./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.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_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/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_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/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_226f7cd0-9e80-40de-9357-8e9346049939/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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- 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 20:46:21,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:46:21,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:46:21,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:46:21,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:46:21,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:46:21,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:46:21,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:46:21,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:46:21,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:46:21,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:46:21,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:46:21,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:46:21,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:46:21,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:46:21,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:46:21,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:46:21,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:46:21,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:46:21,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:46:21,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:46:21,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:46:21,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:46:21,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:46:21,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:46:21,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:46:21,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:46:21,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:46:21,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:46:21,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:46:21,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:46:21,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:46:21,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:46:21,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:46:21,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:46:21,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:46:21,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:46:21,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:46:21,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:46:21,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:46:21,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:46:21,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:46:21,617 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:46:21,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:46:21,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:46:21,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:46:21,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:46:21,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:46:21,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:46:21,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:46:21,620 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:46:21,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:46:21,622 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:46:21,622 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:46:21,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:46:21,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:46:21,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:46:21,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:46:21,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:46:21,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:46:21,624 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:46:21,624 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:46:21,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:46:21,624 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:46:21,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:46:21,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:46:21,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:46:21,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:46:21,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:46:21,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:46:21,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:46:21,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:46:21,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:46:21,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:46:21,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:46:21,627 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_226f7cd0-9e80-40de-9357-8e9346049939/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2022-11-02 20:46:21,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:46:22,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:46:22,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:46:22,014 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:46:22,015 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:46:22,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-02 20:46:22,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/data/98d917aa8/66f61a9caff34c2eb5d30383561d5794/FLAGe9a41a84f [2022-11-02 20:46:22,631 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:46:22,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-02 20:46:22,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/data/98d917aa8/66f61a9caff34c2eb5d30383561d5794/FLAGe9a41a84f [2022-11-02 20:46:22,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/data/98d917aa8/66f61a9caff34c2eb5d30383561d5794 [2022-11-02 20:46:22,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:46:22,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:46:22,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:46:22,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:46:22,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:46:22,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:46:22" (1/1) ... [2022-11-02 20:46:22,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb26e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:22, skipping insertion in model container [2022-11-02 20:46:22,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:46:22" (1/1) ... [2022-11-02 20:46:23,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:46:23,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:46:23,353 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_226f7cd0-9e80-40de-9357-8e9346049939/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-02 20:46:23,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:46:23,389 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:46:23,433 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_226f7cd0-9e80-40de-9357-8e9346049939/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-02 20:46:23,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:46:23,468 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:46:23,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23 WrapperNode [2022-11-02 20:46:23,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:46:23,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:46:23,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:46:23,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:46:23,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (1/1) ... [2022-11-02 20:46:23,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (1/1) ... [2022-11-02 20:46:23,548 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 116 [2022-11-02 20:46:23,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:46:23,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:46:23,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:46:23,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:46:23,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (1/1) ... [2022-11-02 20:46:23,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (1/1) ... [2022-11-02 20:46:23,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (1/1) ... [2022-11-02 20:46:23,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (1/1) ... [2022-11-02 20:46:23,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (1/1) ... [2022-11-02 20:46:23,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (1/1) ... [2022-11-02 20:46:23,609 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (1/1) ... [2022-11-02 20:46:23,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (1/1) ... [2022-11-02 20:46:23,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:46:23,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:46:23,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:46:23,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:46:23,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (1/1) ... [2022-11-02 20:46:23,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:46:23,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:23,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:46:23,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:46:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:46:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:46:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:46:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:46:23,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:46:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:46:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:46:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:46:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:46:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:46:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:46:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:46:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:46:23,737 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 20:46:23,864 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:46:23,866 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:46:24,332 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:46:24,350 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:46:24,350 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:46:24,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:46:24 BoogieIcfgContainer [2022-11-02 20:46:24,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:46:24,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:46:24,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:46:24,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:46:24,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:46:22" (1/3) ... [2022-11-02 20:46:24,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c11acaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:46:24, skipping insertion in model container [2022-11-02 20:46:24,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:46:23" (2/3) ... [2022-11-02 20:46:24,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c11acaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:46:24, skipping insertion in model container [2022-11-02 20:46:24,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:46:24" (3/3) ... [2022-11-02 20:46:24,366 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2022-11-02 20:46:24,399 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:46:24,411 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:46:24,411 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-02 20:46:24,411 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:46:24,523 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:46:24,581 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:46:24,605 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 189 transitions, 394 flow [2022-11-02 20:46:24,617 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 189 transitions, 394 flow [2022-11-02 20:46:24,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 189 transitions, 394 flow [2022-11-02 20:46:24,737 INFO L130 PetriNetUnfolder]: 15/187 cut-off events. [2022-11-02 20:46:24,740 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:46:24,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 187 events. 15/187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 165 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2022-11-02 20:46:24,749 INFO L118 LiptonReduction]: Number of co-enabled transitions 1400 [2022-11-02 20:46:32,649 INFO L133 LiptonReduction]: Checked pairs total: 1984 [2022-11-02 20:46:32,650 INFO L135 LiptonReduction]: Total number of compositions: 218 [2022-11-02 20:46:32,658 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 29 transitions, 74 flow [2022-11-02 20:46:32,676 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 62 states, 50 states have (on average 2.9) internal successors, (145), 61 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:32,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:46:32,699 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;@70877329, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:46:32,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-02 20:46:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 50 states have (on average 2.9) internal successors, (145), 61 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:32,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-02 20:46:32,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:32,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-02 20:46:32,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:32,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:32,715 INFO L85 PathProgramCache]: Analyzing trace with hash 23435, now seen corresponding path program 1 times [2022-11-02 20:46:32,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:32,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286598867] [2022-11-02 20:46:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:33,030 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 20:46:33,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:33,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286598867] [2022-11-02 20:46:33,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286598867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:33,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:33,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:46:33,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130828166] [2022-11-02 20:46:33,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:33,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:33,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:33,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:33,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:33,080 INFO L87 Difference]: Start difference. First operand has 62 states, 50 states have (on average 2.9) internal successors, (145), 61 states have internal predecessors, (145), 0 states have call successors, (0), 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 20:46:33,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:33,227 INFO L93 Difference]: Finished difference Result 119 states and 285 transitions. [2022-11-02 20:46:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:33,230 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 20:46:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:33,246 INFO L225 Difference]: With dead ends: 119 [2022-11-02 20:46:33,246 INFO L226 Difference]: Without dead ends: 119 [2022-11-02 20:46:33,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:33,251 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:33,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:46:33,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-02 20:46:33,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 64. [2022-11-02 20:46:33,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 2.8653846153846154) internal successors, (149), 63 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 149 transitions. [2022-11-02 20:46:33,296 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 149 transitions. Word has length 2 [2022-11-02 20:46:33,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:33,296 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 149 transitions. [2022-11-02 20:46:33,296 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 20:46:33,297 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 149 transitions. [2022-11-02 20:46:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:46:33,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:33,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:46:33,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:46:33,298 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:33,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash 727228, now seen corresponding path program 1 times [2022-11-02 20:46:33,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:33,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036645783] [2022-11-02 20:46:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:33,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:33,501 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 20:46:33,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:33,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036645783] [2022-11-02 20:46:33,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036645783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:33,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659660821] [2022-11-02 20:46:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:33,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:33,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:33,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:33,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:46:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:33,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:46:33,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:33,701 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 20:46:33,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:33,735 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 20:46:33,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659660821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:33,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:33,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-02 20:46:33,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397492786] [2022-11-02 20:46:33,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:33,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:46:33,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:46:33,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:46:33,739 INFO L87 Difference]: Start difference. First operand 64 states and 149 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 20:46:34,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:34,087 INFO L93 Difference]: Finished difference Result 290 states and 711 transitions. [2022-11-02 20:46:34,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:46:34,090 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 20:46:34,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:34,093 INFO L225 Difference]: With dead ends: 290 [2022-11-02 20:46:34,093 INFO L226 Difference]: Without dead ends: 290 [2022-11-02 20:46:34,094 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 20:46:34,095 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 125 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:34,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 0 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:46:34,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-02 20:46:34,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 70. [2022-11-02 20:46:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 2.8793103448275863) internal successors, (167), 69 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:34,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 167 transitions. [2022-11-02 20:46:34,121 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 167 transitions. Word has length 3 [2022-11-02 20:46:34,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:34,122 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 167 transitions. [2022-11-02 20:46:34,122 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 20:46:34,122 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 167 transitions. [2022-11-02 20:46:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 20:46:34,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:34,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 20:46:34,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:34,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:34,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash 727229, now seen corresponding path program 1 times [2022-11-02 20:46:34,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:34,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479718618] [2022-11-02 20:46:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:34,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:34,463 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 20:46:34,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:34,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479718618] [2022-11-02 20:46:34,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479718618] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:34,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176173455] [2022-11-02 20:46:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:34,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:34,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:34,471 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:34,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:46:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:34,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:46:34,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:34,563 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 20:46:34,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:46:34,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176173455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:34,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:46:34,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-02 20:46:34,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387655600] [2022-11-02 20:46:34,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:34,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:46:34,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:34,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:46:34,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:46:34,566 INFO L87 Difference]: Start difference. First operand 70 states and 167 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:34,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:34,665 INFO L93 Difference]: Finished difference Result 123 states and 295 transitions. [2022-11-02 20:46:34,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:46:34,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 20:46:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:34,667 INFO L225 Difference]: With dead ends: 123 [2022-11-02 20:46:34,668 INFO L226 Difference]: Without dead ends: 123 [2022-11-02 20:46:34,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:46:34,669 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:34,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:46:34,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-02 20:46:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 68. [2022-11-02 20:46:34,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 2.7413793103448274) internal successors, (159), 67 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 159 transitions. [2022-11-02 20:46:34,678 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 159 transitions. Word has length 3 [2022-11-02 20:46:34,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:34,678 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 159 transitions. [2022-11-02 20:46:34,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:34,679 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 159 transitions. [2022-11-02 20:46:34,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:46:34,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:34,680 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-02 20:46:34,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:34,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:34,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:34,908 INFO L85 PathProgramCache]: Analyzing trace with hash 190750667, now seen corresponding path program 2 times [2022-11-02 20:46:34,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:34,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324058164] [2022-11-02 20:46:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:34,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,049 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 20:46:35,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:35,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324058164] [2022-11-02 20:46:35,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324058164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:35,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617229196] [2022-11-02 20:46:35,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:46:35,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:35,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:35,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:35,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:46:35,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:46:35,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:46:35,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:46:35,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:35,164 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 20:46:35,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:46:35,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617229196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:35,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:46:35,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-02 20:46:35,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521711430] [2022-11-02 20:46:35,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:35,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:35,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:35,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:35,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:46:35,168 INFO L87 Difference]: Start difference. First operand 68 states and 159 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 20:46:35,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:35,217 INFO L93 Difference]: Finished difference Result 67 states and 158 transitions. [2022-11-02 20:46:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:35,218 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 20:46:35,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:35,219 INFO L225 Difference]: With dead ends: 67 [2022-11-02 20:46:35,219 INFO L226 Difference]: Without dead ends: 67 [2022-11-02 20:46:35,220 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 20:46:35,221 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:35,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:46:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-02 20:46:35,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2022-11-02 20:46:35,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 2.7777777777777777) internal successors, (150), 62 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 150 transitions. [2022-11-02 20:46:35,227 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 150 transitions. Word has length 6 [2022-11-02 20:46:35,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:35,228 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 150 transitions. [2022-11-02 20:46:35,228 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 20:46:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 150 transitions. [2022-11-02 20:46:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:46:35,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:35,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:46:35,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:35,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-02 20:46:35,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:35,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash 208008420, now seen corresponding path program 1 times [2022-11-02 20:46:35,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:35,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520851555] [2022-11-02 20:46:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:35,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,506 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 20:46:35,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:35,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520851555] [2022-11-02 20:46:35,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520851555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:35,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:35,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:46:35,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789369674] [2022-11-02 20:46:35,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:35,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:35,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:35,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:35,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:35,509 INFO L87 Difference]: Start difference. First operand 63 states and 150 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:35,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:35,567 INFO L93 Difference]: Finished difference Result 97 states and 237 transitions. [2022-11-02 20:46:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:35,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 20:46:35,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:35,568 INFO L225 Difference]: With dead ends: 97 [2022-11-02 20:46:35,569 INFO L226 Difference]: Without dead ends: 97 [2022-11-02 20:46:35,569 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 20:46:35,570 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:35,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:46:35,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-02 20:46:35,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 83. [2022-11-02 20:46:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 74 states have (on average 2.891891891891892) internal successors, (214), 82 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 214 transitions. [2022-11-02 20:46:35,577 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 214 transitions. Word has length 6 [2022-11-02 20:46:35,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:35,577 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 214 transitions. [2022-11-02 20:46:35,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:35,578 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 214 transitions. [2022-11-02 20:46:35,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:46:35,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:35,578 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1] [2022-11-02 20:46:35,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:46:35,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:35,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:35,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2126983511, now seen corresponding path program 1 times [2022-11-02 20:46:35,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:35,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310252618] [2022-11-02 20:46:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:35,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,688 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 20:46:35,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:35,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310252618] [2022-11-02 20:46:35,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310252618] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:35,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097652338] [2022-11-02 20:46:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:35,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:35,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:35,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:35,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:46:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:35,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:46:35,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:35,807 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 20:46:35,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:35,874 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 20:46:35,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097652338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:35,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:35,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-02 20:46:35,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425942704] [2022-11-02 20:46:35,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:35,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:46:35,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:46:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:46:35,880 INFO L87 Difference]: Start difference. First operand 83 states and 214 transitions. Second operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:36,277 INFO L93 Difference]: Finished difference Result 849 states and 2246 transitions. [2022-11-02 20:46:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:46:36,278 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:46:36,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:36,284 INFO L225 Difference]: With dead ends: 849 [2022-11-02 20:46:36,284 INFO L226 Difference]: Without dead ends: 849 [2022-11-02 20:46:36,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:46:36,285 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 323 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:36,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 0 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:46:36,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-02 20:46:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 89. [2022-11-02 20:46:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 80 states have (on average 2.825) internal successors, (226), 88 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 226 transitions. [2022-11-02 20:46:36,299 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 226 transitions. Word has length 7 [2022-11-02 20:46:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:36,299 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 226 transitions. [2022-11-02 20:46:36,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,300 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 226 transitions. [2022-11-02 20:46:36,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:46:36,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:36,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:36,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:36,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:36,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:36,515 INFO L85 PathProgramCache]: Analyzing trace with hash -2141532698, now seen corresponding path program 1 times [2022-11-02 20:46:36,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:36,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192616795] [2022-11-02 20:46:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:36,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:36,584 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 20:46:36,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:36,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192616795] [2022-11-02 20:46:36,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192616795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:36,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:36,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:46:36,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659223586] [2022-11-02 20:46:36,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:36,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:36,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:36,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:36,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:36,587 INFO L87 Difference]: Start difference. First operand 89 states and 226 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:36,644 INFO L93 Difference]: Finished difference Result 117 states and 301 transitions. [2022-11-02 20:46:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:36,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:46:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:36,645 INFO L225 Difference]: With dead ends: 117 [2022-11-02 20:46:36,646 INFO L226 Difference]: Without dead ends: 117 [2022-11-02 20:46:36,646 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 20:46:36,647 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:36,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:46:36,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-02 20:46:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2022-11-02 20:46:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 96 states have (on average 2.9479166666666665) internal successors, (283), 104 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 283 transitions. [2022-11-02 20:46:36,654 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 283 transitions. Word has length 7 [2022-11-02 20:46:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:36,655 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 283 transitions. [2022-11-02 20:46:36,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 283 transitions. [2022-11-02 20:46:36,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:46:36,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:36,656 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:36,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:46:36,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:36,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:36,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1967330103, now seen corresponding path program 1 times [2022-11-02 20:46:36,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:36,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036101035] [2022-11-02 20:46:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:36,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:36,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:36,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036101035] [2022-11-02 20:46:36,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036101035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:36,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:36,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:46:36,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736300376] [2022-11-02 20:46:36,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:36,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:46:36,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:36,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:46:36,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:46:36,758 INFO L87 Difference]: Start difference. First operand 105 states and 283 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:36,860 INFO L93 Difference]: Finished difference Result 168 states and 404 transitions. [2022-11-02 20:46:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:46:36,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:46:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:36,862 INFO L225 Difference]: With dead ends: 168 [2022-11-02 20:46:36,862 INFO L226 Difference]: Without dead ends: 164 [2022-11-02 20:46:36,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:46:36,863 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:36,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:46:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-02 20:46:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 136. [2022-11-02 20:46:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 127 states have (on average 2.7401574803149606) internal successors, (348), 135 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 348 transitions. [2022-11-02 20:46:36,871 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 348 transitions. Word has length 8 [2022-11-02 20:46:36,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:36,871 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 348 transitions. [2022-11-02 20:46:36,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,872 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 348 transitions. [2022-11-02 20:46:36,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:46:36,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:36,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:36,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:46:36,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:36,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1963002421, now seen corresponding path program 1 times [2022-11-02 20:46:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:36,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388214056] [2022-11-02 20:46:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:36,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:36,921 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 20:46:36,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:36,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388214056] [2022-11-02 20:46:36,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388214056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:36,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:36,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:46:36,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355321919] [2022-11-02 20:46:36,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:36,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:46:36,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:36,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:46:36,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:46:36,923 INFO L87 Difference]: Start difference. First operand 136 states and 348 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:36,960 INFO L93 Difference]: Finished difference Result 118 states and 294 transitions. [2022-11-02 20:46:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:36,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:46:36,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:36,962 INFO L225 Difference]: With dead ends: 118 [2022-11-02 20:46:36,962 INFO L226 Difference]: Without dead ends: 101 [2022-11-02 20:46:36,963 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 20:46:36,963 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:36,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:46:36,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-02 20:46:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-02 20:46:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 2.6526315789473682) internal successors, (252), 100 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 252 transitions. [2022-11-02 20:46:36,969 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 252 transitions. Word has length 8 [2022-11-02 20:46:36,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:36,969 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 252 transitions. [2022-11-02 20:46:36,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 252 transitions. [2022-11-02 20:46:36,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:46:36,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:36,970 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:36,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:46:36,970 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:36,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:36,971 INFO L85 PathProgramCache]: Analyzing trace with hash -183025350, now seen corresponding path program 1 times [2022-11-02 20:46:36,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:36,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876358171] [2022-11-02 20:46:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:36,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:46:37,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:37,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876358171] [2022-11-02 20:46:37,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876358171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:37,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:37,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:46:37,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754598521] [2022-11-02 20:46:37,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:37,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:46:37,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:37,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:46:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:46:37,112 INFO L87 Difference]: Start difference. First operand 101 states and 252 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:37,209 INFO L93 Difference]: Finished difference Result 134 states and 311 transitions. [2022-11-02 20:46:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:46:37,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:46:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:37,210 INFO L225 Difference]: With dead ends: 134 [2022-11-02 20:46:37,210 INFO L226 Difference]: Without dead ends: 115 [2022-11-02 20:46:37,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:46:37,211 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:37,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:46:37,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-02 20:46:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2022-11-02 20:46:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 2.642105263157895) internal successors, (251), 100 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 251 transitions. [2022-11-02 20:46:37,217 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 251 transitions. Word has length 9 [2022-11-02 20:46:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:37,217 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 251 transitions. [2022-11-02 20:46:37,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 251 transitions. [2022-11-02 20:46:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:46:37,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:37,218 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:37,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:46:37,218 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash -603140823, now seen corresponding path program 1 times [2022-11-02 20:46:37,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:37,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791642226] [2022-11-02 20:46:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:37,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:46:37,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:37,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791642226] [2022-11-02 20:46:37,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791642226] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:37,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380206699] [2022-11-02 20:46:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:37,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:37,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:37,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:37,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:46:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:37,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:46:37,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:37,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:37,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380206699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:37,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:37,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2022-11-02 20:46:37,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640034772] [2022-11-02 20:46:37,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:37,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:46:37,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:37,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:46:37,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:46:37,559 INFO L87 Difference]: Start difference. First operand 101 states and 251 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:37,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:37,838 INFO L93 Difference]: Finished difference Result 150 states and 354 transitions. [2022-11-02 20:46:37,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:46:37,839 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 20:46:37,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:37,840 INFO L225 Difference]: With dead ends: 150 [2022-11-02 20:46:37,840 INFO L226 Difference]: Without dead ends: 105 [2022-11-02 20:46:37,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:46:37,841 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:37,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:46:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-02 20:46:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2022-11-02 20:46:37,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 2.574712643678161) internal successors, (224), 90 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 224 transitions. [2022-11-02 20:46:37,845 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 224 transitions. Word has length 10 [2022-11-02 20:46:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:37,845 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 224 transitions. [2022-11-02 20:46:37,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 224 transitions. [2022-11-02 20:46:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:46:37,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:37,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:37,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:38,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:38,055 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:38,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:38,055 INFO L85 PathProgramCache]: Analyzing trace with hash -741818597, now seen corresponding path program 1 times [2022-11-02 20:46:38,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:38,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406262845] [2022-11-02 20:46:38,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:38,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:46:38,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:38,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406262845] [2022-11-02 20:46:38,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406262845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:38,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370130798] [2022-11-02 20:46:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:38,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:38,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:38,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:38,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:46:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:38,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:46:38,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:46:38,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:46:38,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370130798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:38,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:38,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 11 [2022-11-02 20:46:38,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613201486] [2022-11-02 20:46:38,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:38,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:46:38,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:38,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:46:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:46:38,447 INFO L87 Difference]: Start difference. First operand 91 states and 224 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:38,749 INFO L93 Difference]: Finished difference Result 198 states and 467 transitions. [2022-11-02 20:46:38,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:46:38,750 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 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 20:46:38,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:38,751 INFO L225 Difference]: With dead ends: 198 [2022-11-02 20:46:38,751 INFO L226 Difference]: Without dead ends: 153 [2022-11-02 20:46:38,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:46:38,751 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 89 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:38,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 0 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:46:38,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-02 20:46:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 112. [2022-11-02 20:46:38,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 2.7222222222222223) internal successors, (294), 111 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 294 transitions. [2022-11-02 20:46:38,756 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 294 transitions. Word has length 11 [2022-11-02 20:46:38,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:38,756 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 294 transitions. [2022-11-02 20:46:38,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 294 transitions. [2022-11-02 20:46:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:46:38,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:38,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:38,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:38,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:46:38,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:38,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:38,979 INFO L85 PathProgramCache]: Analyzing trace with hash 970150413, now seen corresponding path program 1 times [2022-11-02 20:46:38,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:38,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121100109] [2022-11-02 20:46:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:38,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:46:39,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:39,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121100109] [2022-11-02 20:46:39,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121100109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:39,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295629311] [2022-11-02 20:46:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:39,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:39,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:39,075 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:39,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:46:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:39,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:46:39,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:46:39,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:46:39,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295629311] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:39,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:39,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-02 20:46:39,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618316535] [2022-11-02 20:46:39,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:39,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:46:39,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:46:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:46:39,249 INFO L87 Difference]: Start difference. First operand 112 states and 294 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:39,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:39,352 INFO L93 Difference]: Finished difference Result 222 states and 582 transitions. [2022-11-02 20:46:39,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:46:39,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:46:39,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:39,355 INFO L225 Difference]: With dead ends: 222 [2022-11-02 20:46:39,356 INFO L226 Difference]: Without dead ends: 222 [2022-11-02 20:46:39,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 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 20:46:39,357 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:39,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:46:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-02 20:46:39,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 166. [2022-11-02 20:46:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 3.074074074074074) internal successors, (498), 165 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 498 transitions. [2022-11-02 20:46:39,367 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 498 transitions. Word has length 12 [2022-11-02 20:46:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:39,367 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 498 transitions. [2022-11-02 20:46:39,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:39,368 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 498 transitions. [2022-11-02 20:46:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:46:39,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:39,369 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1] [2022-11-02 20:46:39,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:39,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:46:39,595 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:39,595 INFO L85 PathProgramCache]: Analyzing trace with hash -372729783, now seen corresponding path program 2 times [2022-11-02 20:46:39,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:39,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130960422] [2022-11-02 20:46:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:39,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:39,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:39,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130960422] [2022-11-02 20:46:39,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130960422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:39,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275653333] [2022-11-02 20:46:39,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:46:39,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:39,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:39,952 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:39,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:46:40,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:46:40,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:46:40,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:46:40,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-02 20:46:40,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:46:40,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275653333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:40,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:46:40,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-11-02 20:46:40,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470615935] [2022-11-02 20:46:40,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:40,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:46:40,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:40,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:46:40,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:46:40,100 INFO L87 Difference]: Start difference. First operand 166 states and 498 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:40,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:40,150 INFO L93 Difference]: Finished difference Result 147 states and 442 transitions. [2022-11-02 20:46:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:46:40,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:46:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:40,152 INFO L225 Difference]: With dead ends: 147 [2022-11-02 20:46:40,152 INFO L226 Difference]: Without dead ends: 114 [2022-11-02 20:46:40,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:46:40,153 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:40,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:46:40,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-02 20:46:40,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 50. [2022-11-02 20:46:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 108 transitions. [2022-11-02 20:46:40,157 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 108 transitions. Word has length 13 [2022-11-02 20:46:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:40,157 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 108 transitions. [2022-11-02 20:46:40,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 108 transitions. [2022-11-02 20:46:40,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:46:40,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:40,163 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:46:40,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-02 20:46:40,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:40,387 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-02 20:46:40,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash 442747823, now seen corresponding path program 2 times [2022-11-02 20:46:40,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:40,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183150779] [2022-11-02 20:46:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:40,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:46:40,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:40,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183150779] [2022-11-02 20:46:40,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183150779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:40,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022637187] [2022-11-02 20:46:40,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:46:40,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:40,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:40,620 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:40,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:46:40,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:46:40,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:46:40,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:46:40,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:46:40,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:46:40,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022637187] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:40,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:40,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2022-11-02 20:46:40,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411097247] [2022-11-02 20:46:40,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:40,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:46:40,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:40,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:46:40,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:46:40,843 INFO L87 Difference]: Start difference. First operand 50 states and 108 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:41,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:41,064 INFO L93 Difference]: Finished difference Result 79 states and 165 transitions. [2022-11-02 20:46:41,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:46:41,065 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 20:46:41,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:41,065 INFO L225 Difference]: With dead ends: 79 [2022-11-02 20:46:41,066 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 20:46:41,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:46:41,067 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:41,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:46:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 20:46:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 20:46:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:46:41,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-11-02 20:46:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:41,068 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:46:41,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:46:41,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 20:46:41,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2022-11-02 20:46:41,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-11-02 20:46:41,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-11-02 20:46:41,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-11-02 20:46:41,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-11-02 20:46:41,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-11-02 20:46:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-11-02 20:46:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2022-11-02 20:46:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2022-11-02 20:46:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-11-02 20:46:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-11-02 20:46:41,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-11-02 20:46:41,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-11-02 20:46:41,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-11-02 20:46:41,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:41,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:46:41,277 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:41,284 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:46:41,284 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:46:41,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:46:41 BasicIcfg [2022-11-02 20:46:41,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:46:41,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:46:41,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:46:41,288 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:46:41,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:46:24" (3/4) ... [2022-11-02 20:46:41,292 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:46:41,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 20:46:41,300 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 20:46:41,308 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-02 20:46:41,309 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:46:41,309 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:46:41,309 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:46:41,371 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:46:41,371 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:46:41,372 INFO L158 Benchmark]: Toolchain (without parser) took 18390.17ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 77.2MB in the beginning and 90.5MB in the end (delta: -13.3MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-11-02 20:46:41,372 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:46:41,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.98ms. Allocated memory is still 121.6MB. Free memory was 77.0MB in the beginning and 93.7MB in the end (delta: -16.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:46:41,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.34ms. Allocated memory is still 121.6MB. Free memory was 93.7MB in the beginning and 92.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:46:41,374 INFO L158 Benchmark]: Boogie Preprocessor took 72.14ms. Allocated memory is still 121.6MB. Free memory was 92.0MB in the beginning and 90.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:46:41,375 INFO L158 Benchmark]: RCFGBuilder took 728.43ms. Allocated memory is still 121.6MB. Free memory was 90.4MB in the beginning and 72.7MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-02 20:46:41,376 INFO L158 Benchmark]: TraceAbstraction took 16932.29ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 71.9MB in the beginning and 93.5MB in the end (delta: -21.6MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-11-02 20:46:41,376 INFO L158 Benchmark]: Witness Printer took 83.13ms. Allocated memory is still 146.8MB. Free memory was 93.5MB in the beginning and 90.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:46:41,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 485.98ms. Allocated memory is still 121.6MB. Free memory was 77.0MB in the beginning and 93.7MB in the end (delta: -16.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.34ms. Allocated memory is still 121.6MB. Free memory was 93.7MB in the beginning and 92.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.14ms. Allocated memory is still 121.6MB. Free memory was 92.0MB in the beginning and 90.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 728.43ms. Allocated memory is still 121.6MB. Free memory was 90.4MB in the beginning and 72.7MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 16932.29ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 71.9MB in the beginning and 93.5MB in the end (delta: -21.6MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Witness Printer took 83.13ms. Allocated memory is still 146.8MB. Free memory was 93.5MB in the beginning and 90.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.0s, 181 PlacesBefore, 31 PlacesAfterwards, 189 TransitionsBefore, 29 TransitionsAfterwards, 1400 CoEnabledTransitionPairs, 7 FixpointIterations, 127 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 28 TrivialYvCompositions, 8 ConcurrentYvCompositions, 10 ChoiceCompositions, 218 TotalNumberOfCompositions, 1984 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1571, positive: 1507, positive conditional: 0, positive unconditional: 1507, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1038, positive: 1024, positive conditional: 0, positive unconditional: 1024, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1038, positive: 1024, positive conditional: 0, positive unconditional: 1024, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 46, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1571, positive: 483, positive conditional: 0, positive unconditional: 483, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 1038, unknown conditional: 0, unknown unconditional: 1038] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 213 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 16.7s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1017 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1017 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 574 mSDsCounter, 146 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1330 IncrementalHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 146 mSolverCounterUnsat, 0 mSDtfsCounter, 1330 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 198 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=13, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 1337 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 198 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 225 ConstructedInterpolants, 0 QuantifiedInterpolants, 840 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1305 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 30 InterpolantComputations, 9 PerfectInterpolantSequences, 138/258 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:46:41,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_226f7cd0-9e80-40de-9357-8e9346049939/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE