./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longer-2.i --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_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/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_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/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_f47e9300-2a06-4eb4-91b7-c5ec93382800/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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- 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 21:04:05,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:04:05,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:04:05,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:04:05,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:04:05,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:04:05,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:04:05,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:04:05,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:04:05,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:04:05,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:04:05,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:04:05,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:04:05,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:04:05,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:04:05,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:04:05,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:04:05,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:04:05,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:04:05,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:04:05,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:04:05,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:04:05,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:04:05,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:04:05,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:04:05,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:04:05,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:04:05,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:04:05,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:04:05,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:04:05,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:04:05,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:04:05,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:04:05,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:04:05,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:04:05,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:04:05,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:04:05,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:04:05,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:04:05,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:04:05,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:04:05,519 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 21:04:05,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:04:05,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:04:05,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:04:05,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:04:05,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:04:05,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:04:05,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:04:05,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:04:05,550 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:04:05,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:04:05,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:04:05,551 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:04:05,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:04:05,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:04:05,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:04:05,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:04:05,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:04:05,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:04:05,553 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 21:04:05,553 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:04:05,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:04:05,553 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:04:05,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:04:05,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:04:05,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:04:05,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:04:05,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:05,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:04:05,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:04:05,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:04:05,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:04:05,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:04:05,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:04:05,556 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_f47e9300-2a06-4eb4-91b7-c5ec93382800/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2022-11-02 21:04:05,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:04:05,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:04:05,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:04:05,920 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:04:05,921 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:04:05,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/stack_longer-2.i [2022-11-02 21:04:06,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/data/e125b84a4/1be5c50459184551803f75b6741362a5/FLAG2dbbb5f34 [2022-11-02 21:04:06,783 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:04:06,784 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/sv-benchmarks/c/pthread/stack_longer-2.i [2022-11-02 21:04:06,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/data/e125b84a4/1be5c50459184551803f75b6741362a5/FLAG2dbbb5f34 [2022-11-02 21:04:07,029 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/data/e125b84a4/1be5c50459184551803f75b6741362a5 [2022-11-02 21:04:07,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:04:07,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:04:07,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:07,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:04:07,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:04:07,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87b450a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07, skipping insertion in model container [2022-11-02 21:04:07,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:04:07,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:04:07,625 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_f47e9300-2a06-4eb4-91b7-c5ec93382800/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2022-11-02 21:04:07,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:07,667 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:04:07,738 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_f47e9300-2a06-4eb4-91b7-c5ec93382800/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2022-11-02 21:04:07,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:07,818 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:04:07,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07 WrapperNode [2022-11-02 21:04:07,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:07,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:07,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:04:07,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:04:07,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,925 INFO L138 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 158 [2022-11-02 21:04:07,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:07,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:04:07,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:04:07,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:04:07,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:04:07,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:04:07,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:04:07,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:04:07,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (1/1) ... [2022-11-02 21:04:07,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:08,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:08,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:04:08,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:04:08,078 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-02 21:04:08,079 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-02 21:04:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-02 21:04:08,079 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-02 21:04:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:04:08,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:04:08,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:04:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:04:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 21:04:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:04:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:04:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:04:08,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:04:08,086 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 21:04:08,312 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:04:08,315 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:04:08,676 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:04:08,686 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:04:08,686 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 21:04:08,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:08 BoogieIcfgContainer [2022-11-02 21:04:08,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:04:08,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:04:08,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:04:08,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:04:08,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:04:07" (1/3) ... [2022-11-02 21:04:08,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789cf237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:08, skipping insertion in model container [2022-11-02 21:04:08,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:07" (2/3) ... [2022-11-02 21:04:08,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789cf237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:08, skipping insertion in model container [2022-11-02 21:04:08,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:08" (3/3) ... [2022-11-02 21:04:08,710 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2022-11-02 21:04:08,720 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:04:08,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:04:08,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-02 21:04:08,732 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:04:08,847 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 21:04:08,889 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:04:08,907 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 186 transitions, 388 flow [2022-11-02 21:04:08,910 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 186 transitions, 388 flow [2022-11-02 21:04:08,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 186 transitions, 388 flow [2022-11-02 21:04:09,100 INFO L130 PetriNetUnfolder]: 10/184 cut-off events. [2022-11-02 21:04:09,100 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:04:09,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 10/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 473 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-11-02 21:04:09,133 INFO L118 LiptonReduction]: Number of co-enabled transitions 10242 [2022-11-02 21:04:16,272 INFO L133 LiptonReduction]: Checked pairs total: 15233 [2022-11-02 21:04:16,272 INFO L135 LiptonReduction]: Total number of compositions: 175 [2022-11-02 21:04:16,283 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 45 transitions, 106 flow [2022-11-02 21:04:16,339 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 536 states, 512 states have (on average 2.740234375) internal successors, (1403), 535 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:16,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:04:16,369 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;@34a79693, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:04:16,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-02 21:04:16,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 536 states, 512 states have (on average 2.740234375) internal successors, (1403), 535 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:04:16,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:16,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:16,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:16,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:16,388 INFO L85 PathProgramCache]: Analyzing trace with hash -569273681, now seen corresponding path program 1 times [2022-11-02 21:04:16,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:16,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109827733] [2022-11-02 21:04:16,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:16,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:16,783 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 21:04:16,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:16,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109827733] [2022-11-02 21:04:16,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109827733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:16,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:16,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584733871] [2022-11-02 21:04:16,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:16,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:16,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:16,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:16,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:16,842 INFO L87 Difference]: Start difference. First operand has 536 states, 512 states have (on average 2.740234375) internal successors, (1403), 535 states have internal predecessors, (1403), 0 states have call successors, (0), 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, 3 states have (on average 2.3333333333333335) 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 21:04:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:17,036 INFO L93 Difference]: Finished difference Result 768 states and 1932 transitions. [2022-11-02 21:04:17,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:17,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) 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 21:04:17,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:17,064 INFO L225 Difference]: With dead ends: 768 [2022-11-02 21:04:17,064 INFO L226 Difference]: Without dead ends: 768 [2022-11-02 21:04:17,065 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 21:04:17,069 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 23 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:17,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:17,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-02 21:04:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 730. [2022-11-02 21:04:17,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 706 states have (on average 2.698300283286119) internal successors, (1905), 729 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:17,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1905 transitions. [2022-11-02 21:04:17,202 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1905 transitions. Word has length 7 [2022-11-02 21:04:17,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:17,202 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 1905 transitions. [2022-11-02 21:04:17,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) 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 21:04:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1905 transitions. [2022-11-02 21:04:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:04:17,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:17,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:17,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:04:17,208 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:17,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash -172144094, now seen corresponding path program 1 times [2022-11-02 21:04:17,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:17,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284276754] [2022-11-02 21:04:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:17,368 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 21:04:17,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:17,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284276754] [2022-11-02 21:04:17,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284276754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:17,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:17,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316749793] [2022-11-02 21:04:17,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:17,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:17,373 INFO L87 Difference]: Start difference. First operand 730 states and 1905 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:17,524 INFO L93 Difference]: Finished difference Result 1206 states and 3151 transitions. [2022-11-02 21:04:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 21:04:17,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:17,535 INFO L225 Difference]: With dead ends: 1206 [2022-11-02 21:04:17,535 INFO L226 Difference]: Without dead ends: 1206 [2022-11-02 21:04:17,536 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 21:04:17,537 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 29 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:17,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:17,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-11-02 21:04:17,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1150. [2022-11-02 21:04:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1126 states have (on average 2.72202486678508) internal successors, (3065), 1149 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:17,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3065 transitions. [2022-11-02 21:04:17,597 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3065 transitions. Word has length 9 [2022-11-02 21:04:17,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:17,597 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 3065 transitions. [2022-11-02 21:04:17,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:17,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3065 transitions. [2022-11-02 21:04:17,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:04:17,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:17,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:17,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:04:17,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:17,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:17,602 INFO L85 PathProgramCache]: Analyzing trace with hash -622490366, now seen corresponding path program 1 times [2022-11-02 21:04:17,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:17,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982038017] [2022-11-02 21:04:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:17,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:17,792 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 21:04:17,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:17,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982038017] [2022-11-02 21:04:17,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982038017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:17,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:17,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:17,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859233565] [2022-11-02 21:04:17,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:17,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:17,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:17,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:17,798 INFO L87 Difference]: Start difference. First operand 1150 states and 3065 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:17,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:17,971 INFO L93 Difference]: Finished difference Result 1384 states and 3677 transitions. [2022-11-02 21:04:17,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:17,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:04:17,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:17,982 INFO L225 Difference]: With dead ends: 1384 [2022-11-02 21:04:17,982 INFO L226 Difference]: Without dead ends: 1384 [2022-11-02 21:04:17,983 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 21:04:17,984 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:17,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-02 21:04:18,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-11-02 21:04:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1360 states have (on average 2.7036764705882352) internal successors, (3677), 1383 states have internal predecessors, (3677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:18,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 3677 transitions. [2022-11-02 21:04:18,087 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 3677 transitions. Word has length 11 [2022-11-02 21:04:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:18,087 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 3677 transitions. [2022-11-02 21:04:18,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:18,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 3677 transitions. [2022-11-02 21:04:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:04:18,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:18,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:18,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:04:18,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:18,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:18,094 INFO L85 PathProgramCache]: Analyzing trace with hash -396045679, now seen corresponding path program 1 times [2022-11-02 21:04:18,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:18,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277031692] [2022-11-02 21:04:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:18,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:18,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:18,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277031692] [2022-11-02 21:04:18,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277031692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:18,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898536238] [2022-11-02 21:04:18,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:18,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:18,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:18,222 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:18,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:04:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:18,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:18,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:18,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:18,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898536238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:18,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:04:18,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 21:04:18,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862120084] [2022-11-02 21:04:18,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:18,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:18,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:18,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:18,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:18,515 INFO L87 Difference]: Start difference. First operand 1384 states and 3677 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:18,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:18,772 INFO L93 Difference]: Finished difference Result 1384 states and 3594 transitions. [2022-11-02 21:04:18,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:18,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:04:18,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:18,793 INFO L225 Difference]: With dead ends: 1384 [2022-11-02 21:04:18,793 INFO L226 Difference]: Without dead ends: 1384 [2022-11-02 21:04:18,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 21:04:18,795 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 62 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:18,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:18,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-02 21:04:18,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1320. [2022-11-02 21:04:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1301 states have (on average 2.687163720215219) internal successors, (3496), 1319 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:18,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 3496 transitions. [2022-11-02 21:04:18,860 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 3496 transitions. Word has length 13 [2022-11-02 21:04:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:18,861 INFO L495 AbstractCegarLoop]: Abstraction has 1320 states and 3496 transitions. [2022-11-02 21:04:18,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 3496 transitions. [2022-11-02 21:04:18,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:04:18,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:18,868 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:18,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:19,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:19,085 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:19,085 INFO L85 PathProgramCache]: Analyzing trace with hash -396045722, now seen corresponding path program 1 times [2022-11-02 21:04:19,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:19,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2249091] [2022-11-02 21:04:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:19,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:19,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2249091] [2022-11-02 21:04:19,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2249091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:19,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:19,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:19,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205290596] [2022-11-02 21:04:19,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:19,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:19,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:19,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:19,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:19,175 INFO L87 Difference]: Start difference. First operand 1320 states and 3496 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:19,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:19,307 INFO L93 Difference]: Finished difference Result 1256 states and 3315 transitions. [2022-11-02 21:04:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:19,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 21:04:19,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:19,316 INFO L225 Difference]: With dead ends: 1256 [2022-11-02 21:04:19,316 INFO L226 Difference]: Without dead ends: 1220 [2022-11-02 21:04:19,316 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 21:04:19,320 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 29 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:19,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:19,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-11-02 21:04:19,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 802. [2022-11-02 21:04:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 788 states have (on average 2.6104060913705585) internal successors, (2057), 801 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:19,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2057 transitions. [2022-11-02 21:04:19,403 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2057 transitions. Word has length 13 [2022-11-02 21:04:19,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:19,403 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 2057 transitions. [2022-11-02 21:04:19,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2057 transitions. [2022-11-02 21:04:19,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:04:19,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:19,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:19,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:04:19,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:19,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1456452304, now seen corresponding path program 1 times [2022-11-02 21:04:19,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:19,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405520812] [2022-11-02 21:04:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:19,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:19,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:19,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405520812] [2022-11-02 21:04:19,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405520812] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:19,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373726678] [2022-11-02 21:04:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:19,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:19,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:19,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:19,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:04:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:19,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:19,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:19,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:19,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373726678] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:19,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:19,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-02 21:04:19,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82643905] [2022-11-02 21:04:19,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:19,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:04:19,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:19,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:04:19,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:04:19,885 INFO L87 Difference]: Start difference. First operand 802 states and 2057 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:20,506 INFO L93 Difference]: Finished difference Result 1804 states and 4592 transitions. [2022-11-02 21:04:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:04:20,508 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-02 21:04:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:20,520 INFO L225 Difference]: With dead ends: 1804 [2022-11-02 21:04:20,521 INFO L226 Difference]: Without dead ends: 1788 [2022-11-02 21:04:20,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:20,525 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 200 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:20,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 16 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:04:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2022-11-02 21:04:20,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1550. [2022-11-02 21:04:20,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1536 states have (on average 2.7135416666666665) internal successors, (4168), 1549 states have internal predecessors, (4168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 4168 transitions. [2022-11-02 21:04:20,623 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 4168 transitions. Word has length 15 [2022-11-02 21:04:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:20,624 INFO L495 AbstractCegarLoop]: Abstraction has 1550 states and 4168 transitions. [2022-11-02 21:04:20,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 4168 transitions. [2022-11-02 21:04:20,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:04:20,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:20,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:20,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:20,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 21:04:20,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:20,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1340923433, now seen corresponding path program 1 times [2022-11-02 21:04:20,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:20,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485412442] [2022-11-02 21:04:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:20,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:20,937 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 21:04:20,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:20,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485412442] [2022-11-02 21:04:20,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485412442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:20,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:20,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:20,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654750616] [2022-11-02 21:04:20,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:20,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:20,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:20,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:20,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:20,940 INFO L87 Difference]: Start difference. First operand 1550 states and 4168 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:21,051 INFO L93 Difference]: Finished difference Result 844 states and 2086 transitions. [2022-11-02 21:04:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:21,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 21:04:21,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:21,058 INFO L225 Difference]: With dead ends: 844 [2022-11-02 21:04:21,058 INFO L226 Difference]: Without dead ends: 844 [2022-11-02 21:04:21,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 21:04:21,060 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 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 21:04:21,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 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 21:04:21,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-11-02 21:04:21,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 802. [2022-11-02 21:04:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 790 states have (on average 2.4658227848101264) internal successors, (1948), 801 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1948 transitions. [2022-11-02 21:04:21,094 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1948 transitions. Word has length 16 [2022-11-02 21:04:21,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:21,094 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1948 transitions. [2022-11-02 21:04:21,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,095 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1948 transitions. [2022-11-02 21:04:21,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:04:21,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:21,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:21,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:04:21,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:21,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:21,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2094092976, now seen corresponding path program 1 times [2022-11-02 21:04:21,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:21,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935191281] [2022-11-02 21:04:21,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:21,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:21,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:21,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935191281] [2022-11-02 21:04:21,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935191281] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:21,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012978210] [2022-11-02 21:04:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:21,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:21,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:21,202 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:21,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:04:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:21,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:21,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:21,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012978210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:21,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:04:21,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 21:04:21,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022965941] [2022-11-02 21:04:21,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:21,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:04:21,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:21,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:04:21,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:21,391 INFO L87 Difference]: Start difference. First operand 802 states and 1948 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:21,602 INFO L93 Difference]: Finished difference Result 904 states and 2163 transitions. [2022-11-02 21:04:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:04:21,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 21:04:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:21,607 INFO L225 Difference]: With dead ends: 904 [2022-11-02 21:04:21,608 INFO L226 Difference]: Without dead ends: 900 [2022-11-02 21:04:21,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:04:21,609 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 46 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:21,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 4 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-11-02 21:04:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 872. [2022-11-02 21:04:21,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 862 states have (on average 2.437354988399072) internal successors, (2101), 871 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2101 transitions. [2022-11-02 21:04:21,640 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2101 transitions. Word has length 16 [2022-11-02 21:04:21,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:21,641 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 2101 transitions. [2022-11-02 21:04:21,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:21,641 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2101 transitions. [2022-11-02 21:04:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:04:21,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:21,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:04:21,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:21,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:21,869 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:21,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:21,869 INFO L85 PathProgramCache]: Analyzing trace with hash 724639491, now seen corresponding path program 1 times [2022-11-02 21:04:21,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:21,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134799964] [2022-11-02 21:04:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:21,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:21,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:21,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134799964] [2022-11-02 21:04:21,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134799964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:21,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:21,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:21,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782542156] [2022-11-02 21:04:21,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:21,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:21,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:21,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:21,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:21,979 INFO L87 Difference]: Start difference. First operand 872 states and 2101 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:22,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:22,083 INFO L93 Difference]: Finished difference Result 806 states and 1906 transitions. [2022-11-02 21:04:22,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:22,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:04:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:22,089 INFO L225 Difference]: With dead ends: 806 [2022-11-02 21:04:22,089 INFO L226 Difference]: Without dead ends: 806 [2022-11-02 21:04:22,090 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 21:04:22,093 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:22,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:22,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-11-02 21:04:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2022-11-02 21:04:22,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 799 states have (on average 2.3854818523153942) internal successors, (1906), 805 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1906 transitions. [2022-11-02 21:04:22,124 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1906 transitions. Word has length 19 [2022-11-02 21:04:22,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:22,124 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1906 transitions. [2022-11-02 21:04:22,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1906 transitions. [2022-11-02 21:04:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:04:22,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:22,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:04:22,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:04:22,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:22,128 INFO L85 PathProgramCache]: Analyzing trace with hash 724639567, now seen corresponding path program 1 times [2022-11-02 21:04:22,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:22,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776103970] [2022-11-02 21:04:22,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:22,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:22,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:22,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776103970] [2022-11-02 21:04:22,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776103970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:22,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715748645] [2022-11-02 21:04:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:22,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:22,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:22,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:22,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:04:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:22,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:22,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:22,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:22,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715748645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:22,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:04:22,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 21:04:22,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806736704] [2022-11-02 21:04:22,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:22,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:22,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:22,458 INFO L87 Difference]: Start difference. First operand 806 states and 1906 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:22,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:22,592 INFO L93 Difference]: Finished difference Result 740 states and 1711 transitions. [2022-11-02 21:04:22,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:22,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-02 21:04:22,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:22,597 INFO L225 Difference]: With dead ends: 740 [2022-11-02 21:04:22,597 INFO L226 Difference]: Without dead ends: 738 [2022-11-02 21:04:22,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 21:04:22,598 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 41 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:22,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 6 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-11-02 21:04:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 700. [2022-11-02 21:04:22,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 696 states have (on average 2.3060344827586206) internal successors, (1605), 699 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1605 transitions. [2022-11-02 21:04:22,623 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1605 transitions. Word has length 19 [2022-11-02 21:04:22,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:22,625 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1605 transitions. [2022-11-02 21:04:22,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:22,626 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1605 transitions. [2022-11-02 21:04:22,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 21:04:22,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:22,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:22,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:22,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:22,852 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:22,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:22,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1817122061, now seen corresponding path program 1 times [2022-11-02 21:04:22,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:22,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076230602] [2022-11-02 21:04:22,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:22,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:23,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:23,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076230602] [2022-11-02 21:04:23,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076230602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:23,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:23,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:23,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422838551] [2022-11-02 21:04:23,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:23,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:23,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:23,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:23,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:23,010 INFO L87 Difference]: Start difference. First operand 700 states and 1605 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:23,162 INFO L93 Difference]: Finished difference Result 882 states and 2044 transitions. [2022-11-02 21:04:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:23,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-02 21:04:23,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:23,167 INFO L225 Difference]: With dead ends: 882 [2022-11-02 21:04:23,167 INFO L226 Difference]: Without dead ends: 810 [2022-11-02 21:04:23,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:23,168 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 28 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:23,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-11-02 21:04:23,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 696. [2022-11-02 21:04:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 692 states have (on average 2.28757225433526) internal successors, (1583), 695 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1583 transitions. [2022-11-02 21:04:23,191 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1583 transitions. Word has length 26 [2022-11-02 21:04:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:23,191 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 1583 transitions. [2022-11-02 21:04:23,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1583 transitions. [2022-11-02 21:04:23,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:04:23,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:23,193 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:23,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:04:23,194 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:23,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:23,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1676797043, now seen corresponding path program 1 times [2022-11-02 21:04:23,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:23,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437460376] [2022-11-02 21:04:23,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:23,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:23,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:23,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437460376] [2022-11-02 21:04:23,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437460376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:23,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:23,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:04:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299449711] [2022-11-02 21:04:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:23,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:23,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:23,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:23,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:23,307 INFO L87 Difference]: Start difference. First operand 696 states and 1583 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 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 21:04:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:23,378 INFO L93 Difference]: Finished difference Result 690 states and 1552 transitions. [2022-11-02 21:04:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:23,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 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 27 [2022-11-02 21:04:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:23,382 INFO L225 Difference]: With dead ends: 690 [2022-11-02 21:04:23,383 INFO L226 Difference]: Without dead ends: 690 [2022-11-02 21:04:23,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:04:23,383 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:23,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-02 21:04:23,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 632. [2022-11-02 21:04:23,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 629 states have (on average 2.3227344992050876) internal successors, (1461), 631 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1461 transitions. [2022-11-02 21:04:23,403 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1461 transitions. Word has length 27 [2022-11-02 21:04:23,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:23,403 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1461 transitions. [2022-11-02 21:04:23,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 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 21:04:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1461 transitions. [2022-11-02 21:04:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:04:23,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:23,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:23,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:04:23,405 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:23,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1676797042, now seen corresponding path program 1 times [2022-11-02 21:04:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:23,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359604315] [2022-11-02 21:04:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:23,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:23,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:23,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359604315] [2022-11-02 21:04:23,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359604315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:23,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704618074] [2022-11-02 21:04:23,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:23,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:23,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:23,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:23,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:04:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:23,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:04:23,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:23,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:23,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704618074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:23,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:04:23,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2022-11-02 21:04:23,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271312029] [2022-11-02 21:04:23,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:23,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:04:23,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:23,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:04:23,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:04:23,767 INFO L87 Difference]: Start difference. First operand 632 states and 1461 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 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 21:04:23,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:23,967 INFO L93 Difference]: Finished difference Result 714 states and 1653 transitions. [2022-11-02 21:04:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:23,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 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 27 [2022-11-02 21:04:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:23,972 INFO L225 Difference]: With dead ends: 714 [2022-11-02 21:04:23,972 INFO L226 Difference]: Without dead ends: 688 [2022-11-02 21:04:23,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:04:23,973 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 48 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:23,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-02 21:04:23,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 604. [2022-11-02 21:04:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 602 states have (on average 2.335548172757475) internal successors, (1406), 603 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1406 transitions. [2022-11-02 21:04:23,996 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1406 transitions. Word has length 27 [2022-11-02 21:04:23,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:23,997 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 1406 transitions. [2022-11-02 21:04:23,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 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 21:04:23,997 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1406 transitions. [2022-11-02 21:04:23,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 21:04:23,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:23,999 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-02 21:04:24,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-02 21:04:24,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:24,213 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:24,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:24,213 INFO L85 PathProgramCache]: Analyzing trace with hash -384478993, now seen corresponding path program 1 times [2022-11-02 21:04:24,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:24,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105851798] [2022-11-02 21:04:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:24,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:24,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:24,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105851798] [2022-11-02 21:04:24,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105851798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:24,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466779293] [2022-11-02 21:04:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:24,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:24,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:24,430 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:24,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:04:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:24,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:04:24,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:24,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:24,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466779293] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:24,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:24,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-02 21:04:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72859846] [2022-11-02 21:04:24,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:24,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:04:24,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:24,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:04:24,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:04:24,803 INFO L87 Difference]: Start difference. First operand 604 states and 1406 transitions. Second operand has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:25,374 INFO L93 Difference]: Finished difference Result 1336 states and 3086 transitions. [2022-11-02 21:04:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 21:04:25,375 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 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 32 [2022-11-02 21:04:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:25,382 INFO L225 Difference]: With dead ends: 1336 [2022-11-02 21:04:25,382 INFO L226 Difference]: Without dead ends: 1336 [2022-11-02 21:04:25,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:04:25,383 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 267 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:25,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 5 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:04:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2022-11-02 21:04:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1104. [2022-11-02 21:04:25,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 1102 states have (on average 2.3448275862068964) internal successors, (2584), 1103 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 2584 transitions. [2022-11-02 21:04:25,427 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 2584 transitions. Word has length 32 [2022-11-02 21:04:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:25,428 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 2584 transitions. [2022-11-02 21:04:25,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.294117647058823) internal successors, (73), 17 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:25,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 2584 transitions. [2022-11-02 21:04:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 21:04:25,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:25,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:25,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:25,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 21:04:25,656 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1638823213, now seen corresponding path program 2 times [2022-11-02 21:04:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:25,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862916665] [2022-11-02 21:04:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 21:04:25,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:25,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862916665] [2022-11-02 21:04:25,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862916665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:25,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432614082] [2022-11-02 21:04:25,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:25,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:25,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:25,957 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:25,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:04:26,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:04:26,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:26,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:04:26,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:04:26,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:04:26,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432614082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:26,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:26,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2022-11-02 21:04:26,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663996139] [2022-11-02 21:04:26,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:26,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:04:26,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:04:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:04:26,341 INFO L87 Difference]: Start difference. First operand 1104 states and 2584 transitions. Second operand has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:26,742 INFO L93 Difference]: Finished difference Result 1510 states and 3490 transitions. [2022-11-02 21:04:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:04:26,743 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 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 35 [2022-11-02 21:04:26,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:26,751 INFO L225 Difference]: With dead ends: 1510 [2022-11-02 21:04:26,751 INFO L226 Difference]: Without dead ends: 1510 [2022-11-02 21:04:26,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:04:26,755 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 99 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:26,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 6 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:04:26,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2022-11-02 21:04:26,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1344. [2022-11-02 21:04:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1342 states have (on average 2.343517138599106) internal successors, (3145), 1343 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 3145 transitions. [2022-11-02 21:04:26,801 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 3145 transitions. Word has length 35 [2022-11-02 21:04:26,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:26,803 INFO L495 AbstractCegarLoop]: Abstraction has 1344 states and 3145 transitions. [2022-11-02 21:04:26,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:26,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 3145 transitions. [2022-11-02 21:04:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 21:04:26,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:26,807 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:26,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:27,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 21:04:27,032 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:27,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:27,033 INFO L85 PathProgramCache]: Analyzing trace with hash -257133717, now seen corresponding path program 3 times [2022-11-02 21:04:27,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:27,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065255802] [2022-11-02 21:04:27,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:27,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:04:27,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:27,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065255802] [2022-11-02 21:04:27,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065255802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:27,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155801482] [2022-11-02 21:04:27,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:04:27,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:27,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:27,617 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:27,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:04:27,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-02 21:04:27,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:28,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:04:28,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:28,185 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:04:28,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:04:28,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155801482] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:28,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:28,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-11-02 21:04:28,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573429007] [2022-11-02 21:04:28,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:28,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:04:28,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:28,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:04:28,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:04:28,408 INFO L87 Difference]: Start difference. First operand 1344 states and 3145 transitions. Second operand has 21 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:29,262 INFO L93 Difference]: Finished difference Result 2050 states and 4738 transitions. [2022-11-02 21:04:29,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 21:04:29,262 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 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 51 [2022-11-02 21:04:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:29,274 INFO L225 Difference]: With dead ends: 2050 [2022-11-02 21:04:29,275 INFO L226 Difference]: Without dead ends: 2050 [2022-11-02 21:04:29,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 21:04:29,276 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 298 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:29,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 8 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:04:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2022-11-02 21:04:29,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1248. [2022-11-02 21:04:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1246 states have (on average 2.3434991974317816) internal successors, (2920), 1247 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 2920 transitions. [2022-11-02 21:04:29,359 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 2920 transitions. Word has length 51 [2022-11-02 21:04:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:29,359 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 2920 transitions. [2022-11-02 21:04:29,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:29,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 2920 transitions. [2022-11-02 21:04:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 21:04:29,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:29,363 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1] [2022-11-02 21:04:29,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:29,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 21:04:29,589 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:29,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:29,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1446209173, now seen corresponding path program 2 times [2022-11-02 21:04:29,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:29,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256478637] [2022-11-02 21:04:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:29,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:30,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256478637] [2022-11-02 21:04:30,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256478637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:30,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589105719] [2022-11-02 21:04:30,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:30,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:30,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:30,349 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:30,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:04:30,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:04:30,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:30,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:04:30,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:30,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:31,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589105719] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:31,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:31,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-11-02 21:04:31,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133904158] [2022-11-02 21:04:31,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:31,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 21:04:31,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:31,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 21:04:31,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:04:31,275 INFO L87 Difference]: Start difference. First operand 1248 states and 2920 transitions. Second operand has 34 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:32,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:32,581 INFO L93 Difference]: Finished difference Result 3172 states and 7333 transitions. [2022-11-02 21:04:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 21:04:32,583 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 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 64 [2022-11-02 21:04:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:32,610 INFO L225 Difference]: With dead ends: 3172 [2022-11-02 21:04:32,610 INFO L226 Difference]: Without dead ends: 3172 [2022-11-02 21:04:32,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=737, Invalid=1713, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 21:04:32,612 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 630 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:32,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 6 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:04:32,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2022-11-02 21:04:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 2652. [2022-11-02 21:04:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2650 states have (on average 2.3573584905660376) internal successors, (6247), 2651 states have internal predecessors, (6247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 6247 transitions. [2022-11-02 21:04:32,771 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 6247 transitions. Word has length 64 [2022-11-02 21:04:32,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:32,771 INFO L495 AbstractCegarLoop]: Abstraction has 2652 states and 6247 transitions. [2022-11-02 21:04:32,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 6247 transitions. [2022-11-02 21:04:32,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 21:04:32,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:32,780 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:32,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:33,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 21:04:33,008 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:33,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1944520279, now seen corresponding path program 4 times [2022-11-02 21:04:33,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:33,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155290515] [2022-11-02 21:04:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:33,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:04:33,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:33,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155290515] [2022-11-02 21:04:33,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155290515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:33,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045603041] [2022-11-02 21:04:33,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:04:33,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:33,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:33,667 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:33,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 21:04:33,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:04:33,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:33,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:04:33,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:04:34,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:04:34,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045603041] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:34,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:34,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2022-11-02 21:04:34,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436887364] [2022-11-02 21:04:34,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:34,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 21:04:34,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 21:04:34,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2022-11-02 21:04:34,310 INFO L87 Difference]: Start difference. First operand 2652 states and 6247 transitions. Second operand has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:35,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:35,377 INFO L93 Difference]: Finished difference Result 3832 states and 8873 transitions. [2022-11-02 21:04:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 21:04:35,378 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 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 67 [2022-11-02 21:04:35,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:35,397 INFO L225 Difference]: With dead ends: 3832 [2022-11-02 21:04:35,397 INFO L226 Difference]: Without dead ends: 3832 [2022-11-02 21:04:35,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 21:04:35,399 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 394 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:35,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 10 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:04:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2022-11-02 21:04:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 2812. [2022-11-02 21:04:35,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2810 states have (on average 2.3619217081850534) internal successors, (6637), 2811 states have internal predecessors, (6637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 6637 transitions. [2022-11-02 21:04:35,491 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 6637 transitions. Word has length 67 [2022-11-02 21:04:35,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:35,491 INFO L495 AbstractCegarLoop]: Abstraction has 2812 states and 6637 transitions. [2022-11-02 21:04:35,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 28 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 6637 transitions. [2022-11-02 21:04:35,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 21:04:35,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:35,496 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:35,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:35,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 21:04:35,721 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1356423668, now seen corresponding path program 1 times [2022-11-02 21:04:35,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:35,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770775417] [2022-11-02 21:04:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:35,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 21:04:36,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:36,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770775417] [2022-11-02 21:04:36,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770775417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:36,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20872069] [2022-11-02 21:04:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:36,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:36,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:36,502 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:36,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 21:04:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:36,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:04:36,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:04:36,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:04:37,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20872069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:37,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:37,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 26 [2022-11-02 21:04:37,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853145423] [2022-11-02 21:04:37,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:37,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 21:04:37,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:37,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 21:04:37,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:04:37,185 INFO L87 Difference]: Start difference. First operand 2812 states and 6637 transitions. Second operand has 28 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:38,040 INFO L93 Difference]: Finished difference Result 5136 states and 11885 transitions. [2022-11-02 21:04:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:04:38,041 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 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 76 [2022-11-02 21:04:38,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:38,057 INFO L225 Difference]: With dead ends: 5136 [2022-11-02 21:04:38,058 INFO L226 Difference]: Without dead ends: 5136 [2022-11-02 21:04:38,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=442, Invalid=1538, Unknown=0, NotChecked=0, Total=1980 [2022-11-02 21:04:38,059 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 437 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:38,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 9 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:04:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5136 states. [2022-11-02 21:04:38,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5136 to 3346. [2022-11-02 21:04:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3346 states, 3344 states have (on average 2.367224880382775) internal successors, (7916), 3345 states have internal predecessors, (7916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 7916 transitions. [2022-11-02 21:04:38,177 INFO L78 Accepts]: Start accepts. Automaton has 3346 states and 7916 transitions. Word has length 76 [2022-11-02 21:04:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:38,177 INFO L495 AbstractCegarLoop]: Abstraction has 3346 states and 7916 transitions. [2022-11-02 21:04:38,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3346 states and 7916 transitions. [2022-11-02 21:04:38,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-02 21:04:38,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:38,185 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:38,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:38,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:38,400 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:38,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash 721325605, now seen corresponding path program 5 times [2022-11-02 21:04:38,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:38,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090437296] [2022-11-02 21:04:38,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:38,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:04:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:39,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090437296] [2022-11-02 21:04:39,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090437296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:39,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592406050] [2022-11-02 21:04:39,693 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:04:39,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:39,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:39,695 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:39,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 21:04:40,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-02 21:04:40,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:40,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:04:40,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:04:40,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:04:41,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592406050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:41,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:41,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 43 [2022-11-02 21:04:41,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658662063] [2022-11-02 21:04:41,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-02 21:04:41,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:41,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-02 21:04:41,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1497, Unknown=0, NotChecked=0, Total=1980 [2022-11-02 21:04:41,445 INFO L87 Difference]: Start difference. First operand 3346 states and 7916 transitions. Second operand has 45 states, 44 states have (on average 4.454545454545454) internal successors, (196), 44 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:43,344 INFO L93 Difference]: Finished difference Result 7594 states and 17498 transitions. [2022-11-02 21:04:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-02 21:04:43,344 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 4.454545454545454) internal successors, (196), 44 states have internal predecessors, (196), 0 states have call successors, (0), 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 99 [2022-11-02 21:04:43,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:43,370 INFO L225 Difference]: With dead ends: 7594 [2022-11-02 21:04:43,370 INFO L226 Difference]: Without dead ends: 7594 [2022-11-02 21:04:43,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1658 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1523, Invalid=5119, Unknown=0, NotChecked=0, Total=6642 [2022-11-02 21:04:43,373 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 802 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:43,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 7 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:04:43,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2022-11-02 21:04:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 3942. [2022-11-02 21:04:43,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3940 states have (on average 2.3573604060913707) internal successors, (9288), 3941 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 9288 transitions. [2022-11-02 21:04:43,530 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 9288 transitions. Word has length 99 [2022-11-02 21:04:43,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:43,531 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 9288 transitions. [2022-11-02 21:04:43,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 4.454545454545454) internal successors, (196), 44 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 9288 transitions. [2022-11-02 21:04:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-02 21:04:43,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:43,546 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:43,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:43,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:43,772 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash -815818963, now seen corresponding path program 2 times [2022-11-02 21:04:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:43,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689671327] [2022-11-02 21:04:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:43,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:04:45,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689671327] [2022-11-02 21:04:45,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689671327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094293614] [2022-11-02 21:04:45,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:45,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:45,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:45,065 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:45,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 21:04:45,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:04:45,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:45,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:04:45,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:04:45,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:04:46,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094293614] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:46,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:46,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 38 [2022-11-02 21:04:46,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676111848] [2022-11-02 21:04:46,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:46,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-02 21:04:46,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:46,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-02 21:04:46,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 21:04:46,203 INFO L87 Difference]: Start difference. First operand 3942 states and 9288 transitions. Second operand has 40 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:47,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:47,748 INFO L93 Difference]: Finished difference Result 8490 states and 19698 transitions. [2022-11-02 21:04:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-02 21:04:47,749 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 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 100 [2022-11-02 21:04:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:47,776 INFO L225 Difference]: With dead ends: 8490 [2022-11-02 21:04:47,776 INFO L226 Difference]: Without dead ends: 8490 [2022-11-02 21:04:47,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1017, Invalid=3539, Unknown=0, NotChecked=0, Total=4556 [2022-11-02 21:04:47,780 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 838 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:47,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 9 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:04:47,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8490 states. [2022-11-02 21:04:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8490 to 4714. [2022-11-02 21:04:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4714 states, 4712 states have (on average 2.390916808149406) internal successors, (11266), 4713 states have internal predecessors, (11266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4714 states to 4714 states and 11266 transitions. [2022-11-02 21:04:47,948 INFO L78 Accepts]: Start accepts. Automaton has 4714 states and 11266 transitions. Word has length 100 [2022-11-02 21:04:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:47,950 INFO L495 AbstractCegarLoop]: Abstraction has 4714 states and 11266 transitions. [2022-11-02 21:04:47,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.717948717948718) internal successors, (184), 39 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4714 states and 11266 transitions. [2022-11-02 21:04:47,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-02 21:04:47,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:47,962 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:48,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:48,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:48,177 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:48,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:48,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1945287981, now seen corresponding path program 3 times [2022-11-02 21:04:48,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:48,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014117187] [2022-11-02 21:04:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:48,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:04:49,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:49,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014117187] [2022-11-02 21:04:49,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014117187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:49,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901771290] [2022-11-02 21:04:49,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:04:49,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:49,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:49,425 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:49,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 21:04:50,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-02 21:04:50,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:50,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:04:50,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:04:50,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:04:50,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901771290] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:50,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:50,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 33 [2022-11-02 21:04:50,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807022744] [2022-11-02 21:04:50,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:50,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-02 21:04:50,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:50,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-02 21:04:50,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 21:04:50,706 INFO L87 Difference]: Start difference. First operand 4714 states and 11266 transitions. Second operand has 35 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:51,975 INFO L93 Difference]: Finished difference Result 12576 states and 29459 transitions. [2022-11-02 21:04:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 21:04:51,975 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 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 101 [2022-11-02 21:04:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:52,020 INFO L225 Difference]: With dead ends: 12576 [2022-11-02 21:04:52,020 INFO L226 Difference]: Without dead ends: 12576 [2022-11-02 21:04:52,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=678, Invalid=2628, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 21:04:52,022 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 478 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:52,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 10 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:04:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12576 states. [2022-11-02 21:04:52,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12576 to 7852. [2022-11-02 21:04:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7852 states, 7850 states have (on average 2.449808917197452) internal successors, (19231), 7851 states have internal predecessors, (19231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7852 states to 7852 states and 19231 transitions. [2022-11-02 21:04:52,374 INFO L78 Accepts]: Start accepts. Automaton has 7852 states and 19231 transitions. Word has length 101 [2022-11-02 21:04:52,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:52,375 INFO L495 AbstractCegarLoop]: Abstraction has 7852 states and 19231 transitions. [2022-11-02 21:04:52,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 34 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7852 states and 19231 transitions. [2022-11-02 21:04:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 21:04:52,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:52,397 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:52,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:52,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:52,614 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:52,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:52,615 INFO L85 PathProgramCache]: Analyzing trace with hash 872887630, now seen corresponding path program 4 times [2022-11-02 21:04:52,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:52,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239857693] [2022-11-02 21:04:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:52,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:04:54,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:54,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239857693] [2022-11-02 21:04:54,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239857693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:54,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297679573] [2022-11-02 21:04:54,178 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:04:54,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:54,180 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:54,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 21:04:54,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:04:54,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:54,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 21:04:54,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:04:54,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:04:55,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297679573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:55,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:55,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2022-11-02 21:04:55,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065026848] [2022-11-02 21:04:55,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:55,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 21:04:55,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:55,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 21:04:55,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=2047, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 21:04:55,653 INFO L87 Difference]: Start difference. First operand 7852 states and 19231 transitions. Second operand has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:58,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:58,072 INFO L93 Difference]: Finished difference Result 18946 states and 45296 transitions. [2022-11-02 21:04:58,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-02 21:04:58,073 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 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 124 [2022-11-02 21:04:58,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:58,140 INFO L225 Difference]: With dead ends: 18946 [2022-11-02 21:04:58,140 INFO L226 Difference]: Without dead ends: 18946 [2022-11-02 21:04:58,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2164 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1856, Invalid=6516, Unknown=0, NotChecked=0, Total=8372 [2022-11-02 21:04:58,143 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1044 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:58,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 10 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:04:58,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18946 states. [2022-11-02 21:04:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18946 to 9356. [2022-11-02 21:04:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9356 states, 9354 states have (on average 2.460017104981826) internal successors, (23011), 9355 states have internal predecessors, (23011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9356 states to 9356 states and 23011 transitions. [2022-11-02 21:04:58,513 INFO L78 Accepts]: Start accepts. Automaton has 9356 states and 23011 transitions. Word has length 124 [2022-11-02 21:04:58,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:58,514 INFO L495 AbstractCegarLoop]: Abstraction has 9356 states and 23011 transitions. [2022-11-02 21:04:58,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:58,515 INFO L276 IsEmpty]: Start isEmpty. Operand 9356 states and 23011 transitions. [2022-11-02 21:04:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 21:04:58,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:58,542 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:58,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:58,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-02 21:04:58,764 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:04:58,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:58,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2068847302, now seen corresponding path program 5 times [2022-11-02 21:04:58,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:58,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402581760] [2022-11-02 21:04:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:58,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:00,498 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 21:05:00,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:00,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402581760] [2022-11-02 21:05:00,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402581760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:00,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583131044] [2022-11-02 21:05:00,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:05:00,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:00,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:00,501 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:00,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 21:05:01,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-11-02 21:05:01,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:01,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 21:05:01,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:05:01,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:05:02,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583131044] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:02,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:05:02,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 23, 23] total 50 [2022-11-02 21:05:02,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593393389] [2022-11-02 21:05:02,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:02,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 21:05:02,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:02,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 21:05:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=2040, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 21:05:02,633 INFO L87 Difference]: Start difference. First operand 9356 states and 23011 transitions. Second operand has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:04,843 INFO L93 Difference]: Finished difference Result 20674 states and 49232 transitions. [2022-11-02 21:05:04,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-02 21:05:04,845 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 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 124 [2022-11-02 21:05:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:04,909 INFO L225 Difference]: With dead ends: 20674 [2022-11-02 21:05:04,909 INFO L226 Difference]: Without dead ends: 20674 [2022-11-02 21:05:04,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1780, Invalid=6052, Unknown=0, NotChecked=0, Total=7832 [2022-11-02 21:05:04,912 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1209 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:04,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 11 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:05:04,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20674 states. [2022-11-02 21:05:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20674 to 12254. [2022-11-02 21:05:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12254 states, 12252 states have (on average 2.4995102840352597) internal successors, (30624), 12253 states have internal predecessors, (30624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12254 states to 12254 states and 30624 transitions. [2022-11-02 21:05:05,342 INFO L78 Accepts]: Start accepts. Automaton has 12254 states and 30624 transitions. Word has length 124 [2022-11-02 21:05:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:05,343 INFO L495 AbstractCegarLoop]: Abstraction has 12254 states and 30624 transitions. [2022-11-02 21:05:05,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.549019607843137) internal successors, (232), 51 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 12254 states and 30624 transitions. [2022-11-02 21:05:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-02 21:05:05,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:05,372 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:05,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:05,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-02 21:05:05,597 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:05:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:05,597 INFO L85 PathProgramCache]: Analyzing trace with hash -568788110, now seen corresponding path program 6 times [2022-11-02 21:05:05,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:05,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947587713] [2022-11-02 21:05:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:05,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 790 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:05:07,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:07,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947587713] [2022-11-02 21:05:07,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947587713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:07,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495621121] [2022-11-02 21:05:07,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:05:07,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:07,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:07,796 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:07,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 21:05:14,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-02 21:05:14,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:14,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 21:05:14,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 790 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:05:14,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 0 proven. 790 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 21:05:15,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495621121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:15,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:05:15,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 27] total 58 [2022-11-02 21:05:15,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080383169] [2022-11-02 21:05:15,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:15,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-02 21:05:15,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:15,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-02 21:05:15,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=2731, Unknown=0, NotChecked=0, Total=3540 [2022-11-02 21:05:15,461 INFO L87 Difference]: Start difference. First operand 12254 states and 30624 transitions. Second operand has 60 states, 59 states have (on average 4.47457627118644) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:18,225 INFO L93 Difference]: Finished difference Result 26466 states and 63624 transitions. [2022-11-02 21:05:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-02 21:05:18,225 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 4.47457627118644) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 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 140 [2022-11-02 21:05:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:18,311 INFO L225 Difference]: With dead ends: 26466 [2022-11-02 21:05:18,311 INFO L226 Difference]: Without dead ends: 26466 [2022-11-02 21:05:18,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3275 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2641, Invalid=9569, Unknown=0, NotChecked=0, Total=12210 [2022-11-02 21:05:18,315 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1171 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:18,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 9 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:05:18,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26466 states. [2022-11-02 21:05:18,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26466 to 15586. [2022-11-02 21:05:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15586 states, 15584 states have (on average 2.4960215605749485) internal successors, (38898), 15585 states have internal predecessors, (38898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15586 states to 15586 states and 38898 transitions. [2022-11-02 21:05:18,874 INFO L78 Accepts]: Start accepts. Automaton has 15586 states and 38898 transitions. Word has length 140 [2022-11-02 21:05:18,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:18,875 INFO L495 AbstractCegarLoop]: Abstraction has 15586 states and 38898 transitions. [2022-11-02 21:05:18,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 4.47457627118644) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:18,876 INFO L276 IsEmpty]: Start isEmpty. Operand 15586 states and 38898 transitions. [2022-11-02 21:05:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 21:05:18,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:18,925 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:18,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:19,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-02 21:05:19,145 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:05:19,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:19,145 INFO L85 PathProgramCache]: Analyzing trace with hash 96966668, now seen corresponding path program 7 times [2022-11-02 21:05:19,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:19,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095065073] [2022-11-02 21:05:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:19,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:21,155 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:05:21,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:21,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095065073] [2022-11-02 21:05:21,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095065073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:21,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301465408] [2022-11-02 21:05:21,156 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 21:05:21,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:21,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:21,157 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:21,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 21:05:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:21,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 21:05:21,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:05:21,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:05:22,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301465408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:22,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:05:22,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 21] total 48 [2022-11-02 21:05:22,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165915526] [2022-11-02 21:05:22,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:22,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 21:05:22,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:22,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 21:05:22,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=1956, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 21:05:22,515 INFO L87 Difference]: Start difference. First operand 15586 states and 38898 transitions. Second operand has 50 states, 49 states have (on average 4.8979591836734695) internal successors, (240), 49 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:24,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:24,308 INFO L93 Difference]: Finished difference Result 44724 states and 109799 transitions. [2022-11-02 21:05:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-02 21:05:24,309 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 4.8979591836734695) internal successors, (240), 49 states have internal predecessors, (240), 0 states have call successors, (0), 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 142 [2022-11-02 21:05:24,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:24,418 INFO L225 Difference]: With dead ends: 44724 [2022-11-02 21:05:24,418 INFO L226 Difference]: Without dead ends: 44724 [2022-11-02 21:05:24,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1959 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1413, Invalid=5559, Unknown=0, NotChecked=0, Total=6972 [2022-11-02 21:05:24,420 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 697 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:24,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 15 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:05:24,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44724 states. [2022-11-02 21:05:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44724 to 19040. [2022-11-02 21:05:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19040 states, 19038 states have (on average 2.5165983821830022) internal successors, (47911), 19039 states have internal predecessors, (47911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:25,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19040 states to 19040 states and 47911 transitions. [2022-11-02 21:05:25,100 INFO L78 Accepts]: Start accepts. Automaton has 19040 states and 47911 transitions. Word has length 142 [2022-11-02 21:05:25,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:25,101 INFO L495 AbstractCegarLoop]: Abstraction has 19040 states and 47911 transitions. [2022-11-02 21:05:25,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 4.8979591836734695) internal successors, (240), 49 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:25,101 INFO L276 IsEmpty]: Start isEmpty. Operand 19040 states and 47911 transitions. [2022-11-02 21:05:25,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-02 21:05:25,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:25,208 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:25,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:25,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-02 21:05:25,423 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:05:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1522934437, now seen corresponding path program 8 times [2022-11-02 21:05:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:25,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004442675] [2022-11-02 21:05:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:25,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:05:27,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:27,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004442675] [2022-11-02 21:05:27,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004442675] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:27,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716061325] [2022-11-02 21:05:27,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:05:27,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:27,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:27,658 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:27,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 21:05:28,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:05:28,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:28,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 21:05:28,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:05:28,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:05:29,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716061325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:29,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:05:29,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30, 30] total 65 [2022-11-02 21:05:29,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138785642] [2022-11-02 21:05:29,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:29,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-02 21:05:29,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:29,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-02 21:05:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=979, Invalid=3443, Unknown=0, NotChecked=0, Total=4422 [2022-11-02 21:05:29,642 INFO L87 Difference]: Start difference. First operand 19040 states and 47911 transitions. Second operand has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:32,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:32,627 INFO L93 Difference]: Finished difference Result 51578 states and 126074 transitions. [2022-11-02 21:05:32,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-02 21:05:32,628 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 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 165 [2022-11-02 21:05:32,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:32,766 INFO L225 Difference]: With dead ends: 51578 [2022-11-02 21:05:32,766 INFO L226 Difference]: Without dead ends: 51578 [2022-11-02 21:05:32,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3507 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2888, Invalid=10222, Unknown=0, NotChecked=0, Total=13110 [2022-11-02 21:05:32,768 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1243 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:32,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 10 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 21:05:32,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51578 states. [2022-11-02 21:05:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51578 to 21700. [2022-11-02 21:05:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21700 states, 21698 states have (on average 2.528389713337635) internal successors, (54861), 21699 states have internal predecessors, (54861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21700 states to 21700 states and 54861 transitions. [2022-11-02 21:05:33,689 INFO L78 Accepts]: Start accepts. Automaton has 21700 states and 54861 transitions. Word has length 165 [2022-11-02 21:05:33,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:33,690 INFO L495 AbstractCegarLoop]: Abstraction has 21700 states and 54861 transitions. [2022-11-02 21:05:33,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:33,690 INFO L276 IsEmpty]: Start isEmpty. Operand 21700 states and 54861 transitions. [2022-11-02 21:05:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-02 21:05:33,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:33,723 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:33,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:33,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-02 21:05:33,948 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:05:33,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:33,949 INFO L85 PathProgramCache]: Analyzing trace with hash -2127975251, now seen corresponding path program 9 times [2022-11-02 21:05:33,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:33,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485998512] [2022-11-02 21:05:33,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:33,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1047 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:05:36,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:36,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485998512] [2022-11-02 21:05:36,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485998512] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:36,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908894439] [2022-11-02 21:05:36,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:05:36,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:36,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:36,144 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:36,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 21:05:48,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-11-02 21:05:48,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:48,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 21:05:48,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:05:48,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:05:49,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908894439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:49,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:05:49,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 30, 30] total 65 [2022-11-02 21:05:49,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931463302] [2022-11-02 21:05:49,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:49,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-02 21:05:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-02 21:05:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=972, Invalid=3450, Unknown=0, NotChecked=0, Total=4422 [2022-11-02 21:05:49,710 INFO L87 Difference]: Start difference. First operand 21700 states and 54861 transitions. Second operand has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:52,679 INFO L93 Difference]: Finished difference Result 65738 states and 161304 transitions. [2022-11-02 21:05:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-02 21:05:52,679 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 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 165 [2022-11-02 21:05:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:52,825 INFO L225 Difference]: With dead ends: 65738 [2022-11-02 21:05:52,825 INFO L226 Difference]: Without dead ends: 65738 [2022-11-02 21:05:52,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4014 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3098, Invalid=11664, Unknown=0, NotChecked=0, Total=14762 [2022-11-02 21:05:52,828 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1508 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:52,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 8 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:05:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65738 states. [2022-11-02 21:05:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65738 to 34900. [2022-11-02 21:05:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34900 states, 34898 states have (on average 2.5583414522322196) internal successors, (89281), 34899 states have internal predecessors, (89281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:53,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34900 states to 34900 states and 89281 transitions. [2022-11-02 21:05:53,879 INFO L78 Accepts]: Start accepts. Automaton has 34900 states and 89281 transitions. Word has length 165 [2022-11-02 21:05:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:53,880 INFO L495 AbstractCegarLoop]: Abstraction has 34900 states and 89281 transitions. [2022-11-02 21:05:53,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 4.545454545454546) internal successors, (300), 66 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 34900 states and 89281 transitions. [2022-11-02 21:05:54,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-02 21:05:54,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:54,144 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:54,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:54,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-02 21:05:54,364 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:05:54,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1975724488, now seen corresponding path program 10 times [2022-11-02 21:05:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:54,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744174241] [2022-11-02 21:05:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:54,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:05:56,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:56,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744174241] [2022-11-02 21:05:56,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744174241] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:56,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963449838] [2022-11-02 21:05:56,848 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:05:56,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:56,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:56,857 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:56,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-02 21:05:57,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:05:57,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:57,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 21:05:57,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:05:57,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:05:58,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963449838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:58,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:05:58,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 26, 26] total 59 [2022-11-02 21:05:58,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909169228] [2022-11-02 21:05:58,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:58,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-02 21:05:58,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:58,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-02 21:05:58,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=722, Invalid=2938, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 21:05:58,611 INFO L87 Difference]: Start difference. First operand 34900 states and 89281 transitions. Second operand has 61 states, 60 states have (on average 4.866666666666666) internal successors, (292), 60 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:01,537 INFO L93 Difference]: Finished difference Result 104428 states and 262749 transitions. [2022-11-02 21:06:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-02 21:06:01,537 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 4.866666666666666) internal successors, (292), 60 states have internal predecessors, (292), 0 states have call successors, (0), 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 175 [2022-11-02 21:06:01,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:01,933 INFO L225 Difference]: With dead ends: 104428 [2022-11-02 21:06:01,933 INFO L226 Difference]: Without dead ends: 104428 [2022-11-02 21:06:01,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3099 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2111, Invalid=8601, Unknown=0, NotChecked=0, Total=10712 [2022-11-02 21:06:01,948 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1029 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:01,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 10 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:06:02,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104428 states. [2022-11-02 21:06:03,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104428 to 54332. [2022-11-02 21:06:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54332 states, 54330 states have (on average 2.563942573163998) internal successors, (139299), 54331 states have internal predecessors, (139299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:03,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54332 states to 54332 states and 139299 transitions. [2022-11-02 21:06:03,754 INFO L78 Accepts]: Start accepts. Automaton has 54332 states and 139299 transitions. Word has length 175 [2022-11-02 21:06:03,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:03,754 INFO L495 AbstractCegarLoop]: Abstraction has 54332 states and 139299 transitions. [2022-11-02 21:06:03,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 4.866666666666666) internal successors, (292), 60 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:03,754 INFO L276 IsEmpty]: Start isEmpty. Operand 54332 states and 139299 transitions. [2022-11-02 21:06:04,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-02 21:06:04,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:04,064 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:04,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:04,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:06:04,265 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:06:04,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:04,265 INFO L85 PathProgramCache]: Analyzing trace with hash -970921086, now seen corresponding path program 11 times [2022-11-02 21:06:04,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:04,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100703582] [2022-11-02 21:06:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 0 proven. 1464 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:06:06,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:06,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100703582] [2022-11-02 21:06:06,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100703582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:06:06,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089431512] [2022-11-02 21:06:06,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:06:06,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:06:06,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:06:06,693 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:06:06,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-02 21:06:15,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-11-02 21:06:15,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:06:15,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-02 21:06:15,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 0 proven. 1464 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:06:15,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 0 proven. 1464 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:06:16,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089431512] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:16,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:06:16,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 36, 36] total 77 [2022-11-02 21:06:16,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204060384] [2022-11-02 21:06:16,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:16,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-11-02 21:06:16,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:16,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-11-02 21:06:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1362, Invalid=4800, Unknown=0, NotChecked=0, Total=6162 [2022-11-02 21:06:16,753 INFO L87 Difference]: Start difference. First operand 54332 states and 139299 transitions. Second operand has 79 states, 78 states have (on average 4.461538461538462) internal successors, (348), 78 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 21:06:21,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:21,191 INFO L93 Difference]: Finished difference Result 173234 states and 433964 transitions. [2022-11-02 21:06:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-11-02 21:06:21,191 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 4.461538461538462) internal successors, (348), 78 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) Word has length 189 [2022-11-02 21:06:21,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:21,704 INFO L225 Difference]: With dead ends: 173234 [2022-11-02 21:06:21,704 INFO L226 Difference]: Without dead ends: 173234 [2022-11-02 21:06:21,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5767 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4446, Invalid=16434, Unknown=0, NotChecked=0, Total=20880 [2022-11-02 21:06:21,705 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1485 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:21,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 13 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 21:06:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173234 states. [2022-11-02 21:06:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173234 to 90962. [2022-11-02 21:06:24,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90962 states, 90960 states have (on average 2.5772427440633243) internal successors, (234426), 90961 states have internal predecessors, (234426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90962 states to 90962 states and 234426 transitions. [2022-11-02 21:06:25,149 INFO L78 Accepts]: Start accepts. Automaton has 90962 states and 234426 transitions. Word has length 189 [2022-11-02 21:06:25,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:25,152 INFO L495 AbstractCegarLoop]: Abstraction has 90962 states and 234426 transitions. [2022-11-02 21:06:25,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 4.461538461538462) internal successors, (348), 78 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 21:06:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 90962 states and 234426 transitions. [2022-11-02 21:06:25,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-02 21:06:25,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:25,308 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:25,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:25,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:06:25,514 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:06:25,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:25,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2060414189, now seen corresponding path program 12 times [2022-11-02 21:06:25,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:25,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16286410] [2022-11-02 21:06:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:25,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 0 proven. 1621 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:06:27,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:27,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16286410] [2022-11-02 21:06:27,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16286410] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:06:27,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032474926] [2022-11-02 21:06:27,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:06:27,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:06:27,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:06:27,831 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:06:27,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-02 21:07:01,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-11-02 21:07:01,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:01,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 21:07:01,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 0 proven. 1621 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:07:02,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 0 proven. 1621 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 21:07:03,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032474926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:03,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:07:03,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38, 38] total 81 [2022-11-02 21:07:03,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234936057] [2022-11-02 21:07:03,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:03,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-02 21:07:03,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:03,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-02 21:07:03,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1523, Invalid=5283, Unknown=0, NotChecked=0, Total=6806 [2022-11-02 21:07:03,493 INFO L87 Difference]: Start difference. First operand 90962 states and 234426 transitions. Second operand has 83 states, 82 states have (on average 4.439024390243903) internal successors, (364), 82 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:08,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:08,932 INFO L93 Difference]: Finished difference Result 246660 states and 621039 transitions. [2022-11-02 21:07:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-11-02 21:07:08,932 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 4.439024390243903) internal successors, (364), 82 states have internal predecessors, (364), 0 states have call successors, (0), 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 197 [2022-11-02 21:07:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:10,054 INFO L225 Difference]: With dead ends: 246660 [2022-11-02 21:07:10,054 INFO L226 Difference]: Without dead ends: 246660 [2022-11-02 21:07:10,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6413 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4946, Invalid=18310, Unknown=0, NotChecked=0, Total=23256 [2022-11-02 21:07:10,056 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1663 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:10,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 13 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 21:07:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246660 states. [2022-11-02 21:07:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246660 to 147880. [2022-11-02 21:07:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147880 states, 147878 states have (on average 2.5870717753824097) internal successors, (382571), 147879 states have internal predecessors, (382571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147880 states to 147880 states and 382571 transitions. [2022-11-02 21:07:15,913 INFO L78 Accepts]: Start accepts. Automaton has 147880 states and 382571 transitions. Word has length 197 [2022-11-02 21:07:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:15,913 INFO L495 AbstractCegarLoop]: Abstraction has 147880 states and 382571 transitions. [2022-11-02 21:07:15,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 4.439024390243903) internal successors, (364), 82 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 147880 states and 382571 transitions. [2022-11-02 21:07:16,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-02 21:07:16,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:16,214 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:16,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-02 21:07:16,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:16,416 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 21:07:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash -537398836, now seen corresponding path program 13 times [2022-11-02 21:07:16,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:16,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404348384] [2022-11-02 21:07:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:16,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1402 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 21:07:19,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:19,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404348384] [2022-11-02 21:07:19,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404348384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:19,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280502407] [2022-11-02 21:07:19,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 21:07:19,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:19,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:19,271 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:07:19,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f47e9300-2a06-4eb4-91b7-c5ec93382800/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-02 21:07:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:19,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-02 21:07:19,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1396 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-02 21:07:20,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1396 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-02 21:07:21,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280502407] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:21,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:07:21,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 31, 31] total 70 [2022-11-02 21:07:21,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22689151] [2022-11-02 21:07:21,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:21,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-11-02 21:07:21,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:21,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-11-02 21:07:21,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1002, Invalid=4110, Unknown=0, NotChecked=0, Total=5112 [2022-11-02 21:07:21,160 INFO L87 Difference]: Start difference. First operand 147880 states and 382571 transitions. Second operand has 72 states, 71 states have (on average 4.845070422535211) internal successors, (344), 71 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:26,197 INFO L93 Difference]: Finished difference Result 395570 states and 1005578 transitions. [2022-11-02 21:07:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-02 21:07:26,198 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 4.845070422535211) internal successors, (344), 71 states have internal predecessors, (344), 0 states have call successors, (0), 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 208 [2022-11-02 21:07:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:28,180 INFO L225 Difference]: With dead ends: 395570 [2022-11-02 21:07:28,180 INFO L226 Difference]: Without dead ends: 395570 [2022-11-02 21:07:28,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4172 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2858, Invalid=11662, Unknown=0, NotChecked=0, Total=14520 [2022-11-02 21:07:28,181 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 1454 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:28,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 15 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:07:28,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395570 states.