./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-subst.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_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/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_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/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_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/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 b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:25:25,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:25:25,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:25:25,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:25:25,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:25:25,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:25:25,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:25:25,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:25:25,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:25:25,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:25:25,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:25:25,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:25:25,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:25:25,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:25:25,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:25:25,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:25:25,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:25:25,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:25:25,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:25:25,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:25:25,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:25:25,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:25:25,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:25:25,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:25:25,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:25:25,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:25:25,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:25:25,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:25:25,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:25:25,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:25:25,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:25:25,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:25:25,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:25:25,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:25:25,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:25:25,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:25:25,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:25:25,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:25:25,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:25:25,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:25:25,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:25:25,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:25:25,559 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:25:25,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:25:25,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:25:25,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:25:25,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:25:25,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:25:25,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:25:25,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:25:25,562 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:25:25,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:25:25,562 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:25:25,563 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:25:25,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:25:25,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:25:25,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:25:25,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:25:25,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:25:25,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:25:25,564 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:25:25,564 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:25:25,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:25:25,565 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:25:25,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:25:25,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:25:25,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:25:25,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:25:25,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:25:25,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:25:25,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:25:25,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:25:25,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:25:25,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:25:25,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:25:25,571 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_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 [2022-11-02 20:25:25,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:25:26,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:25:26,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:25:26,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:25:26,015 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:25:26,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-02 20:25:26,112 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/data/123038996/2ecdf7f850b740e5af87a7429a80cc3b/FLAG2289ab3c5 [2022-11-02 20:25:26,671 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:25:26,672 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-02 20:25:26,681 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/data/123038996/2ecdf7f850b740e5af87a7429a80cc3b/FLAG2289ab3c5 [2022-11-02 20:25:27,025 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/data/123038996/2ecdf7f850b740e5af87a7429a80cc3b [2022-11-02 20:25:27,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:25:27,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:25:27,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:25:27,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:25:27,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:25:27,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66cabd94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27, skipping insertion in model container [2022-11-02 20:25:27,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:25:27,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:25:27,354 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_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-02 20:25:27,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:25:27,373 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:25:27,407 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_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-02 20:25:27,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:25:27,433 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:25:27,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27 WrapperNode [2022-11-02 20:25:27,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:25:27,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:25:27,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:25:27,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:25:27,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,506 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 341 [2022-11-02 20:25:27,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:25:27,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:25:27,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:25:27,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:25:27,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:25:27,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:25:27,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:25:27,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:25:27,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (1/1) ... [2022-11-02 20:25:27,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:25:27,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:25:27,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:25:27,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:25:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:25:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:25:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:25:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:25:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:25:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:25:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:25:27,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:25:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:25:27,684 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:25:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:25:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:25:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:25:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:25:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:25:27,687 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:25:27,844 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:25:27,847 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:25:28,680 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:25:28,698 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:25:28,698 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-02 20:25:28,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:25:28 BoogieIcfgContainer [2022-11-02 20:25:28,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:25:28,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:25:28,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:25:28,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:25:28,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:25:27" (1/3) ... [2022-11-02 20:25:28,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71181db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:25:28, skipping insertion in model container [2022-11-02 20:25:28,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:27" (2/3) ... [2022-11-02 20:25:28,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71181db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:25:28, skipping insertion in model container [2022-11-02 20:25:28,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:25:28" (3/3) ... [2022-11-02 20:25:28,714 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2022-11-02 20:25:28,726 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:25:28,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:25:28,740 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-02 20:25:28,740 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:25:29,018 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:25:29,104 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:25:29,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 440 places, 468 transitions, 960 flow [2022-11-02 20:25:29,138 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 440 places, 468 transitions, 960 flow [2022-11-02 20:25:29,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 440 places, 468 transitions, 960 flow [2022-11-02 20:25:29,504 INFO L130 PetriNetUnfolder]: 38/465 cut-off events. [2022-11-02 20:25:29,505 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:25:29,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 465 events. 38/465 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1015 event pairs, 0 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 346. Up to 2 conditions per place. [2022-11-02 20:25:29,548 INFO L118 LiptonReduction]: Number of co-enabled transitions 48384 [2022-11-02 20:26:06,573 INFO L133 LiptonReduction]: Checked pairs total: 49764 [2022-11-02 20:26:06,573 INFO L135 LiptonReduction]: Total number of compositions: 607 [2022-11-02 20:26:06,585 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 63 transitions, 150 flow [2022-11-02 20:26:06,848 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3771 states, 3037 states have (on average 4.225551531116233) internal successors, (12833), 3770 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:06,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:26:06,889 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;@3ae47294, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:26:06,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2022-11-02 20:26:06,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 3771 states, 3037 states have (on average 4.225551531116233) internal successors, (12833), 3770 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:06,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-02 20:26:06,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:06,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-02 20:26:06,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:06,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:06,928 INFO L85 PathProgramCache]: Analyzing trace with hash 63566, now seen corresponding path program 1 times [2022-11-02 20:26:06,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:06,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965532984] [2022-11-02 20:26:06,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:06,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:07,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965532984] [2022-11-02 20:26:07,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965532984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:07,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:07,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:26:07,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548833922] [2022-11-02 20:26:07,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:07,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:26:07,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:07,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:26:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:26:07,427 INFO L87 Difference]: Start difference. First operand has 3771 states, 3037 states have (on average 4.225551531116233) internal successors, (12833), 3770 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:07,855 INFO L93 Difference]: Finished difference Result 3995 states and 13491 transitions. [2022-11-02 20:26:07,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:26:07,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-02 20:26:07,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:07,972 INFO L225 Difference]: With dead ends: 3995 [2022-11-02 20:26:07,973 INFO L226 Difference]: Without dead ends: 3995 [2022-11-02 20:26:07,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:26:07,978 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:07,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:26:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-11-02 20:26:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 2004. [2022-11-02 20:26:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1705 states have (on average 3.961876832844575) internal successors, (6755), 2003 states have internal predecessors, (6755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 6755 transitions. [2022-11-02 20:26:08,202 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 6755 transitions. Word has length 2 [2022-11-02 20:26:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:08,202 INFO L495 AbstractCegarLoop]: Abstraction has 2004 states and 6755 transitions. [2022-11-02 20:26:08,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 6755 transitions. [2022-11-02 20:26:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:26:08,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:08,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:26:08,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:26:08,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:08,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1975708, now seen corresponding path program 1 times [2022-11-02 20:26:08,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:08,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921018146] [2022-11-02 20:26:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:08,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:08,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:08,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921018146] [2022-11-02 20:26:08,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921018146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:08,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:08,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:26:08,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931093431] [2022-11-02 20:26:08,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:08,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:26:08,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:26:08,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:26:08,306 INFO L87 Difference]: Start difference. First operand 2004 states and 6755 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:08,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:08,477 INFO L93 Difference]: Finished difference Result 2001 states and 6752 transitions. [2022-11-02 20:26:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:26:08,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 20:26:08,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:08,505 INFO L225 Difference]: With dead ends: 2001 [2022-11-02 20:26:08,505 INFO L226 Difference]: Without dead ends: 2001 [2022-11-02 20:26:08,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:26:08,510 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:08,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:26:08,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2022-11-02 20:26:08,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 2001. [2022-11-02 20:26:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1705 states have (on average 3.960117302052786) internal successors, (6752), 2000 states have internal predecessors, (6752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 6752 transitions. [2022-11-02 20:26:08,626 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 6752 transitions. Word has length 3 [2022-11-02 20:26:08,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:08,691 INFO L495 AbstractCegarLoop]: Abstraction has 2001 states and 6752 transitions. [2022-11-02 20:26:08,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:08,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 6752 transitions. [2022-11-02 20:26:08,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:26:08,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:08,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:26:08,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:26:08,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:08,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:08,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1975709, now seen corresponding path program 1 times [2022-11-02 20:26:08,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:08,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362573506] [2022-11-02 20:26:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:08,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:08,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:08,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362573506] [2022-11-02 20:26:08,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362573506] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:26:08,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247074962] [2022-11-02 20:26:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:08,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:08,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:08,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:26:08,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:26:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:09,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:26:09,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:09,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:09,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247074962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:09,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:26:09,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-02 20:26:09,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319298872] [2022-11-02 20:26:09,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:09,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:26:09,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:26:09,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:26:09,120 INFO L87 Difference]: Start difference. First operand 2001 states and 6752 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:09,939 INFO L93 Difference]: Finished difference Result 9974 states and 33714 transitions. [2022-11-02 20:26:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:26:09,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 20:26:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:10,029 INFO L225 Difference]: With dead ends: 9974 [2022-11-02 20:26:10,029 INFO L226 Difference]: Without dead ends: 9974 [2022-11-02 20:26:10,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:26:10,031 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 273 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:10,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 0 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:26:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9974 states. [2022-11-02 20:26:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9974 to 2010. [2022-11-02 20:26:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1714 states have (on average 3.9498249708284714) internal successors, (6770), 2009 states have internal predecessors, (6770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:10,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 6770 transitions. [2022-11-02 20:26:10,293 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 6770 transitions. Word has length 3 [2022-11-02 20:26:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:10,294 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 6770 transitions. [2022-11-02 20:26:10,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:10,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 6770 transitions. [2022-11-02 20:26:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:26:10,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:10,296 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-02 20:26:10,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:10,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:10,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1266099249, now seen corresponding path program 2 times [2022-11-02 20:26:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:10,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515395038] [2022-11-02 20:26:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:10,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:10,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:10,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515395038] [2022-11-02 20:26:10,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515395038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:26:10,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064433757] [2022-11-02 20:26:10,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:26:10,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:10,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:10,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:26:10,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:26:10,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:26:10,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:26:10,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:26:10,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:26:10,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:26:10,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064433757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:10,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:26:10,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-02 20:26:10,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937332514] [2022-11-02 20:26:10,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:10,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:26:10,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:10,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:26:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:10,967 INFO L87 Difference]: Start difference. First operand 2010 states and 6770 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:11,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:11,103 INFO L93 Difference]: Finished difference Result 2007 states and 6767 transitions. [2022-11-02 20:26:11,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:26:11,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 20:26:11,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:11,117 INFO L225 Difference]: With dead ends: 2007 [2022-11-02 20:26:11,119 INFO L226 Difference]: Without dead ends: 2007 [2022-11-02 20:26:11,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:11,121 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:11,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:26:11,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2022-11-02 20:26:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1995. [2022-11-02 20:26:11,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1702 states have (on average 3.961809635722679) internal successors, (6743), 1994 states have internal predecessors, (6743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 6743 transitions. [2022-11-02 20:26:11,260 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 6743 transitions. Word has length 6 [2022-11-02 20:26:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:11,261 INFO L495 AbstractCegarLoop]: Abstraction has 1995 states and 6743 transitions. [2022-11-02 20:26:11,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 6743 transitions. [2022-11-02 20:26:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:26:11,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:11,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:11,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:11,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:11,481 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:11,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:11,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1463162735, now seen corresponding path program 1 times [2022-11-02 20:26:11,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:11,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329047167] [2022-11-02 20:26:11,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:11,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:11,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:11,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329047167] [2022-11-02 20:26:11,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329047167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:11,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:11,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:26:11,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340244217] [2022-11-02 20:26:11,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:11,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:26:11,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:11,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:26:11,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:26:11,672 INFO L87 Difference]: Start difference. First operand 1995 states and 6743 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:11,836 INFO L93 Difference]: Finished difference Result 1998 states and 6746 transitions. [2022-11-02 20:26:11,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:26:11,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:26:11,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:11,852 INFO L225 Difference]: With dead ends: 1998 [2022-11-02 20:26:11,852 INFO L226 Difference]: Without dead ends: 1998 [2022-11-02 20:26:11,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:26:11,853 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:11,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:26:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2022-11-02 20:26:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1998. [2022-11-02 20:26:11,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1998 states, 1705 states have (on average 3.956598240469208) internal successors, (6746), 1997 states have internal predecessors, (6746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 6746 transitions. [2022-11-02 20:26:11,985 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 6746 transitions. Word has length 8 [2022-11-02 20:26:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:11,985 INFO L495 AbstractCegarLoop]: Abstraction has 1998 states and 6746 transitions. [2022-11-02 20:26:11,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:11,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 6746 transitions. [2022-11-02 20:26:11,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:26:11,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:11,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:11,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:26:11,987 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:11,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:11,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1578535851, now seen corresponding path program 1 times [2022-11-02 20:26:11,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:11,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036950222] [2022-11-02 20:26:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:11,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:26:12,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:12,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036950222] [2022-11-02 20:26:12,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036950222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:26:12,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318298294] [2022-11-02 20:26:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:12,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:12,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:12,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:26:12,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:26:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:12,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:26:12,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:26:12,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:26:12,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318298294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:12,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:26:12,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-02 20:26:12,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497575776] [2022-11-02 20:26:12,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:12,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:26:12,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:12,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:26:12,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:12,406 INFO L87 Difference]: Start difference. First operand 1998 states and 6746 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:12,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:12,616 INFO L93 Difference]: Finished difference Result 2007 states and 6755 transitions. [2022-11-02 20:26:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:26:12,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:26:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:12,629 INFO L225 Difference]: With dead ends: 2007 [2022-11-02 20:26:12,629 INFO L226 Difference]: Without dead ends: 2007 [2022-11-02 20:26:12,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:12,631 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:12,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:26:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2022-11-02 20:26:12,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2007. [2022-11-02 20:26:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1714 states have (on average 3.941073512252042) internal successors, (6755), 2006 states have internal predecessors, (6755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:12,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 6755 transitions. [2022-11-02 20:26:12,746 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 6755 transitions. Word has length 11 [2022-11-02 20:26:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:12,747 INFO L495 AbstractCegarLoop]: Abstraction has 2007 states and 6755 transitions. [2022-11-02 20:26:12,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 6755 transitions. [2022-11-02 20:26:12,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 20:26:12,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:12,749 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:12,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:12,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:26:12,962 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:12,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:12,963 INFO L85 PathProgramCache]: Analyzing trace with hash 618527505, now seen corresponding path program 2 times [2022-11-02 20:26:12,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:12,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769597804] [2022-11-02 20:26:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:12,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:26:13,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:13,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769597804] [2022-11-02 20:26:13,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769597804] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:26:13,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953561184] [2022-11-02 20:26:13,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:26:13,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:13,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:13,221 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:26:13,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:26:13,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:26:13,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:26:13,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:26:13,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:26:13,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:26:13,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953561184] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:13,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:26:13,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-02 20:26:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850660789] [2022-11-02 20:26:13,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:13,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:26:13,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:13,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:26:13,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:26:13,750 INFO L87 Difference]: Start difference. First operand 2007 states and 6755 transitions. Second operand has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 16 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 20:26:14,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:14,107 INFO L93 Difference]: Finished difference Result 2010 states and 6758 transitions. [2022-11-02 20:26:14,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:26:14,107 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 16 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 20 [2022-11-02 20:26:14,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:14,120 INFO L225 Difference]: With dead ends: 2010 [2022-11-02 20:26:14,120 INFO L226 Difference]: Without dead ends: 2010 [2022-11-02 20:26:14,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:26:14,122 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:14,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:26:14,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-11-02 20:26:14,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2010. [2022-11-02 20:26:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1717 states have (on average 3.935934769947583) internal successors, (6758), 2009 states have internal predecessors, (6758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:14,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 6758 transitions. [2022-11-02 20:26:14,199 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 6758 transitions. Word has length 20 [2022-11-02 20:26:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:14,199 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 6758 transitions. [2022-11-02 20:26:14,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 16 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 20:26:14,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 6758 transitions. [2022-11-02 20:26:14,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:26:14,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:14,201 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:14,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:14,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:14,427 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:14,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:14,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2034692907, now seen corresponding path program 3 times [2022-11-02 20:26:14,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:14,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194878268] [2022-11-02 20:26:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:14,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:26:18,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:18,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194878268] [2022-11-02 20:26:18,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194878268] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:26:18,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949713828] [2022-11-02 20:26:18,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:26:18,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:18,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:18,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:26:18,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:26:19,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-02 20:26:19,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:26:19,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-02 20:26:19,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:19,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:19,440 INFO L356 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2022-11-02 20:26:19,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2022-11-02 20:26:19,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:26:19,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:19,619 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 25 treesize of output 24 [2022-11-02 20:26:19,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:19,698 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 25 treesize of output 24 [2022-11-02 20:26:19,796 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-02 20:26:19,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 30 [2022-11-02 20:26:19,927 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-02 20:26:19,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 34 [2022-11-02 20:26:20,063 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:26:20,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:26:20,137 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 20:26:20,172 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 20:26:20,203 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 20:26:20,231 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 20:26:20,266 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 20:26:20,342 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:26:20,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:26:20,414 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 20:26:20,441 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 20:26:20,461 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 20:26:20,483 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 20:26:20,504 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 20:26:20,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:20,571 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 20:26:20,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-02 20:26:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:26:20,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:20,810 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_404 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_404) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2022-11-02 20:26:20,819 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_404 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_403) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_404) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2022-11-02 20:26:22,076 INFO L356 Elim1Store]: treesize reduction 304, result has 28.5 percent of original size [2022-11-02 20:26:22,077 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 5 case distinctions, treesize of input 58 treesize of output 139 [2022-11-02 20:26:22,205 INFO L356 Elim1Store]: treesize reduction 36, result has 68.1 percent of original size [2022-11-02 20:26:22,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 236 treesize of output 276 [2022-11-02 20:26:22,238 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 124 treesize of output 116 [2022-11-02 20:26:22,265 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 116 treesize of output 112 [2022-11-02 20:26:22,293 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 54 [2022-11-02 20:26:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 19 refuted. 1 times theorem prover too weak. 20 trivial. 5 not checked. [2022-11-02 20:26:22,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949713828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:22,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:26:22,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 40 [2022-11-02 20:26:22,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909962126] [2022-11-02 20:26:22,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:22,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 20:26:22,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:22,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 20:26:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1364, Unknown=20, NotChecked=154, Total=1722 [2022-11-02 20:26:22,849 INFO L87 Difference]: Start difference. First operand 2010 states and 6758 transitions. Second operand has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 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 20:26:24,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:24,488 INFO L93 Difference]: Finished difference Result 2740 states and 9258 transitions. [2022-11-02 20:26:24,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:26:24,489 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 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 23 [2022-11-02 20:26:24,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:24,506 INFO L225 Difference]: With dead ends: 2740 [2022-11-02 20:26:24,506 INFO L226 Difference]: Without dead ends: 2740 [2022-11-02 20:26:24,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 663 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=327, Invalid=1917, Unknown=20, NotChecked=186, Total=2450 [2022-11-02 20:26:24,509 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 188 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 881 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:24,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 0 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 745 Invalid, 0 Unknown, 881 Unchecked, 0.9s Time] [2022-11-02 20:26:24,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2022-11-02 20:26:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2193. [2022-11-02 20:26:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1900 states have (on average 4.17421052631579) internal successors, (7931), 2192 states have internal predecessors, (7931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 7931 transitions. [2022-11-02 20:26:24,603 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 7931 transitions. Word has length 23 [2022-11-02 20:26:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:24,604 INFO L495 AbstractCegarLoop]: Abstraction has 2193 states and 7931 transitions. [2022-11-02 20:26:24,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 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 20:26:24,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 7931 transitions. [2022-11-02 20:26:24,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:26:24,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:24,606 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:24,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:24,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:24,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2034692909, now seen corresponding path program 1 times [2022-11-02 20:26:24,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:24,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261978539] [2022-11-02 20:26:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:24,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:26,340 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:26:26,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:26,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261978539] [2022-11-02 20:26:26,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261978539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:26:26,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480951259] [2022-11-02 20:26:26,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:26,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:26,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:26,343 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:26:26,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:26:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:26,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 20:26:26,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:26,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:26:26,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:26:26,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:26,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-02 20:26:26,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:26,777 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 25 treesize of output 24 [2022-11-02 20:26:26,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:26,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-02 20:26:26,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:26,904 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 25 treesize of output 24 [2022-11-02 20:26:26,967 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:26:26,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:26:27,010 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 20:26:27,035 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 20:26:27,046 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 20:26:27,071 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 20:26:27,087 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 20:26:27,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:27,129 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 20:26:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:26:27,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:27,256 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_521 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_521) c_~o_2~0.base) c_~o_2~0.offset) 4294967296))) is different from false [2022-11-02 20:26:27,264 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_520 (Array Int Int)) (v_ArrVal_521 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_520) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_521) c_~o_2~0.base) c_~o_2~0.offset) 4294967296))) is different from false [2022-11-02 20:26:27,843 INFO L356 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-02 20:26:27,844 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 5 case distinctions, treesize of input 55 treesize of output 76 [2022-11-02 20:26:27,865 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:26:27,866 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 20:26:27,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2022-11-02 20:26:27,891 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 114 treesize of output 110 [2022-11-02 20:26:28,068 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 10 treesize of output 8 [2022-11-02 20:26:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 12 refuted. 3 times theorem prover too weak. 25 trivial. 5 not checked. [2022-11-02 20:26:28,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480951259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:28,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:26:28,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-02 20:26:28,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056464403] [2022-11-02 20:26:28,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:28,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:26:28,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:28,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:26:28,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=704, Unknown=15, NotChecked=114, Total=992 [2022-11-02 20:26:28,122 INFO L87 Difference]: Start difference. First operand 2193 states and 7931 transitions. Second operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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 20:26:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:29,220 INFO L93 Difference]: Finished difference Result 3101 states and 10138 transitions. [2022-11-02 20:26:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:26:29,221 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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 23 [2022-11-02 20:26:29,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:29,241 INFO L225 Difference]: With dead ends: 3101 [2022-11-02 20:26:29,241 INFO L226 Difference]: Without dead ends: 3101 [2022-11-02 20:26:29,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=282, Invalid=1193, Unknown=15, NotChecked=150, Total=1640 [2022-11-02 20:26:29,244 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 143 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 558 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:29,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 0 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 577 Invalid, 0 Unknown, 558 Unchecked, 0.7s Time] [2022-11-02 20:26:29,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2022-11-02 20:26:29,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2193. [2022-11-02 20:26:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1900 states have (on average 4.173684210526316) internal successors, (7930), 2192 states have internal predecessors, (7930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 7930 transitions. [2022-11-02 20:26:29,346 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 7930 transitions. Word has length 23 [2022-11-02 20:26:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:29,347 INFO L495 AbstractCegarLoop]: Abstraction has 2193 states and 7930 transitions. [2022-11-02 20:26:29,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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 20:26:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 7930 transitions. [2022-11-02 20:26:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:26:29,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:29,349 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:29,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:29,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:29,563 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:29,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2034692830, now seen corresponding path program 1 times [2022-11-02 20:26:29,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:29,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647569400] [2022-11-02 20:26:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:29,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:26:30,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:30,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647569400] [2022-11-02 20:26:30,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647569400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:26:30,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857735571] [2022-11-02 20:26:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:30,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:30,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:30,931 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:26:30,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:26:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:31,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 20:26:31,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:31,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:26:31,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:26:31,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:31,356 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 23 treesize of output 22 [2022-11-02 20:26:31,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:31,419 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 23 treesize of output 22 [2022-11-02 20:26:31,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:31,489 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 23 treesize of output 22 [2022-11-02 20:26:31,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:31,561 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 23 treesize of output 22 [2022-11-02 20:26:31,615 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:26:31,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:26:31,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:31,682 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 14 treesize of output 16 [2022-11-02 20:26:31,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:31,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:31,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:31,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:31,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:26:31,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:31,910 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_638 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_638) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-02 20:26:31,918 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_638 (Array Int Int)) (v_ArrVal_637 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_637) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_638) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-02 20:26:32,458 INFO L356 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-02 20:26:32,459 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 5 case distinctions, treesize of input 53 treesize of output 74 [2022-11-02 20:26:32,477 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:26:32,478 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 125 treesize of output 119 [2022-11-02 20:26:32,486 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 106 treesize of output 98 [2022-11-02 20:26:32,495 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 98 treesize of output 94 [2022-11-02 20:26:32,630 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 10 treesize of output 8 [2022-11-02 20:26:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 12 refuted. 3 times theorem prover too weak. 25 trivial. 5 not checked. [2022-11-02 20:26:32,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857735571] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:32,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:26:32,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-11-02 20:26:32,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406305659] [2022-11-02 20:26:32,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:32,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:26:32,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:32,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:26:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=704, Unknown=15, NotChecked=114, Total=992 [2022-11-02 20:26:32,673 INFO L87 Difference]: Start difference. First operand 2193 states and 7930 transitions. Second operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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 20:26:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:33,693 INFO L93 Difference]: Finished difference Result 3100 states and 10136 transitions. [2022-11-02 20:26:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:26:33,694 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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 23 [2022-11-02 20:26:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:33,713 INFO L225 Difference]: With dead ends: 3100 [2022-11-02 20:26:33,713 INFO L226 Difference]: Without dead ends: 3100 [2022-11-02 20:26:33,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=273, Invalid=1126, Unknown=15, NotChecked=146, Total=1560 [2022-11-02 20:26:33,715 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 577 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:33,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 640 Invalid, 0 Unknown, 577 Unchecked, 0.6s Time] [2022-11-02 20:26:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2022-11-02 20:26:33,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2193. [2022-11-02 20:26:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1900 states have (on average 4.173157894736842) internal successors, (7929), 2192 states have internal predecessors, (7929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 7929 transitions. [2022-11-02 20:26:33,865 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 7929 transitions. Word has length 23 [2022-11-02 20:26:33,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:33,866 INFO L495 AbstractCegarLoop]: Abstraction has 2193 states and 7929 transitions. [2022-11-02 20:26:33,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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 20:26:33,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 7929 transitions. [2022-11-02 20:26:33,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 20:26:33,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:33,869 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:33,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:34,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:26:34,083 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:34,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:34,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2034692913, now seen corresponding path program 1 times [2022-11-02 20:26:34,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:34,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709248754] [2022-11-02 20:26:34,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:34,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:26:36,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:36,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709248754] [2022-11-02 20:26:36,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709248754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:26:36,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416264901] [2022-11-02 20:26:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:36,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:36,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:36,863 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:26:36,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:26:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:37,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 20:26:37,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:37,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:37,253 INFO L356 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2022-11-02 20:26:37,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2022-11-02 20:26:37,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:26:37,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:37,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:26:37,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:37,451 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 23 treesize of output 22 [2022-11-02 20:26:37,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:37,525 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 23 treesize of output 22 [2022-11-02 20:26:37,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:37,600 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 23 treesize of output 22 [2022-11-02 20:26:37,686 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:26:37,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:26:37,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:37,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:37,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:37,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:37,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:37,896 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:26:37,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:26:37,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:37,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:37,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:38,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:38,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:38,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:38,086 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 14 treesize of output 16 [2022-11-02 20:26:38,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:26:38,176 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:26:38,177 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 15 treesize of output 10 [2022-11-02 20:26:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:26:38,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:38,427 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_764 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_764) c_~o_0~0.base) c_~o_0~0.offset) 2147483648)) is different from false [2022-11-02 20:26:38,438 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_764 (Array Int Int)) (v_ArrVal_763 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_763) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_764) c_~o_0~0.base) c_~o_0~0.offset) 2147483648)) is different from false [2022-11-02 20:26:39,517 INFO L356 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-02 20:26:39,518 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 5 case distinctions, treesize of input 56 treesize of output 77 [2022-11-02 20:26:39,552 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:26:39,553 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 123 treesize of output 121 [2022-11-02 20:26:39,561 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 108 treesize of output 100 [2022-11-02 20:26:39,570 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 100 treesize of output 96 [2022-11-02 20:26:39,580 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 46 [2022-11-02 20:26:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 17 refuted. 3 times theorem prover too weak. 20 trivial. 5 not checked. [2022-11-02 20:26:39,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416264901] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:39,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:26:39,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 41 [2022-11-02 20:26:39,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909533816] [2022-11-02 20:26:39,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:39,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-02 20:26:39,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:39,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-02 20:26:39,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1433, Unknown=18, NotChecked=158, Total=1806 [2022-11-02 20:26:39,929 INFO L87 Difference]: Start difference. First operand 2193 states and 7929 transitions. Second operand has 43 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:41,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:41,888 INFO L93 Difference]: Finished difference Result 2556 states and 8630 transitions. [2022-11-02 20:26:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:26:41,889 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 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 23 [2022-11-02 20:26:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:41,905 INFO L225 Difference]: With dead ends: 2556 [2022-11-02 20:26:41,905 INFO L226 Difference]: Without dead ends: 2556 [2022-11-02 20:26:41,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=393, Invalid=2353, Unknown=18, NotChecked=206, Total=2970 [2022-11-02 20:26:41,907 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 154 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 479 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:41,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 0 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 567 Invalid, 0 Unknown, 479 Unchecked, 0.7s Time] [2022-11-02 20:26:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-11-02 20:26:41,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2193. [2022-11-02 20:26:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2193 states, 1900 states have (on average 4.077368421052632) internal successors, (7747), 2192 states have internal predecessors, (7747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 7747 transitions. [2022-11-02 20:26:41,990 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 7747 transitions. Word has length 23 [2022-11-02 20:26:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:41,991 INFO L495 AbstractCegarLoop]: Abstraction has 2193 states and 7747 transitions. [2022-11-02 20:26:41,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 7747 transitions. [2022-11-02 20:26:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 20:26:41,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:41,992 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:42,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:42,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:26:42,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:42,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:42,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1349032153, now seen corresponding path program 1 times [2022-11-02 20:26:42,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:42,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606511589] [2022-11-02 20:26:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:42,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:26:44,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:44,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606511589] [2022-11-02 20:26:44,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606511589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:26:44,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299957729] [2022-11-02 20:26:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:44,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:44,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:44,714 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:26:44,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:26:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:44,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 20:26:44,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:45,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:26:45,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:26:45,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:45,173 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 25 treesize of output 24 [2022-11-02 20:26:45,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:45,259 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 25 treesize of output 24 [2022-11-02 20:26:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:45,351 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 25 treesize of output 24 [2022-11-02 20:26:45,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:45,432 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 25 treesize of output 24 [2022-11-02 20:26:45,515 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:26:45,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:26:45,581 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 20:26:45,602 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 20:26:45,621 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 20:26:45,648 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 20:26:45,666 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 20:26:45,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:45,728 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 20:26:45,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:45,867 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 20:26:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:26:45,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:45,943 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_886 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_886) c_~o_2~0.base) (+ c_~o_2~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4)))))) is different from false [2022-11-02 20:26:45,955 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_886 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_886) c_~o_2~0.base) c_~o_2~0.offset) 4294967296))) is different from false [2022-11-02 20:26:45,968 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_886 (Array Int Int)) (v_ArrVal_885 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_885) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_886) c_~o_2~0.base) c_~o_2~0.offset) 4294967296))) is different from false [2022-11-02 20:26:45,978 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_886 (Array Int Int)) (v_ArrVal_885 (Array Int Int)) (v_ArrVal_884 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_884) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_885) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_886) c_~o_2~0.base) c_~o_2~0.offset)))) is different from false [2022-11-02 20:26:46,692 INFO L356 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-02 20:26:46,693 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 5 case distinctions, treesize of input 58 treesize of output 79 [2022-11-02 20:26:46,722 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:26:46,722 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 555 treesize of output 541 [2022-11-02 20:26:46,744 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 526 treesize of output 494 [2022-11-02 20:26:46,758 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 494 treesize of output 478 [2022-11-02 20:26:46,772 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 478 treesize of output 470 [2022-11-02 20:26:47,730 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:26:47,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-11-02 20:26:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 11 refuted. 4 times theorem prover too weak. 25 trivial. 5 not checked. [2022-11-02 20:26:47,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299957729] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:47,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:26:47,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 40 [2022-11-02 20:26:47,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418210874] [2022-11-02 20:26:47,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:47,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 20:26:47,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 20:26:47,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1227, Unknown=18, NotChecked=300, Total=1722 [2022-11-02 20:26:47,836 INFO L87 Difference]: Start difference. First operand 2193 states and 7747 transitions. Second operand has 42 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 41 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 20:26:50,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:50,068 INFO L93 Difference]: Finished difference Result 3111 states and 10031 transitions. [2022-11-02 20:26:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:26:50,069 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 41 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 24 [2022-11-02 20:26:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:50,083 INFO L225 Difference]: With dead ends: 3111 [2022-11-02 20:26:50,083 INFO L226 Difference]: Without dead ends: 3111 [2022-11-02 20:26:50,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=397, Invalid=2357, Unknown=18, NotChecked=420, Total=3192 [2022-11-02 20:26:50,086 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 214 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 949 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:50,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 0 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 703 Invalid, 0 Unknown, 949 Unchecked, 0.9s Time] [2022-11-02 20:26:50,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2022-11-02 20:26:50,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 2215. [2022-11-02 20:26:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 1922 states have (on average 4.081165452653486) internal successors, (7844), 2214 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 7844 transitions. [2022-11-02 20:26:50,222 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 7844 transitions. Word has length 24 [2022-11-02 20:26:50,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:50,224 INFO L495 AbstractCegarLoop]: Abstraction has 2215 states and 7844 transitions. [2022-11-02 20:26:50,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 41 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 20:26:50,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 7844 transitions. [2022-11-02 20:26:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 20:26:50,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:50,232 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:50,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:50,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:26:50,456 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:50,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:50,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1349032232, now seen corresponding path program 1 times [2022-11-02 20:26:50,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:50,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089669637] [2022-11-02 20:26:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:50,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:26:51,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:51,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089669637] [2022-11-02 20:26:51,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089669637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:26:51,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051871490] [2022-11-02 20:26:51,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:51,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:51,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:51,842 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:26:51,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:26:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:52,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-02 20:26:52,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:52,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:26:52,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:26:52,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:52,288 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 23 treesize of output 22 [2022-11-02 20:26:52,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:52,356 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 23 treesize of output 22 [2022-11-02 20:26:52,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:52,463 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 23 treesize of output 22 [2022-11-02 20:26:52,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:52,541 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 23 treesize of output 22 [2022-11-02 20:26:52,617 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:26:52,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:26:52,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:52,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:52,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:52,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:52,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:52,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:52,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:52,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:52,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:26:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:26:52,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:53,006 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1008 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1008) c_~o_2~0.base) (+ c_~o_2~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) 9223372039002259456)) is different from false [2022-11-02 20:26:53,016 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1008 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1008) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-02 20:26:53,027 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1008 (Array Int Int)) (v_ArrVal_1007 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1007) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1008) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-02 20:26:53,036 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1008 (Array Int Int)) (v_ArrVal_1007 (Array Int Int)) (v_ArrVal_1006 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1006) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1007) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1008) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-02 20:26:53,688 INFO L356 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-02 20:26:53,689 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 5 case distinctions, treesize of input 56 treesize of output 77 [2022-11-02 20:26:53,704 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:26:53,705 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 123 treesize of output 121 [2022-11-02 20:26:53,711 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 108 treesize of output 100 [2022-11-02 20:26:53,718 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 100 treesize of output 96 [2022-11-02 20:26:53,728 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 46 [2022-11-02 20:26:53,922 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:26:53,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-11-02 20:26:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 12 refuted. 3 times theorem prover too weak. 25 trivial. 5 not checked. [2022-11-02 20:26:54,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051871490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:54,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:26:54,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-11-02 20:26:54,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988512902] [2022-11-02 20:26:54,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:54,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 20:26:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:54,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 20:26:54,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=842, Unknown=17, NotChecked=252, Total=1260 [2022-11-02 20:26:54,024 INFO L87 Difference]: Start difference. First operand 2215 states and 7844 transitions. Second operand has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 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 20:26:55,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:55,673 INFO L93 Difference]: Finished difference Result 3100 states and 9988 transitions. [2022-11-02 20:26:55,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:26:55,674 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 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 24 [2022-11-02 20:26:55,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:55,682 INFO L225 Difference]: With dead ends: 3100 [2022-11-02 20:26:55,683 INFO L226 Difference]: Without dead ends: 3100 [2022-11-02 20:26:55,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=365, Invalid=1704, Unknown=17, NotChecked=364, Total=2450 [2022-11-02 20:26:55,684 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 154 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 998 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:55,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 0 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 635 Invalid, 0 Unknown, 998 Unchecked, 0.7s Time] [2022-11-02 20:26:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2022-11-02 20:26:55,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2215. [2022-11-02 20:26:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 1922 states have (on average 4.069719042663892) internal successors, (7822), 2214 states have internal predecessors, (7822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 7822 transitions. [2022-11-02 20:26:55,766 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 7822 transitions. Word has length 24 [2022-11-02 20:26:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:55,767 INFO L495 AbstractCegarLoop]: Abstraction has 2215 states and 7822 transitions. [2022-11-02 20:26:55,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 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 20:26:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 7822 transitions. [2022-11-02 20:26:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 20:26:55,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:55,768 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:55,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:55,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:26:55,995 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:26:55,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:55,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1348819185, now seen corresponding path program 1 times [2022-11-02 20:26:55,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:55,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931072514] [2022-11-02 20:26:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:55,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:26:58,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:58,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931072514] [2022-11-02 20:26:58,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931072514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:26:58,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830096251] [2022-11-02 20:26:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:58,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:26:58,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:26:58,623 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:26:58,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:26:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:58,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-02 20:26:58,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:58,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:58,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:59,044 INFO L356 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-02 20:26:59,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-02 20:26:59,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:26:59,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:59,194 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 25 treesize of output 24 [2022-11-02 20:26:59,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:59,278 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 25 treesize of output 24 [2022-11-02 20:26:59,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:59,358 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 25 treesize of output 24 [2022-11-02 20:26:59,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:26:59,437 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 25 treesize of output 24 [2022-11-02 20:26:59,519 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:26:59,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:26:59,595 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 20:26:59,625 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 20:26:59,647 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 20:26:59,667 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 20:26:59,701 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 20:26:59,779 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:26:59,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:26:59,852 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 20:26:59,876 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 20:26:59,903 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 20:26:59,921 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 20:26:59,940 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 20:27:00,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:00,010 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 20:27:00,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:00,130 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 20:27:00,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-02 20:27:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:27:00,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:00,279 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1139 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1139) c_~o_0~0.base) (+ c_~o_0~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4)))))) is different from false [2022-11-02 20:27:00,285 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1139 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1139) c_~o_0~0.base) c_~o_0~0.offset) 2147483649))) is different from false [2022-11-02 20:27:00,296 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1139 (Array Int Int)) (v_ArrVal_1138 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1138) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1139) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2022-11-02 20:27:00,304 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1139 (Array Int Int)) (v_ArrVal_1138 (Array Int Int)) (v_ArrVal_1137 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1137) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1138) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1139) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2022-11-02 20:27:01,390 INFO L356 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-02 20:27:01,391 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 5 case distinctions, treesize of input 61 treesize of output 82 [2022-11-02 20:27:01,420 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:27:01,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2195 treesize of output 2165 [2022-11-02 20:27:01,455 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 2150 treesize of output 2022 [2022-11-02 20:27:01,489 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 2022 treesize of output 1990 [2022-11-02 20:27:01,521 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 1990 treesize of output 1926 [2022-11-02 20:27:01,561 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 970 treesize of output 954 [2022-11-02 20:27:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 17 refuted. 3 times theorem prover too weak. 20 trivial. 5 not checked. [2022-11-02 20:27:17,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830096251] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:17,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:27:17,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 44 [2022-11-02 20:27:17,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224988776] [2022-11-02 20:27:17,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:17,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-02 20:27:17,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:17,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-02 20:27:17,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1503, Unknown=27, NotChecked=332, Total=2070 [2022-11-02 20:27:17,345 INFO L87 Difference]: Start difference. First operand 2215 states and 7822 transitions. Second operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:19,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:19,085 INFO L93 Difference]: Finished difference Result 2917 states and 10235 transitions. [2022-11-02 20:27:19,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:27:19,085 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 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 24 [2022-11-02 20:27:19,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:19,099 INFO L225 Difference]: With dead ends: 2917 [2022-11-02 20:27:19,100 INFO L226 Difference]: Without dead ends: 2917 [2022-11-02 20:27:19,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=329, Invalid=2012, Unknown=27, NotChecked=388, Total=2756 [2022-11-02 20:27:19,102 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 150 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1195 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:19,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 0 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 847 Invalid, 0 Unknown, 1195 Unchecked, 0.9s Time] [2022-11-02 20:27:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-11-02 20:27:19,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2385. [2022-11-02 20:27:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2385 states, 2092 states have (on average 4.259560229445507) internal successors, (8911), 2384 states have internal predecessors, (8911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2385 states to 2385 states and 8911 transitions. [2022-11-02 20:27:19,192 INFO L78 Accepts]: Start accepts. Automaton has 2385 states and 8911 transitions. Word has length 24 [2022-11-02 20:27:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:19,192 INFO L495 AbstractCegarLoop]: Abstraction has 2385 states and 8911 transitions. [2022-11-02 20:27:19,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2385 states and 8911 transitions. [2022-11-02 20:27:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 20:27:19,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:19,194 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:19,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:19,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:19,419 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:27:19,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:19,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1348819179, now seen corresponding path program 1 times [2022-11-02 20:27:19,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:19,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074371533] [2022-11-02 20:27:19,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:19,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:27:21,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:21,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074371533] [2022-11-02 20:27:21,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074371533] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:27:21,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136143883] [2022-11-02 20:27:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:21,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:21,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:27:21,178 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:27:21,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:27:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:21,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-02 20:27:21,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:21,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:21,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:21,557 INFO L356 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-02 20:27:21,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-02 20:27:21,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:27:21,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:21,699 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 23 treesize of output 22 [2022-11-02 20:27:21,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:21,761 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 23 treesize of output 22 [2022-11-02 20:27:21,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:21,838 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 23 treesize of output 22 [2022-11-02 20:27:21,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:21,921 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 23 treesize of output 22 [2022-11-02 20:27:22,004 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:27:22,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:27:22,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:27:22,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:27:22,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:27:22,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:27:22,192 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 14 treesize of output 16 [2022-11-02 20:27:22,261 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:27:22,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:27:22,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:27:22,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:27:22,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:27:22,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:27:22,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:27:22,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:22,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:27:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:22,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:27:22,610 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:27:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:27:22,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:22,843 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1270 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1270) c_~o_0~0.base) (+ c_~o_0~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) 2147483648)) is different from false [2022-11-02 20:27:22,850 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1270 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1270) c_~o_0~0.base) c_~o_0~0.offset) 2147483648)) is different from false [2022-11-02 20:27:22,860 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1269 (Array Int Int)) (v_ArrVal_1270 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1269) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1270) c_~o_0~0.base) c_~o_0~0.offset) 2147483648)) is different from false [2022-11-02 20:27:22,868 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1269 (Array Int Int)) (v_ArrVal_1268 (Array Int Int)) (v_ArrVal_1270 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1268) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1269) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1270) c_~o_0~0.base) c_~o_0~0.offset) 2147483648)) is different from false [2022-11-02 20:27:23,797 INFO L356 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-02 20:27:23,798 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 5 case distinctions, treesize of input 59 treesize of output 80 [2022-11-02 20:27:23,817 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:27:23,817 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 243 treesize of output 241 [2022-11-02 20:27:23,830 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 114 treesize of output 112 [2022-11-02 20:27:23,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 218 [2022-11-02 20:27:23,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 218 treesize of output 202 [2022-11-02 20:27:23,858 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 202 treesize of output 198 [2022-11-02 20:27:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 17 refuted. 3 times theorem prover too weak. 20 trivial. 5 not checked. [2022-11-02 20:27:24,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136143883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:24,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:27:24,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 41 [2022-11-02 20:27:24,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152468745] [2022-11-02 20:27:24,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:24,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-02 20:27:24,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:24,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-02 20:27:24,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1256, Unknown=27, NotChecked=308, Total=1806 [2022-11-02 20:27:24,240 INFO L87 Difference]: Start difference. First operand 2385 states and 8911 transitions. Second operand has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:24,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:24,994 INFO L93 Difference]: Finished difference Result 2736 states and 9613 transitions. [2022-11-02 20:27:24,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:27:24,995 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 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 24 [2022-11-02 20:27:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:25,003 INFO L225 Difference]: With dead ends: 2736 [2022-11-02 20:27:25,004 INFO L226 Difference]: Without dead ends: 2736 [2022-11-02 20:27:25,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=255, Invalid=1374, Unknown=27, NotChecked=324, Total=1980 [2022-11-02 20:27:25,005 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 170 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1001 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:25,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 0 Invalid, 1500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 470 Invalid, 0 Unknown, 1001 Unchecked, 0.5s Time] [2022-11-02 20:27:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-11-02 20:27:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2204. [2022-11-02 20:27:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1911 states have (on average 4.064887493458922) internal successors, (7768), 2203 states have internal predecessors, (7768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 7768 transitions. [2022-11-02 20:27:25,078 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 7768 transitions. Word has length 24 [2022-11-02 20:27:25,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:25,079 INFO L495 AbstractCegarLoop]: Abstraction has 2204 states and 7768 transitions. [2022-11-02 20:27:25,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 7768 transitions. [2022-11-02 20:27:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:27:25,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:25,080 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:25,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:25,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:27:25,295 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:27:25,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:25,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1129819023, now seen corresponding path program 1 times [2022-11-02 20:27:25,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:25,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909965012] [2022-11-02 20:27:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:25,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:27:27,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:27,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909965012] [2022-11-02 20:27:27,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909965012] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:27:27,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011109410] [2022-11-02 20:27:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:27,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:27,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:27:27,587 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:27:27,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:27:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:27,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 20:27:27,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:27,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:27,975 INFO L356 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2022-11-02 20:27:27,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2022-11-02 20:27:28,083 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 20:27:28,156 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:28,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 26 [2022-11-02 20:27:28,240 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:28,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 26 [2022-11-02 20:27:28,317 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:28,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 26 [2022-11-02 20:27:28,389 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:27:28,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:27:28,450 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 20:27:28,471 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 20:27:28,491 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 20:27:28,508 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 20:27:28,529 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 20:27:28,596 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:27:28,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:27:28,652 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 20:27:28,664 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 20:27:28,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:27:28,701 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 20:27:28,715 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 20:27:28,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:28,765 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 20:27:28,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-02 20:27:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:27:28,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:28,943 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1394 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1394) c_~o_0~0.base) (+ c_~o_0~0.offset 4)) 2147483648))) is different from false [2022-11-02 20:27:28,951 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1394 (Array Int Int)) (v_ArrVal_1393 (Array Int Int))) (<= 0 (+ 2147483648 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1393) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1394) c_~o_0~0.base) (+ c_~o_0~0.offset 4))))) is different from false [2022-11-02 20:27:29,706 INFO L356 Elim1Store]: treesize reduction 203, result has 19.4 percent of original size [2022-11-02 20:27:29,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 53 treesize of output 69 [2022-11-02 20:27:29,730 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:27:29,734 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 153 [2022-11-02 20:27:29,742 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 138 treesize of output 130 [2022-11-02 20:27:29,750 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 114 [2022-11-02 20:27:29,760 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 54 [2022-11-02 20:27:30,200 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 21 refuted. 1 times theorem prover too weak. 20 trivial. 5 not checked. [2022-11-02 20:27:30,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011109410] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:30,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:27:30,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 40 [2022-11-02 20:27:30,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334659738] [2022-11-02 20:27:30,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:30,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 20:27:30,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:30,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 20:27:30,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1385, Unknown=16, NotChecked=154, Total=1722 [2022-11-02 20:27:30,203 INFO L87 Difference]: Start difference. First operand 2204 states and 7768 transitions. Second operand has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:31,931 INFO L93 Difference]: Finished difference Result 2754 states and 10190 transitions. [2022-11-02 20:27:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:27:31,931 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 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 25 [2022-11-02 20:27:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:31,942 INFO L225 Difference]: With dead ends: 2754 [2022-11-02 20:27:31,942 INFO L226 Difference]: Without dead ends: 2754 [2022-11-02 20:27:31,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=339, Invalid=2203, Unknown=16, NotChecked=198, Total=2756 [2022-11-02 20:27:31,943 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 214 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 830 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:31,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 0 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 843 Invalid, 0 Unknown, 830 Unchecked, 0.8s Time] [2022-11-02 20:27:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2022-11-02 20:27:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2387. [2022-11-02 20:27:32,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 2094 states have (on average 4.4426934097421205) internal successors, (9303), 2386 states have internal predecessors, (9303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 9303 transitions. [2022-11-02 20:27:32,033 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 9303 transitions. Word has length 25 [2022-11-02 20:27:32,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:32,033 INFO L495 AbstractCegarLoop]: Abstraction has 2387 states and 9303 transitions. [2022-11-02 20:27:32,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:32,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 9303 transitions. [2022-11-02 20:27:32,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:27:32,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:32,035 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:32,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:32,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:27:32,263 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:27:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1129819025, now seen corresponding path program 1 times [2022-11-02 20:27:32,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:32,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425943051] [2022-11-02 20:27:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:32,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:27:34,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:34,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425943051] [2022-11-02 20:27:34,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425943051] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:27:34,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304290353] [2022-11-02 20:27:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:34,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:34,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:27:34,375 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:27:34,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:27:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:34,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 20:27:34,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:34,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:27:34,795 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 20:27:34,865 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:34,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 26 [2022-11-02 20:27:34,939 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:34,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 26 [2022-11-02 20:27:35,004 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:35,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 26 [2022-11-02 20:27:35,067 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:27:35,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:27:35,123 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 20:27:35,137 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 20:27:35,150 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 20:27:35,162 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 20:27:35,173 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 20:27:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:35,243 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 20:27:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:27:35,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:35,525 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1509 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1509) c_~o_2~0.base) (+ c_~o_2~0.offset 4)) 4294967296))) is different from false [2022-11-02 20:27:35,532 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1509 (Array Int Int)) (v_ArrVal_1508 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1508) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1509) c_~o_2~0.base) (+ c_~o_2~0.offset 4)) 4294967296))) is different from false [2022-11-02 20:27:36,025 INFO L356 Elim1Store]: treesize reduction 203, result has 19.4 percent of original size [2022-11-02 20:27:36,025 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 4 case distinctions, treesize of input 50 treesize of output 66 [2022-11-02 20:27:36,040 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:27:36,041 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 20:27:36,049 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 59 [2022-11-02 20:27:36,056 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 20:27:36,275 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 10 treesize of output 8 [2022-11-02 20:27:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 16 refuted. 1 times theorem prover too weak. 25 trivial. 5 not checked. [2022-11-02 20:27:36,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304290353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:36,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:27:36,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 41 [2022-11-02 20:27:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508459762] [2022-11-02 20:27:36,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:36,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-02 20:27:36,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:36,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-02 20:27:36,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1475, Unknown=9, NotChecked=158, Total=1806 [2022-11-02 20:27:36,337 INFO L87 Difference]: Start difference. First operand 2387 states and 9303 transitions. Second operand has 43 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:39,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:39,987 INFO L93 Difference]: Finished difference Result 3317 states and 11552 transitions. [2022-11-02 20:27:39,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 20:27:39,988 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-02 20:27:39,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:40,003 INFO L225 Difference]: With dead ends: 3317 [2022-11-02 20:27:40,003 INFO L226 Difference]: Without dead ends: 3317 [2022-11-02 20:27:40,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=618, Invalid=4073, Unknown=9, NotChecked=270, Total=4970 [2022-11-02 20:27:40,005 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 289 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 643 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:40,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 0 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 939 Invalid, 0 Unknown, 643 Unchecked, 1.0s Time] [2022-11-02 20:27:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2022-11-02 20:27:40,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 2387. [2022-11-02 20:27:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 2094 states have (on average 4.442215854823305) internal successors, (9302), 2386 states have internal predecessors, (9302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 9302 transitions. [2022-11-02 20:27:40,095 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 9302 transitions. Word has length 25 [2022-11-02 20:27:40,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:40,095 INFO L495 AbstractCegarLoop]: Abstraction has 2387 states and 9302 transitions. [2022-11-02 20:27:40,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:40,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 9302 transitions. [2022-11-02 20:27:40,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:27:40,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:40,097 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:40,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:40,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:27:40,315 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:27:40,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:40,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1129818946, now seen corresponding path program 1 times [2022-11-02 20:27:40,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:40,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329811099] [2022-11-02 20:27:40,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:40,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:27:42,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:42,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329811099] [2022-11-02 20:27:42,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329811099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:27:42,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923881499] [2022-11-02 20:27:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:42,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:42,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:27:42,235 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:27:42,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:27:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:42,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 20:27:42,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:42,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:27:42,712 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 20:27:42,779 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:42,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 24 [2022-11-02 20:27:42,864 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:42,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 24 [2022-11-02 20:27:42,941 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:42,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 24 [2022-11-02 20:27:43,003 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:27:43,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:27:43,057 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 20:27:43,069 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 20:27:43,080 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 20:27:43,092 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 20:27:43,102 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 20:27:43,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:43,146 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 16 treesize of output 18 [2022-11-02 20:27:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:27:43,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:43,406 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1624 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1624) c_~o_2~0.base) (+ c_~o_2~0.offset 4)) 9223372039002259456)) is different from false [2022-11-02 20:27:43,412 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1624 (Array Int Int)) (v_ArrVal_1623 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1623) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1624) c_~o_2~0.base) (+ c_~o_2~0.offset 4)) 9223372039002259456)) is different from false [2022-11-02 20:27:43,899 INFO L356 Elim1Store]: treesize reduction 203, result has 19.4 percent of original size [2022-11-02 20:27:43,899 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 4 case distinctions, treesize of input 48 treesize of output 64 [2022-11-02 20:27:43,916 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:27:43,917 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 20:27:43,925 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 20:27:43,931 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 20:27:44,159 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 10 treesize of output 8 [2022-11-02 20:27:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 16 refuted. 1 times theorem prover too weak. 25 trivial. 5 not checked. [2022-11-02 20:27:44,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923881499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:44,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:27:44,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 41 [2022-11-02 20:27:44,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468702225] [2022-11-02 20:27:44,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:44,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-02 20:27:44,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:44,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-02 20:27:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1474, Unknown=9, NotChecked=158, Total=1806 [2022-11-02 20:27:44,218 INFO L87 Difference]: Start difference. First operand 2387 states and 9302 transitions. Second operand has 43 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:46,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:46,165 INFO L93 Difference]: Finished difference Result 3295 states and 11509 transitions. [2022-11-02 20:27:46,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 20:27:46,165 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-02 20:27:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:46,178 INFO L225 Difference]: With dead ends: 3295 [2022-11-02 20:27:46,178 INFO L226 Difference]: Without dead ends: 3295 [2022-11-02 20:27:46,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=345, Invalid=2733, Unknown=10, NotChecked=218, Total=3306 [2022-11-02 20:27:46,179 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 586 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:46,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1157 Invalid, 0 Unknown, 586 Unchecked, 1.0s Time] [2022-11-02 20:27:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2022-11-02 20:27:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2387. [2022-11-02 20:27:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 2094 states have (on average 4.441738299904489) internal successors, (9301), 2386 states have internal predecessors, (9301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 9301 transitions. [2022-11-02 20:27:46,268 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 9301 transitions. Word has length 25 [2022-11-02 20:27:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:46,268 INFO L495 AbstractCegarLoop]: Abstraction has 2387 states and 9301 transitions. [2022-11-02 20:27:46,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 9301 transitions. [2022-11-02 20:27:46,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:27:46,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:46,270 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:46,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:46,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:27:46,483 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:27:46,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:46,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1129819029, now seen corresponding path program 1 times [2022-11-02 20:27:46,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:46,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997235357] [2022-11-02 20:27:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:46,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:27:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:48,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997235357] [2022-11-02 20:27:48,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997235357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:27:48,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012181565] [2022-11-02 20:27:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:48,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:48,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:27:48,647 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:27:48,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:27:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:48,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-02 20:27:48,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:48,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:48,994 INFO L356 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2022-11-02 20:27:48,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2022-11-02 20:27:49,095 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 20:27:49,156 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:49,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 24 [2022-11-02 20:27:49,226 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:49,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 24 [2022-11-02 20:27:49,294 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-11-02 20:27:49,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 24 [2022-11-02 20:27:49,363 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:27:49,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:27:49,422 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 20:27:49,438 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 16 treesize of output 18 [2022-11-02 20:27:49,452 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 20:27:49,467 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 20:27:49,485 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 20:27:49,546 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:27:49,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:27:49,601 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 20:27:49,610 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 20:27:49,625 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 20:27:49,637 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 20:27:49,649 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 20:27:49,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:49,706 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 20:27:49,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-02 20:27:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:27:49,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:50,055 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1748 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1748) c_~o_0~0.base) (+ c_~o_0~0.offset 4)) 2147483647)) is different from false [2022-11-02 20:27:50,062 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1747 (Array Int Int)) (v_ArrVal_1748 (Array Int Int))) (<= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1747) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1748) c_~o_0~0.base) (+ c_~o_0~0.offset 4)) 2147483647)) is different from false [2022-11-02 20:27:50,842 INFO L356 Elim1Store]: treesize reduction 203, result has 19.4 percent of original size [2022-11-02 20:27:50,843 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 4 case distinctions, treesize of input 51 treesize of output 67 [2022-11-02 20:27:50,858 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:27:50,859 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 277 treesize of output 267 [2022-11-02 20:27:50,867 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 254 treesize of output 222 [2022-11-02 20:27:50,876 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 222 treesize of output 206 [2022-11-02 20:27:50,886 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 107 treesize of output 99 [2022-11-02 20:27:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 21 refuted. 1 times theorem prover too weak. 20 trivial. 5 not checked. [2022-11-02 20:27:51,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012181565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:51,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:27:51,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 43 [2022-11-02 20:27:51,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185581500] [2022-11-02 20:27:51,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:51,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-02 20:27:51,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-02 20:27:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1634, Unknown=12, NotChecked=166, Total=1980 [2022-11-02 20:27:51,405 INFO L87 Difference]: Start difference. First operand 2387 states and 9301 transitions. Second operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 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 20:27:53,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:53,624 INFO L93 Difference]: Finished difference Result 2751 states and 10003 transitions. [2022-11-02 20:27:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:27:53,624 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 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 25 [2022-11-02 20:27:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:53,634 INFO L225 Difference]: With dead ends: 2751 [2022-11-02 20:27:53,635 INFO L226 Difference]: Without dead ends: 2751 [2022-11-02 20:27:53,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=362, Invalid=2604, Unknown=12, NotChecked=214, Total=3192 [2022-11-02 20:27:53,636 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 506 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:53,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1172 Invalid, 0 Unknown, 506 Unchecked, 1.1s Time] [2022-11-02 20:27:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2022-11-02 20:27:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2387. [2022-11-02 20:27:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 2094 states have (on average 4.354823304680038) internal successors, (9119), 2386 states have internal predecessors, (9119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 9119 transitions. [2022-11-02 20:27:53,714 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 9119 transitions. Word has length 25 [2022-11-02 20:27:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:53,714 INFO L495 AbstractCegarLoop]: Abstraction has 2387 states and 9119 transitions. [2022-11-02 20:27:53,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 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 20:27:53,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 9119 transitions. [2022-11-02 20:27:53,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:27:53,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:53,715 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:53,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:53,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:53,931 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:27:53,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:53,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1045906187, now seen corresponding path program 1 times [2022-11-02 20:27:53,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:53,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344832150] [2022-11-02 20:27:53,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:53,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:27:54,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:54,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344832150] [2022-11-02 20:27:54,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344832150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:27:54,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:27:54,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:27:54,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73437540] [2022-11-02 20:27:54,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:27:54,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:27:54,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:27:54,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:27:54,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:27:54,056 INFO L87 Difference]: Start difference. First operand 2387 states and 9119 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:54,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:54,304 INFO L93 Difference]: Finished difference Result 4028 states and 15448 transitions. [2022-11-02 20:27:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:27:54,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-02 20:27:54,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:54,325 INFO L225 Difference]: With dead ends: 4028 [2022-11-02 20:27:54,325 INFO L226 Difference]: Without dead ends: 4028 [2022-11-02 20:27:54,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:27:54,328 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:54,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:27:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2022-11-02 20:27:54,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 2853. [2022-11-02 20:27:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2560 states have (on average 4.7203125) internal successors, (12084), 2852 states have internal predecessors, (12084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:54,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 12084 transitions. [2022-11-02 20:27:54,448 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 12084 transitions. Word has length 25 [2022-11-02 20:27:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:54,448 INFO L495 AbstractCegarLoop]: Abstraction has 2853 states and 12084 transitions. [2022-11-02 20:27:54,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 12084 transitions. [2022-11-02 20:27:54,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 20:27:54,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:54,450 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:54,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:27:54,451 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-02 20:27:54,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:54,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1045906160, now seen corresponding path program 1 times [2022-11-02 20:27:54,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:27:54,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656107949] [2022-11-02 20:27:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:54,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:27:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 20:27:56,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:27:56,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656107949] [2022-11-02 20:27:56,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656107949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:27:56,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817452913] [2022-11-02 20:27:56,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:27:56,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:27:56,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:27:56,043 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:27:56,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a03dd1b8-c079-4c98-8ef8-81fd131cfa4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:27:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:56,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-02 20:27:56,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:56,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:56,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:56,474 INFO L356 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-02 20:27:56,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-02 20:27:56,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:27:56,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:56,617 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 25 treesize of output 24 [2022-11-02 20:27:56,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:56,683 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 25 treesize of output 24 [2022-11-02 20:27:56,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:56,760 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 25 treesize of output 24 [2022-11-02 20:27:56,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:56,844 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 25 treesize of output 24 [2022-11-02 20:27:56,989 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:27:56,990 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:27:57,064 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 20:27:57,082 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 20:27:57,116 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 20:27:57,129 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 20:27:57,167 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 20:27:57,266 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:27:57,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:27:57,329 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 20:27:57,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 20:27:57,372 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 20:27:57,387 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 20:27:57,411 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 16 treesize of output 18 [2022-11-02 20:27:57,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:57,462 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 20:27:57,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:27:57,523 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 20:27:57,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-02 20:27:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:27:57,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:57,741 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1931 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1931) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2022-11-02 20:27:57,750 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1930 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1930) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1931) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2022-11-02 20:27:57,757 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1931 (Array Int Int)) (v_ArrVal_1930 (Array Int Int)) (v_ArrVal_1929 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1929) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1930) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1931) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2022-11-02 20:27:58,634 INFO L356 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-02 20:27:58,634 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 5 case distinctions, treesize of input 61 treesize of output 82 [2022-11-02 20:27:58,664 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:27:58,666 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 35075 treesize of output 34565 [2022-11-02 20:27:58,857 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 34550 treesize of output 34038 [2022-11-02 20:27:59,050 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 34038 treesize of output 33782 [2022-11-02 20:27:59,243 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 33782 treesize of output 32758 [2022-11-02 20:27:59,569 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 32758 treesize of output 30710