134 INFO L87 Difference]: Start difference. First operand 507 states and 1569 transitions. Second operand has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 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 20:01:30,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:30,496 INFO L93 Difference]: Finished difference Result 727 states and 2056 transitions. [2022-11-02 20:01:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:01:30,497 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-02 20:01:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:30,498 INFO L225 Difference]: With dead ends: 727 [2022-11-02 20:01:30,498 INFO L226 Difference]: Without dead ends: 727 [2022-11-02 20:01:30,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=295, Invalid=3371, Unknown=2, NotChecked=238, Total=3906 [2022-11-02 20:01:30,499 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 283 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:30,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 170 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1871 Invalid, 0 Unknown, 152 Unchecked, 1.2s Time] [2022-11-02 20:01:30,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-11-02 20:01:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 553. [2022-11-02 20:01:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 538 states have (on average 3.2936802973977697) internal successors, (1772), 552 states have internal predecessors, (1772), 0 states have call successors, (0), 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 20:01:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1772 transitions. [2022-11-02 20:01:30,511 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1772 transitions. Word has length 18 [2022-11-02 20:01:30,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:30,511 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 1772 transitions. [2022-11-02 20:01:30,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 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 20:01:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1772 transitions. [2022-11-02 20:01:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:01:30,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:30,511 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:30,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-11-02 20:01:30,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:30,712 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:30,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1265790119, now seen corresponding path program 7 times [2022-11-02 20:01:30,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:30,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420335941] [2022-11-02 20:01:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:30,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:31,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:31,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420335941] [2022-11-02 20:01:31,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420335941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:31,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894909231] [2022-11-02 20:01:31,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:01:31,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:31,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:31,236 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:31,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-11-02 20:01:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:31,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 20:01:31,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:31,785 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 13 treesize of output 9 [2022-11-02 20:01:31,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:31,828 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 20:01:31,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:31,864 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 20:01:32,029 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:32,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:32,230 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2589 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2589) c_~A~0.base) (+ c_~A~0.offset 20)) 9223372039002259456)) is different from false [2022-11-02 20:01:32,237 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2589 (Array Int Int)) (v_ArrVal_2588 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_2588) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2589) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 20 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) is different from false [2022-11-02 20:01:32,244 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:32,244 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 27 treesize of output 28 [2022-11-02 20:01:32,251 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:32,251 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 71 treesize of output 67 [2022-11-02 20:01:32,254 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 54 treesize of output 46 [2022-11-02 20:01:32,260 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 24 treesize of output 20 [2022-11-02 20:01:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-02 20:01:32,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894909231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:32,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:32,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-11-02 20:01:32,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534272652] [2022-11-02 20:01:32,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:32,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-02 20:01:32,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:32,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-02 20:01:32,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1222, Unknown=2, NotChecked=142, Total=1482 [2022-11-02 20:01:32,331 INFO L87 Difference]: Start difference. First operand 553 states and 1772 transitions. Second operand has 39 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 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 20:01:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:33,389 INFO L93 Difference]: Finished difference Result 685 states and 1924 transitions. [2022-11-02 20:01:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:01:33,389 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-02 20:01:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:33,391 INFO L225 Difference]: With dead ends: 685 [2022-11-02 20:01:33,391 INFO L226 Difference]: Without dead ends: 685 [2022-11-02 20:01:33,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=219, Invalid=1857, Unknown=2, NotChecked=178, Total=2256 [2022-11-02 20:01:33,391 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 210 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:33,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 108 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1223 Invalid, 0 Unknown, 138 Unchecked, 0.8s Time] [2022-11-02 20:01:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-11-02 20:01:33,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 553. [2022-11-02 20:01:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 538 states have (on average 3.20817843866171) internal successors, (1726), 552 states have internal predecessors, (1726), 0 states have call successors, (0), 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 20:01:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 1726 transitions. [2022-11-02 20:01:33,399 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 1726 transitions. Word has length 18 [2022-11-02 20:01:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:33,400 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 1726 transitions. [2022-11-02 20:01:33,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 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 20:01:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 1726 transitions. [2022-11-02 20:01:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:01:33,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:33,401 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1] [2022-11-02 20:01:33,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-11-02 20:01:33,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-11-02 20:01:33,619 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1682773987, now seen corresponding path program 9 times [2022-11-02 20:01:33,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:33,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744852516] [2022-11-02 20:01:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:33,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:34,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:34,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744852516] [2022-11-02 20:01:34,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744852516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:34,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245217648] [2022-11-02 20:01:34,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:01:34,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:34,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:34,132 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:34,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-11-02 20:01:34,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-02 20:01:34,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:34,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:01:34,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:34,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:01:34,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:34,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:35,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:35,867 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:35,867 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 26 treesize of output 27 [2022-11-02 20:01:35,875 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:35,876 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 41 treesize of output 37 [2022-11-02 20:01:35,880 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 13 treesize of output 7 [2022-11-02 20:01:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:36,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245217648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:36,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:36,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-11-02 20:01:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48569483] [2022-11-02 20:01:36,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:36,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 20:01:36,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 20:01:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=2188, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 20:01:36,534 INFO L87 Difference]: Start difference. First operand 553 states and 1726 transitions. Second operand has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 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 20:01:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:37,340 INFO L93 Difference]: Finished difference Result 564 states and 1759 transitions. [2022-11-02 20:01:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:01:37,341 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-02 20:01:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:37,342 INFO L225 Difference]: With dead ends: 564 [2022-11-02 20:01:37,342 INFO L226 Difference]: Without dead ends: 564 [2022-11-02 20:01:37,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=455, Invalid=3835, Unknown=0, NotChecked=0, Total=4290 [2022-11-02 20:01:37,343 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:37,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 256 Invalid, 0 Unknown, 71 Unchecked, 0.2s Time] [2022-11-02 20:01:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-11-02 20:01:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 563. [2022-11-02 20:01:37,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 548 states have (on average 3.2007299270072993) internal successors, (1754), 562 states have internal predecessors, (1754), 0 states have call successors, (0), 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 20:01:37,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 1754 transitions. [2022-11-02 20:01:37,354 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 1754 transitions. Word has length 18 [2022-11-02 20:01:37,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:37,354 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 1754 transitions. [2022-11-02 20:01:37,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 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 20:01:37,354 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 1754 transitions. [2022-11-02 20:01:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:01:37,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:37,355 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1] [2022-11-02 20:01:37,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-11-02 20:01:37,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-11-02 20:01:37,562 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:37,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:37,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1682773989, now seen corresponding path program 8 times [2022-11-02 20:01:37,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:37,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028960739] [2022-11-02 20:01:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:37,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:38,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028960739] [2022-11-02 20:01:38,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028960739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:38,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860855968] [2022-11-02 20:01:38,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:01:38,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:38,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:38,387 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:38,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-11-02 20:01:38,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:01:38,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:38,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 20:01:38,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:39,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:01:39,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:39,225 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 20 treesize of output 22 [2022-11-02 20:01:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:39,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:40,312 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:40,313 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 20:01:40,321 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:40,322 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 47 treesize of output 43 [2022-11-02 20:01:40,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-02 20:01:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:41,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860855968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:41,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:41,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-11-02 20:01:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214590925] [2022-11-02 20:01:41,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:41,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 20:01:41,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:41,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 20:01:41,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=2188, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 20:01:41,029 INFO L87 Difference]: Start difference. First operand 563 states and 1754 transitions. Second operand has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 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 20:01:41,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:41,999 INFO L93 Difference]: Finished difference Result 589 states and 1806 transitions. [2022-11-02 20:01:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:01:42,000 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-02 20:01:42,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:42,001 INFO L225 Difference]: With dead ends: 589 [2022-11-02 20:01:42,001 INFO L226 Difference]: Without dead ends: 589 [2022-11-02 20:01:42,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=455, Invalid=3835, Unknown=0, NotChecked=0, Total=4290 [2022-11-02 20:01:42,002 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:42,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 74 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 85 Unchecked, 0.3s Time] [2022-11-02 20:01:42,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-02 20:01:42,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 563. [2022-11-02 20:01:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 548 states have (on average 3.198905109489051) internal successors, (1753), 562 states have internal predecessors, (1753), 0 states have call successors, (0), 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 20:01:42,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 1753 transitions. [2022-11-02 20:01:42,011 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 1753 transitions. Word has length 18 [2022-11-02 20:01:42,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:42,012 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 1753 transitions. [2022-11-02 20:01:42,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 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 20:01:42,012 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 1753 transitions. [2022-11-02 20:01:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 20:01:42,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:42,013 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1] [2022-11-02 20:01:42,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-11-02 20:01:42,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:42,227 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:42,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:42,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1682774046, now seen corresponding path program 2 times [2022-11-02 20:01:42,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:42,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047402113] [2022-11-02 20:01:42,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:42,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 20:01:42,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:42,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047402113] [2022-11-02 20:01:42,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047402113] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:42,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298601438] [2022-11-02 20:01:42,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:01:42,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:42,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:42,399 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:42,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-11-02 20:01:42,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:01:42,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:42,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:01:42,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:01:42,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:01:42,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298601438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:01:42,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:01:42,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [8] total 9 [2022-11-02 20:01:42,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636044487] [2022-11-02 20:01:42,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:01:42,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:01:42,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:42,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:01:42,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:01:42,823 INFO L87 Difference]: Start difference. First operand 563 states and 1753 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 20:01:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:42,848 INFO L93 Difference]: Finished difference Result 513 states and 1605 transitions. [2022-11-02 20:01:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:01:42,848 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 18 [2022-11-02 20:01:42,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:42,849 INFO L225 Difference]: With dead ends: 513 [2022-11-02 20:01:42,849 INFO L226 Difference]: Without dead ends: 513 [2022-11-02 20:01:42,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:01:42,850 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:42,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:01:42,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-11-02 20:01:42,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 479. [2022-11-02 20:01:42,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 471 states have (on average 3.267515923566879) internal successors, (1539), 478 states have internal predecessors, (1539), 0 states have call successors, (0), 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 20:01:42,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1539 transitions. [2022-11-02 20:01:42,859 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1539 transitions. Word has length 18 [2022-11-02 20:01:42,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:42,859 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 1539 transitions. [2022-11-02 20:01:42,859 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 20:01:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1539 transitions. [2022-11-02 20:01:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:01:42,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:42,860 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:42,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-11-02 20:01:43,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:43,063 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash -584784576, now seen corresponding path program 8 times [2022-11-02 20:01:43,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:43,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177433576] [2022-11-02 20:01:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:43,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:43,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:43,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177433576] [2022-11-02 20:01:43,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177433576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:43,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998130342] [2022-11-02 20:01:43,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:01:43,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:43,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:43,368 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:43,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-02 20:01:43,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:01:43,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:43,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:01:43,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:44,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:44,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998130342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:44,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:44,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 37 [2022-11-02 20:01:44,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423145707] [2022-11-02 20:01:44,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:44,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-02 20:01:44,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:44,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-02 20:01:44,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1117, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 20:01:44,256 INFO L87 Difference]: Start difference. First operand 479 states and 1539 transitions. Second operand has 39 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:01:44,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:44,684 INFO L93 Difference]: Finished difference Result 481 states and 1473 transitions. [2022-11-02 20:01:44,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:01:44,685 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 20:01:44,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:44,685 INFO L225 Difference]: With dead ends: 481 [2022-11-02 20:01:44,685 INFO L226 Difference]: Without dead ends: 302 [2022-11-02 20:01:44,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 7 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=540, Invalid=1622, Unknown=0, NotChecked=0, Total=2162 [2022-11-02 20:01:44,686 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 120 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:44,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 89 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:01:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-02 20:01:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2022-11-02 20:01:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 294 states have (on average 3.3095238095238093) internal successors, (973), 301 states have internal predecessors, (973), 0 states have call successors, (0), 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 20:01:44,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 973 transitions. [2022-11-02 20:01:44,691 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 973 transitions. Word has length 19 [2022-11-02 20:01:44,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:44,691 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 973 transitions. [2022-11-02 20:01:44,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:01:44,692 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 973 transitions. [2022-11-02 20:01:44,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:01:44,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:44,692 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:44,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-11-02 20:01:44,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-11-02 20:01:44,893 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash 626389134, now seen corresponding path program 8 times [2022-11-02 20:01:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:44,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366308341] [2022-11-02 20:01:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:44,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:45,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:45,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366308341] [2022-11-02 20:01:45,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366308341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:45,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593740820] [2022-11-02 20:01:45,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:01:45,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:45,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:45,574 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:45,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-11-02 20:01:45,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:01:45,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:45,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 20:01:45,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:46,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:01:46,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:46,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:46,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:46,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:46,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:46,948 WARN L833 $PredicateComparison]: unable to prove that (or (not (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0)) (forall ((v_ArrVal_2853 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2853) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296))) is different from false [2022-11-02 20:01:47,519 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:47,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:01:47,528 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:47,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 75 [2022-11-02 20:01:47,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-11-02 20:01:47,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-11-02 20:01:48,343 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:48,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593740820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:48,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:48,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-11-02 20:01:48,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931360741] [2022-11-02 20:01:48,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:48,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-02 20:01:48,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-02 20:01:48,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=2376, Unknown=2, NotChecked=100, Total=2756 [2022-11-02 20:01:48,346 INFO L87 Difference]: Start difference. First operand 302 states and 973 transitions. Second operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 20:01:49,443 WARN L833 $PredicateComparison]: unable to prove that (and (or (not (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0)) (forall ((v_ArrVal_2853 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2853) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967296))) (forall ((|v_thread1Thread1of1ForFork1_~i~0#1_397| Int)) (or (forall ((v_ArrVal_2853 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2853) c_~A~0.base) (+ c_~A~0.offset (* |v_thread1Thread1of1ForFork1_~i~0#1_397| 4))) 4294967296)) (not (< |v_thread1Thread1of1ForFork1_~i~0#1_397| c_~N~0)) (not (<= (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) |v_thread1Thread1of1ForFork1_~i~0#1_397|))))) is different from false [2022-11-02 20:01:49,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:49,491 INFO L93 Difference]: Finished difference Result 306 states and 989 transitions. [2022-11-02 20:01:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:01:49,492 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 19 [2022-11-02 20:01:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:49,492 INFO L225 Difference]: With dead ends: 306 [2022-11-02 20:01:49,492 INFO L226 Difference]: Without dead ends: 306 [2022-11-02 20:01:49,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=487, Invalid=4210, Unknown=3, NotChecked=270, Total=4970 [2022-11-02 20:01:49,493 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:49,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 41 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 72 Unchecked, 0.1s Time] [2022-11-02 20:01:49,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-11-02 20:01:49,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 303. [2022-11-02 20:01:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 295 states have (on average 3.311864406779661) internal successors, (977), 302 states have internal predecessors, (977), 0 states have call successors, (0), 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 20:01:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 977 transitions. [2022-11-02 20:01:49,500 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 977 transitions. Word has length 19 [2022-11-02 20:01:49,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:49,501 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 977 transitions. [2022-11-02 20:01:49,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 20:01:49,501 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 977 transitions. [2022-11-02 20:01:49,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:01:49,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:49,502 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:49,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-11-02 20:01:49,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:49,727 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:49,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash 626389136, now seen corresponding path program 9 times [2022-11-02 20:01:49,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:49,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63704612] [2022-11-02 20:01:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:49,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:50,613 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:50,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:50,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63704612] [2022-11-02 20:01:50,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63704612] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:50,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500350498] [2022-11-02 20:01:50,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:01:50,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:50,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:50,614 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:50,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-02 20:01:51,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-02 20:01:51,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:51,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 20:01:51,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:51,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:01:51,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:51,643 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 20 treesize of output 22 [2022-11-02 20:01:52,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:52,159 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 20 treesize of output 22 [2022-11-02 20:01:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:52,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:52,266 WARN L833 $PredicateComparison]: unable to prove that (or (not (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0)) (forall ((v_ArrVal_2911 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2911) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 9223372039002259456)))) is different from false [2022-11-02 20:01:52,858 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:52,859 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 20:01:52,872 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:52,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 163 [2022-11-02 20:01:52,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 122 [2022-11-02 20:01:52,885 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 67 treesize of output 55 [2022-11-02 20:01:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:53,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500350498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:53,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:53,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-11-02 20:01:53,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942923857] [2022-11-02 20:01:53,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:53,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-02 20:01:53,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-02 20:01:53,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=2377, Unknown=1, NotChecked=100, Total=2756 [2022-11-02 20:01:53,743 INFO L87 Difference]: Start difference. First operand 303 states and 977 transitions. Second operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 20:01:54,935 WARN L833 $PredicateComparison]: unable to prove that (and (or (not (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0)) (forall ((v_ArrVal_2911 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2911) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 9223372039002259456)))) (forall ((|v_thread1Thread1of1ForFork1_~i~0#1_411| Int)) (or (not (<= (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) |v_thread1Thread1of1ForFork1_~i~0#1_411|)) (forall ((v_ArrVal_2911 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2911) c_~A~0.base) (+ c_~A~0.offset (* |v_thread1Thread1of1ForFork1_~i~0#1_411| 4))) 9223372039002259456))) (not (< |v_thread1Thread1of1ForFork1_~i~0#1_411| c_~N~0))))) is different from false [2022-11-02 20:01:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:01:55,066 INFO L93 Difference]: Finished difference Result 329 states and 1033 transitions. [2022-11-02 20:01:55,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:01:55,067 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 19 [2022-11-02 20:01:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:01:55,067 INFO L225 Difference]: With dead ends: 329 [2022-11-02 20:01:55,067 INFO L226 Difference]: Without dead ends: 329 [2022-11-02 20:01:55,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=487, Invalid=4211, Unknown=2, NotChecked=270, Total=4970 [2022-11-02 20:01:55,068 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:01:55,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 72 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 358 Invalid, 0 Unknown, 99 Unchecked, 0.2s Time] [2022-11-02 20:01:55,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-02 20:01:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 303. [2022-11-02 20:01:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 295 states have (on average 3.3084745762711862) internal successors, (976), 302 states have internal predecessors, (976), 0 states have call successors, (0), 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 20:01:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 976 transitions. [2022-11-02 20:01:55,074 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 976 transitions. Word has length 19 [2022-11-02 20:01:55,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:01:55,074 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 976 transitions. [2022-11-02 20:01:55,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 20:01:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 976 transitions. [2022-11-02 20:01:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:01:55,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:01:55,075 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1] [2022-11-02 20:01:55,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-11-02 20:01:55,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:55,275 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:01:55,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:01:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash 626381694, now seen corresponding path program 9 times [2022-11-02 20:01:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:01:55,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282403417] [2022-11-02 20:01:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:01:55,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:01:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:01:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:56,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:01:56,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282403417] [2022-11-02 20:01:56,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282403417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:01:56,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909726341] [2022-11-02 20:01:56,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:01:56,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:01:56,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:01:56,260 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:01:56,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-11-02 20:01:57,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-02 20:01:57,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:01:57,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 20:01:57,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:01:57,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:01:57,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:57,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:58,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:01:58,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:01:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:58,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:01:58,989 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:58,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:01:58,999 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:01:58,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 75 [2022-11-02 20:01:59,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-11-02 20:01:59,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-11-02 20:01:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 10 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:01:59,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909726341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:01:59,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:01:59,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-11-02 20:01:59,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735991546] [2022-11-02 20:01:59,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:01:59,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-02 20:01:59,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:01:59,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-02 20:01:59,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2482, Unknown=3, NotChecked=0, Total=2756 [2022-11-02 20:01:59,975 INFO L87 Difference]: Start difference. First operand 303 states and 976 transitions. Second operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 20:02:01,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:02:01,396 INFO L93 Difference]: Finished difference Result 351 states and 1186 transitions. [2022-11-02 20:02:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:02:01,397 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 19 [2022-11-02 20:02:01,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:02:01,398 INFO L225 Difference]: With dead ends: 351 [2022-11-02 20:02:01,398 INFO L226 Difference]: Without dead ends: 351 [2022-11-02 20:02:01,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=515, Invalid=4594, Unknown=3, NotChecked=0, Total=5112 [2022-11-02 20:02:01,398 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:02:01,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 100 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 475 Invalid, 0 Unknown, 118 Unchecked, 0.3s Time] [2022-11-02 20:02:01,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-02 20:02:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 349. [2022-11-02 20:02:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 341 states have (on average 3.4574780058651027) internal successors, (1179), 348 states have internal predecessors, (1179), 0 states have call successors, (0), 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 20:02:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 1179 transitions. [2022-11-02 20:02:01,405 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 1179 transitions. Word has length 19 [2022-11-02 20:02:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:02:01,405 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 1179 transitions. [2022-11-02 20:02:01,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 20:02:01,406 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 1179 transitions. [2022-11-02 20:02:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:02:01,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:02:01,406 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1] [2022-11-02 20:02:01,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-11-02 20:02:01,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:02:01,607 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:02:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:02:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash 626381696, now seen corresponding path program 10 times [2022-11-02 20:02:01,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:02:01,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330227684] [2022-11-02 20:02:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:02:01,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:02:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:02:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:02:02,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:02:02,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330227684] [2022-11-02 20:02:02,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330227684] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:02:02,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625285211] [2022-11-02 20:02:02,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:02:02,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:02:02,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:02:02,519 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:02:02,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-11-02 20:02:03,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:02:03,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:02:03,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:02:03,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:02:03,353 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 13 treesize of output 9 [2022-11-02 20:02:03,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:02:03,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:02:03,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:02:03,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:02:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:02:03,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:02:04,070 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3027 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3027) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 4)) 9223372039002259456))) is different from false [2022-11-02 20:02:04,076 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3027 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3027) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 9223372039002259456))) is different from false [2022-11-02 20:02:04,082 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3027 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3027) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 12)) 9223372039002259456))) is different from false [2022-11-02 20:02:04,088 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3027 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3027) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 16)) 9223372039002259456))) is different from false [2022-11-02 20:02:04,097 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3027 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3027) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 20)) 9223372039002259456))) is different from false [2022-11-02 20:02:04,103 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3027 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3027) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 24)) 9223372039002259456))) is different from false [2022-11-02 20:02:04,108 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3027 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3027) c_~A~0.base) (+ c_~A~0.offset 24)) 9223372039002259456))) is different from false [2022-11-02 20:02:04,118 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3026 (Array Int Int)) (v_ArrVal_3027 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_3026) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3027) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 24 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2022-11-02 20:02:04,128 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:02:04,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-02 20:02:04,137 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:02:04,137 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 159 treesize of output 149 [2022-11-02 20:02:04,143 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 134 treesize of output 118 [2022-11-02 20:02:04,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2022-11-02 20:02:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 27 not checked. [2022-11-02 20:02:04,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625285211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:02:04,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:02:04,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-11-02 20:02:04,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857961593] [2022-11-02 20:02:04,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:02:04,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-02 20:02:04,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:02:04,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-02 20:02:04,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1872, Unknown=8, NotChecked=744, Total=2756 [2022-11-02 20:02:04,623 INFO L87 Difference]: Start difference. First operand 349 states and 1179 transitions. Second operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 20:02:08,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:02:08,737 INFO L93 Difference]: Finished difference Result 694 states and 1834 transitions. [2022-11-02 20:02:08,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:02:08,738 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 19 [2022-11-02 20:02:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:02:08,740 INFO L225 Difference]: With dead ends: 694 [2022-11-02 20:02:08,740 INFO L226 Difference]: Without dead ends: 694 [2022-11-02 20:02:08,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=263, Invalid=3543, Unknown=8, NotChecked=1016, Total=4830 [2022-11-02 20:02:08,741 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 303 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 2939 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 3897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 904 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:02:08,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 257 Invalid, 3897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2939 Invalid, 0 Unknown, 904 Unchecked, 2.1s Time] [2022-11-02 20:02:08,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-11-02 20:02:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 375. [2022-11-02 20:02:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 367 states have (on average 3.4877384196185286) internal successors, (1280), 374 states have internal predecessors, (1280), 0 states have call successors, (0), 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 20:02:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1280 transitions. [2022-11-02 20:02:08,750 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1280 transitions. Word has length 19 [2022-11-02 20:02:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:02:08,750 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 1280 transitions. [2022-11-02 20:02:08,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 20:02:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1280 transitions. [2022-11-02 20:02:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 20:02:08,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:02:08,751 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1] [2022-11-02 20:02:08,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-11-02 20:02:08,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:02:08,951 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:02:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:02:08,952 INFO L85 PathProgramCache]: Analyzing trace with hash 626151054, now seen corresponding path program 10 times [2022-11-02 20:02:08,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:02:08,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957759190] [2022-11-02 20:02:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:02:08,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:02:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:02:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:02:09,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:02:09,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957759190] [2022-11-02 20:02:09,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957759190] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:02:09,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568433686] [2022-11-02 20:02:09,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:02:09,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:02:09,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:02:09,842 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:02:09,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-11-02 20:02:10,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:02:10,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:02:10,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:02:10,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:02:10,688 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 13 treesize of output 9 [2022-11-02 20:02:10,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:02:10,753 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 20:02:11,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:02:11,107 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 20:02:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:02:11,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:02:11,419 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3085 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3085) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 8)) 4294967296)) is different from false [2022-11-02 20:02:11,425 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3085 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3085) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 12)) 4294967296)) is different from false [2022-11-02 20:02:11,431 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3085 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3085) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 16)) 4294967296)) is different from false [2022-11-02 20:02:11,438 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3085 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3085) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 20)) 4294967296)) is different from false [2022-11-02 20:02:11,444 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3085 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3085) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset 24)) 4294967296)) is different from false [2022-11-02 20:02:11,449 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3085 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3085) c_~A~0.base) (+ c_~A~0.offset 24)) 4294967296)) is different from false [2022-11-02 20:02:11,459 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3085 (Array Int Int)) (v_ArrVal_3084 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_3084) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3085) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 24 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) is different from false [2022-11-02 20:02:11,469 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:02:11,469 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 27 treesize of output 28 [2022-11-02 20:02:11,479 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:02:11,479 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 141 treesize of output 131 [2022-11-02 20:02:11,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2022-11-02 20:02:11,489 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 110 treesize of output 94 [2022-11-02 20:02:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 25 not checked. [2022-11-02 20:02:11,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568433686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:02:11,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:02:11,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-11-02 20:02:11,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871369569] [2022-11-02 20:02:11,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:02:11,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-02 20:02:11,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:02:11,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-02 20:02:11,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1958, Unknown=7, NotChecked=658, Total=2756 [2022-11-02 20:02:11,952 INFO L87 Difference]: Start difference. First operand 375 states and 1280 transitions. Second operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 20:02:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:02:16,035 INFO L93 Difference]: Finished difference Result 669 states and 1760 transitions. [2022-11-02 20:02:16,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:02:16,036 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 19 [2022-11-02 20:02:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:02:16,037 INFO L225 Difference]: With dead ends: 669 [2022-11-02 20:02:16,038 INFO L226 Difference]: Without dead ends: 669 [2022-11-02 20:02:16,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=265, Invalid=3662, Unknown=7, NotChecked=896, Total=4830 [2022-11-02 20:02:16,038 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 303 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 3131 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 3832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 647 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:02:16,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 275 Invalid, 3832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3131 Invalid, 0 Unknown, 647 Unchecked, 2.2s Time] [2022-11-02 20:02:16,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-11-02 20:02:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 331. [2022-11-02 20:02:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 323 states have (on average 3.34984520123839) internal successors, (1082), 330 states have internal predecessors, (1082), 0 states have call successors, (0), 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 20:02:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1082 transitions. [2022-11-02 20:02:16,047 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1082 transitions. Word has length 19 [2022-11-02 20:02:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:02:16,047 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 1082 transitions. [2022-11-02 20:02:16,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 0 states have call successors, (0), 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 20:02:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1082 transitions. [2022-11-02 20:02:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:02:16,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:02:16,048 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1] [2022-11-02 20:02:16,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-11-02 20:02:16,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:02:16,251 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:02:16,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:02:16,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2056769987, now seen corresponding path program 11 times [2022-11-02 20:02:16,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:02:16,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164184363] [2022-11-02 20:02:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:02:16,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:02:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:02:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 21 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:02:16,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:02:16,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164184363] [2022-11-02 20:02:16,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164184363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:02:16,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981487328] [2022-11-02 20:02:16,660 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:02:16,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:02:16,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:02:16,662 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:02:16,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-11-02 20:02:17,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-02 20:02:17,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:02:17,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:02:17,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:02:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:02:17,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:02:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:02:17,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981487328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:02:17,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:02:17,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 42 [2022-11-02 20:02:17,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709184341] [2022-11-02 20:02:17,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:02:17,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-02 20:02:17,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:02:17,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-02 20:02:17,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892 [2022-11-02 20:02:17,982 INFO L87 Difference]: Start difference. First operand 331 states and 1082 transitions. Second operand has 44 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:02:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:02:18,972 INFO L93 Difference]: Finished difference Result 874 states and 2420 transitions. [2022-11-02 20:02:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:02:18,972 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-02 20:02:18,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:02:18,974 INFO L225 Difference]: With dead ends: 874 [2022-11-02 20:02:18,974 INFO L226 Difference]: Without dead ends: 856 [2022-11-02 20:02:18,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 5 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1347 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2022-11-02 20:02:18,975 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 199 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:02:18,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 130 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:02:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-11-02 20:02:18,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 516. [2022-11-02 20:02:18,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 508 states have (on average 3.312992125984252) internal successors, (1683), 515 states have internal predecessors, (1683), 0 states have call successors, (0), 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 20:02:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1683 transitions. [2022-11-02 20:02:18,988 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1683 transitions. Word has length 20 [2022-11-02 20:02:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:02:18,989 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 1683 transitions. [2022-11-02 20:02:18,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:02:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1683 transitions. [2022-11-02 20:02:18,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:02:18,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:02:18,990 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:02:19,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-11-02 20:02:19,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:02:19,208 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:02:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:02:19,209 INFO L85 PathProgramCache]: Analyzing trace with hash -868236242, now seen corresponding path program 9 times [2022-11-02 20:02:19,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:02:19,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695219984] [2022-11-02 20:02:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:02:19,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:02:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:02:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:02:20,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:02:20,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695219984] [2022-11-02 20:02:20,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695219984] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:02:20,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638158326] [2022-11-02 20:02:20,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:02:20,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:02:20,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:02:20,108 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:02:20,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-11-02 20:02:21,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-02 20:02:21,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:02:21,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 20:02:21,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:02:21,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:02:21,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:02:21,430 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 20 treesize of output 22 [2022-11-02 20:02:21,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:02:21,507 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 20 treesize of output 22 [2022-11-02 20:02:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:02:22,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:02:22,840 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:02:22,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 20:02:22,852 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:02:22,852 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 89 treesize of output 85 [2022-11-02 20:02:22,858 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 68 treesize of output 56 [2022-11-02 20:02:22,865 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 30 treesize of output 24 [2022-11-02 20:02:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:02:23,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638158326] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:02:23,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:02:23,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-11-02 20:02:23,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386591046] [2022-11-02 20:02:23,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:02:23,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-02 20:02:23,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:02:23,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-02 20:02:23,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=2482, Unknown=2, NotChecked=0, Total=2756 [2022-11-02 20:02:23,829 INFO L87 Difference]: Start difference. First operand 516 states and 1683 transitions. Second operand has 53 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:02:25,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:02:25,013 INFO L93 Difference]: Finished difference Result 516 states and 1685 transitions. [2022-11-02 20:02:25,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:02:25,014 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 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 20 [2022-11-02 20:02:25,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:02:25,015 INFO L225 Difference]: With dead ends: 516 [2022-11-02 20:02:25,015 INFO L226 Difference]: Without dead ends: 516 [2022-11-02 20:02:25,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=474, Invalid=4354, Unknown=2, NotChecked=0, Total=4830 [2022-11-02 20:02:25,016 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 46 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:02:25,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 223 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2022-11-02 20:02:25,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-11-02 20:02:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 514. [2022-11-02 20:02:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 506 states have (on average 3.3122529644268774) internal successors, (1676), 513 states have internal predecessors, (1676), 0 states have call successors, (0), 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 20:02:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1676 transitions. [2022-11-02 20:02:25,023 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1676 transitions. Word has length 20 [2022-11-02 20:02:25,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:02:25,023 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 1676 transitions. [2022-11-02 20:02:25,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 52 states have internal predecessors, (60), 0 states have call successors, (0), 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 20:02:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1676 transitions. [2022-11-02 20:02:25,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:02:25,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:02:25,024 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:02:25,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-11-02 20:02:25,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:02:25,225 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-11-02 20:02:25,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:02:25,225 INFO L85 PathProgramCache]: Analyzing trace with hash -868236238, now seen corresponding path program 8 times [2022-11-02 20:02:25,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:02:25,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192702441] [2022-11-02 20:02:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:02:25,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:02:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:02:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:02:26,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:02:26,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192702441] [2022-11-02 20:02:26,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192702441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:02:26,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252917272] [2022-11-02 20:02:26,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:02:26,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:02:26,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:02:26,053 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:02:26,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1985675-0371-416c-8218-7efe5b2a7073/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-11-02 20:02:26,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:02:26,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:02:26,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 20:02:26,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:02:26,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:02:26,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:02:26,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:02:27,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:02:27,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20