./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/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_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/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_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:09:57,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:09:57,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:09:57,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:09:57,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:09:57,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:09:57,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:09:57,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:09:57,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:09:57,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:09:57,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:09:57,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:09:57,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:09:57,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:09:57,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:09:57,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:09:57,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:09:57,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:09:57,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:09:57,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:09:57,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:09:57,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:09:57,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:09:57,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:09:57,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:09:57,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:09:57,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:09:57,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:09:57,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:09:57,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:09:57,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:09:57,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:09:57,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:09:57,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:09:57,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:09:57,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:09:57,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:09:57,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:09:57,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:09:57,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:09:57,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:09:57,158 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:09:57,198 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:09:57,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:09:57,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:09:57,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:09:57,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:09:57,200 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:09:57,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:09:57,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:09:57,201 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:09:57,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:09:57,202 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:09:57,203 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:09:57,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:09:57,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:09:57,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:09:57,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:09:57,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:09:57,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:09:57,204 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:09:57,204 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:09:57,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:09:57,205 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:09:57,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:09:57,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:09:57,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:09:57,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:09:57,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:09:57,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:09:57,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:09:57,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:09:57,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:09:57,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:09:57,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:09:57,207 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_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2022-11-02 20:09:57,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:09:57,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:09:57,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:09:57,533 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:09:57,534 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:09:57,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-02 20:09:57,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/data/3a66a17e6/bf1efdf194ee44d8942c9f020744bd9f/FLAGd8b9f782e [2022-11-02 20:09:58,209 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:09:58,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-02 20:09:58,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/data/3a66a17e6/bf1efdf194ee44d8942c9f020744bd9f/FLAGd8b9f782e [2022-11-02 20:09:58,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/data/3a66a17e6/bf1efdf194ee44d8942c9f020744bd9f [2022-11-02 20:09:58,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:09:58,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:09:58,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:09:58,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:09:58,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:09:58,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:09:58" (1/1) ... [2022-11-02 20:09:58,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da96410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:58, skipping insertion in model container [2022-11-02 20:09:58,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:09:58" (1/1) ... [2022-11-02 20:09:58,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:09:58,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:09:58,775 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_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-02 20:09:59,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:09:59,255 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:09:59,267 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_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-02 20:09:59,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:09:59,406 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:09:59,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59 WrapperNode [2022-11-02 20:09:59,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:09:59,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:09:59,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:09:59,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:09:59,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (1/1) ... [2022-11-02 20:09:59,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (1/1) ... [2022-11-02 20:09:59,490 INFO L138 Inliner]: procedures = 364, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-11-02 20:09:59,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:09:59,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:09:59,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:09:59,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:09:59,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (1/1) ... [2022-11-02 20:09:59,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (1/1) ... [2022-11-02 20:09:59,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (1/1) ... [2022-11-02 20:09:59,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (1/1) ... [2022-11-02 20:09:59,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (1/1) ... [2022-11-02 20:09:59,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (1/1) ... [2022-11-02 20:09:59,529 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (1/1) ... [2022-11-02 20:09:59,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (1/1) ... [2022-11-02 20:09:59,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:09:59,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:09:59,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:09:59,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:09:59,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (1/1) ... [2022-11-02 20:09:59,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:09:59,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:59,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:09:59,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:09:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:09:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:09:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:09:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:09:59,628 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:09:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:09:59,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-11-02 20:09:59,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-11-02 20:09:59,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:09:59,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:09:59,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:09:59,633 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:09:59,825 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:09:59,827 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:10:00,057 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:10:00,071 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:10:00,074 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:10:00,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:10:00 BoogieIcfgContainer [2022-11-02 20:10:00,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:10:00,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:10:00,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:10:00,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:10:00,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:09:58" (1/3) ... [2022-11-02 20:10:00,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167088a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:10:00, skipping insertion in model container [2022-11-02 20:10:00,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:59" (2/3) ... [2022-11-02 20:10:00,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167088a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:10:00, skipping insertion in model container [2022-11-02 20:10:00,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:10:00" (3/3) ... [2022-11-02 20:10:00,088 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-11-02 20:10:00,098 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:10:00,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:10:00,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-02 20:10:00,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:10:00,183 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:10:00,218 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:10:00,243 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 112 transitions, 232 flow [2022-11-02 20:10:00,254 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 112 transitions, 232 flow [2022-11-02 20:10:00,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 112 transitions, 232 flow [2022-11-02 20:10:00,361 INFO L130 PetriNetUnfolder]: 7/111 cut-off events. [2022-11-02 20:10:00,361 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:10:00,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 111 events. 7/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-02 20:10:00,370 INFO L118 LiptonReduction]: Number of co-enabled transitions 1458 [2022-11-02 20:10:04,151 INFO L133 LiptonReduction]: Checked pairs total: 2917 [2022-11-02 20:10:04,151 INFO L135 LiptonReduction]: Total number of compositions: 108 [2022-11-02 20:10:04,161 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 25 transitions, 58 flow [2022-11-02 20:10:04,180 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 101 states, 77 states have (on average 2.5974025974025974) internal successors, (200), 100 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:04,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:10:04,205 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;@3245bf94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:10:04,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-02 20:10:04,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 77 states have (on average 2.5974025974025974) internal successors, (200), 100 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:10:04,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:04,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:10:04,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:04,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:04,219 INFO L85 PathProgramCache]: Analyzing trace with hash 12915887, now seen corresponding path program 1 times [2022-11-02 20:10:04,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:04,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691123062] [2022-11-02 20:10:04,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:04,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:04,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:04,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691123062] [2022-11-02 20:10:04,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691123062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:04,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:04,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:10:04,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721885047] [2022-11-02 20:10:04,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:04,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:10:04,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:04,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:10:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:04,628 INFO L87 Difference]: Start difference. First operand has 101 states, 77 states have (on average 2.5974025974025974) internal successors, (200), 100 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:04,722 INFO L93 Difference]: Finished difference Result 124 states and 246 transitions. [2022-11-02 20:10:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:10:04,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:10:04,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:04,741 INFO L225 Difference]: With dead ends: 124 [2022-11-02 20:10:04,742 INFO L226 Difference]: Without dead ends: 124 [2022-11-02 20:10:04,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:04,748 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:04,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:10:04,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-02 20:10:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2022-11-02 20:10:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 97 states have (on average 2.4948453608247423) internal successors, (242), 120 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 242 transitions. [2022-11-02 20:10:04,815 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 242 transitions. Word has length 4 [2022-11-02 20:10:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:04,815 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 242 transitions. [2022-11-02 20:10:04,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 242 transitions. [2022-11-02 20:10:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:10:04,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:04,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:04,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:10:04,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:04,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:04,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1772117322, now seen corresponding path program 1 times [2022-11-02 20:10:04,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:04,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123546317] [2022-11-02 20:10:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:04,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:04,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:04,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123546317] [2022-11-02 20:10:04,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123546317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:04,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:04,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:10:04,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401662865] [2022-11-02 20:10:04,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:04,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:10:04,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:10:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:04,948 INFO L87 Difference]: Start difference. First operand 121 states and 242 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:05,020 INFO L93 Difference]: Finished difference Result 173 states and 345 transitions. [2022-11-02 20:10:05,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:10:05,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:10:05,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:05,022 INFO L225 Difference]: With dead ends: 173 [2022-11-02 20:10:05,023 INFO L226 Difference]: Without dead ends: 173 [2022-11-02 20:10:05,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:05,024 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:05,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:10:05,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-02 20:10:05,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 155. [2022-11-02 20:10:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 131 states have (on average 2.49618320610687) internal successors, (327), 154 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 327 transitions. [2022-11-02 20:10:05,040 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 327 transitions. Word has length 7 [2022-11-02 20:10:05,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:05,040 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 327 transitions. [2022-11-02 20:10:05,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,041 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 327 transitions. [2022-11-02 20:10:05,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:10:05,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:05,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:05,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:10:05,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:05,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:05,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1754884312, now seen corresponding path program 1 times [2022-11-02 20:10:05,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:05,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592133476] [2022-11-02 20:10:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:05,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:05,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:05,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592133476] [2022-11-02 20:10:05,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592133476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:05,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:05,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:10:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303836497] [2022-11-02 20:10:05,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:05,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:10:05,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:05,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:10:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:05,110 INFO L87 Difference]: Start difference. First operand 155 states and 327 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:05,169 INFO L93 Difference]: Finished difference Result 217 states and 452 transitions. [2022-11-02 20:10:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:10:05,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:10:05,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:05,172 INFO L225 Difference]: With dead ends: 217 [2022-11-02 20:10:05,172 INFO L226 Difference]: Without dead ends: 217 [2022-11-02 20:10:05,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:05,174 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:05,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:10:05,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-02 20:10:05,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 197. [2022-11-02 20:10:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 173 states have (on average 2.4971098265895955) internal successors, (432), 196 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 432 transitions. [2022-11-02 20:10:05,192 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 432 transitions. Word has length 7 [2022-11-02 20:10:05,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:05,193 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 432 transitions. [2022-11-02 20:10:05,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,193 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 432 transitions. [2022-11-02 20:10:05,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:10:05,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:05,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:05,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:10:05,194 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:05,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash 970303726, now seen corresponding path program 1 times [2022-11-02 20:10:05,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:05,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331964688] [2022-11-02 20:10:05,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:05,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:05,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:05,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331964688] [2022-11-02 20:10:05,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331964688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:05,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:05,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:10:05,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101557064] [2022-11-02 20:10:05,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:05,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:10:05,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:05,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:10:05,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:05,317 INFO L87 Difference]: Start difference. First operand 197 states and 432 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:05,377 INFO L93 Difference]: Finished difference Result 133 states and 216 transitions. [2022-11-02 20:10:05,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:10:05,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:10:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:05,385 INFO L225 Difference]: With dead ends: 133 [2022-11-02 20:10:05,385 INFO L226 Difference]: Without dead ends: 133 [2022-11-02 20:10:05,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:05,389 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:05,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:10:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-02 20:10:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2022-11-02 20:10:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 109 states have (on average 1.981651376146789) internal successors, (216), 132 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 216 transitions. [2022-11-02 20:10:05,423 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 216 transitions. Word has length 8 [2022-11-02 20:10:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:05,424 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 216 transitions. [2022-11-02 20:10:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 216 transitions. [2022-11-02 20:10:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:10:05,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:05,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:05,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:10:05,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash 898938626, now seen corresponding path program 1 times [2022-11-02 20:10:05,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:05,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294918025] [2022-11-02 20:10:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:05,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:05,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294918025] [2022-11-02 20:10:05,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294918025] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:05,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713833520] [2022-11-02 20:10:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:05,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:05,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:05,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:05,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:10:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:05,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:10:05,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:05,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:10:05,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713833520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:05,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:10:05,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-02 20:10:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780446958] [2022-11-02 20:10:05,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:05,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:10:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:10:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:10:05,772 INFO L87 Difference]: Start difference. First operand 133 states and 216 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:05,882 INFO L93 Difference]: Finished difference Result 121 states and 192 transitions. [2022-11-02 20:10:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:10:05,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:10:05,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:05,883 INFO L225 Difference]: With dead ends: 121 [2022-11-02 20:10:05,884 INFO L226 Difference]: Without dead ends: 121 [2022-11-02 20:10:05,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 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 20:10:05,885 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:05,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:10:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-02 20:10:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-02 20:10:05,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 105 states have (on average 1.8285714285714285) internal successors, (192), 120 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 192 transitions. [2022-11-02 20:10:05,899 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 192 transitions. Word has length 8 [2022-11-02 20:10:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:05,900 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 192 transitions. [2022-11-02 20:10:05,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 192 transitions. [2022-11-02 20:10:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:10:05,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:05,902 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:05,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:06,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:06,116 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:06,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:06,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2097291322, now seen corresponding path program 1 times [2022-11-02 20:10:06,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:06,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016377755] [2022-11-02 20:10:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:06,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:06,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016377755] [2022-11-02 20:10:06,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016377755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474476328] [2022-11-02 20:10:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:06,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:06,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:06,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:06,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:10:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:06,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:10:06,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:06,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:06,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474476328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:06,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:10:06,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-11-02 20:10:06,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929668630] [2022-11-02 20:10:06,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:06,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:10:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:06,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:10:06,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:10:06,416 INFO L87 Difference]: Start difference. First operand 121 states and 192 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:06,700 INFO L93 Difference]: Finished difference Result 281 states and 451 transitions. [2022-11-02 20:10:06,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:10:06,700 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:10:06,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:06,702 INFO L225 Difference]: With dead ends: 281 [2022-11-02 20:10:06,702 INFO L226 Difference]: Without dead ends: 281 [2022-11-02 20:10:06,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:10:06,703 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 81 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:06,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 6 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:10:06,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-02 20:10:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 229. [2022-11-02 20:10:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 213 states have (on average 1.7699530516431925) internal successors, (377), 228 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 377 transitions. [2022-11-02 20:10:06,727 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 377 transitions. Word has length 9 [2022-11-02 20:10:06,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:06,727 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 377 transitions. [2022-11-02 20:10:06,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:06,728 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 377 transitions. [2022-11-02 20:10:06,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:10:06,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:06,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:10:06,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:06,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:10:06,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:06,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:06,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1157266307, now seen corresponding path program 1 times [2022-11-02 20:10:06,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:06,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107448641] [2022-11-02 20:10:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:06,990 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 20:10:06,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:06,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107448641] [2022-11-02 20:10:06,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107448641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:06,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437224369] [2022-11-02 20:10:06,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:06,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:06,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:06,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:07,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:10:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:07,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:10:07,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:07,095 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 20:10:07,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:10:07,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437224369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:07,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:10:07,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:10:07,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65875046] [2022-11-02 20:10:07,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:07,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:10:07,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:07,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:10:07,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:10:07,097 INFO L87 Difference]: Start difference. First operand 229 states and 377 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:07,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:07,152 INFO L93 Difference]: Finished difference Result 215 states and 348 transitions. [2022-11-02 20:10:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:10:07,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:10:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:07,154 INFO L225 Difference]: With dead ends: 215 [2022-11-02 20:10:07,155 INFO L226 Difference]: Without dead ends: 215 [2022-11-02 20:10:07,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:10:07,155 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:07,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 8 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:10:07,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-02 20:10:07,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 211. [2022-11-02 20:10:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 199 states have (on average 1.743718592964824) internal successors, (347), 210 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:07,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 347 transitions. [2022-11-02 20:10:07,163 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 347 transitions. Word has length 11 [2022-11-02 20:10:07,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:07,163 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 347 transitions. [2022-11-02 20:10:07,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:07,163 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 347 transitions. [2022-11-02 20:10:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:10:07,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:07,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:10:07,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:07,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:10:07,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:07,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:07,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1157266308, now seen corresponding path program 1 times [2022-11-02 20:10:07,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:07,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248387708] [2022-11-02 20:10:07,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:07,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:07,443 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 20:10:07,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:07,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248387708] [2022-11-02 20:10:07,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248387708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:07,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:07,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:10:07,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195255302] [2022-11-02 20:10:07,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:07,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:10:07,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:07,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:10:07,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:07,446 INFO L87 Difference]: Start difference. First operand 211 states and 347 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 20:10:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:07,480 INFO L93 Difference]: Finished difference Result 193 states and 317 transitions. [2022-11-02 20:10:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:10:07,481 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 20:10:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:07,482 INFO L225 Difference]: With dead ends: 193 [2022-11-02 20:10:07,482 INFO L226 Difference]: Without dead ends: 193 [2022-11-02 20:10:07,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:07,483 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:07,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 6 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:10:07,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-02 20:10:07,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 168. [2022-11-02 20:10:07,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 160 states have (on average 1.75625) internal successors, (281), 167 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 281 transitions. [2022-11-02 20:10:07,490 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 281 transitions. Word has length 11 [2022-11-02 20:10:07,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:07,490 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 281 transitions. [2022-11-02 20:10:07,490 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 20:10:07,491 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 281 transitions. [2022-11-02 20:10:07,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:10:07,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:07,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:10:07,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:10:07,492 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:07,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:07,493 INFO L85 PathProgramCache]: Analyzing trace with hash -936906659, now seen corresponding path program 1 times [2022-11-02 20:10:07,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:07,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297106408] [2022-11-02 20:10:07,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:07,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:07,569 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 20:10:07,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:07,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297106408] [2022-11-02 20:10:07,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297106408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:07,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774027897] [2022-11-02 20:10:07,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:07,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:07,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:07,571 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:07,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:10:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:07,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:10:07,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:07,684 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 20:10:07,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:10:07,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774027897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:07,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:10:07,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:10:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751320147] [2022-11-02 20:10:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:07,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:10:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:10:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:10:07,687 INFO L87 Difference]: Start difference. First operand 168 states and 281 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:07,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:07,743 INFO L93 Difference]: Finished difference Result 153 states and 254 transitions. [2022-11-02 20:10:07,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:10:07,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:10:07,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:07,745 INFO L225 Difference]: With dead ends: 153 [2022-11-02 20:10:07,745 INFO L226 Difference]: Without dead ends: 153 [2022-11-02 20:10:07,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:10:07,747 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:07,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 5 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:10:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-02 20:10:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2022-11-02 20:10:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 145 states have (on average 1.7448275862068965) internal successors, (253), 150 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 253 transitions. [2022-11-02 20:10:07,753 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 253 transitions. Word has length 11 [2022-11-02 20:10:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:07,753 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 253 transitions. [2022-11-02 20:10:07,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 253 transitions. [2022-11-02 20:10:07,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:10:07,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:07,755 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 20:10:07,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:07,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:07,959 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:07,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:07,959 INFO L85 PathProgramCache]: Analyzing trace with hash -936906658, now seen corresponding path program 1 times [2022-11-02 20:10:07,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:07,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157916517] [2022-11-02 20:10:07,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:07,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:08,036 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 20:10:08,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:08,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157916517] [2022-11-02 20:10:08,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157916517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:08,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:08,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:10:08,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295382246] [2022-11-02 20:10:08,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:08,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:10:08,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:08,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:10:08,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:08,039 INFO L87 Difference]: Start difference. First operand 151 states and 253 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 20:10:08,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:08,086 INFO L93 Difference]: Finished difference Result 134 states and 225 transitions. [2022-11-02 20:10:08,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:10:08,087 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 20:10:08,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:08,088 INFO L225 Difference]: With dead ends: 134 [2022-11-02 20:10:08,088 INFO L226 Difference]: Without dead ends: 134 [2022-11-02 20:10:08,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:10:08,089 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:08,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:10:08,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-02 20:10:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 124. [2022-11-02 20:10:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 120 states have (on average 1.7416666666666667) internal successors, (209), 123 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 209 transitions. [2022-11-02 20:10:08,094 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 209 transitions. Word has length 11 [2022-11-02 20:10:08,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:08,094 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 209 transitions. [2022-11-02 20:10:08,094 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 20:10:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 209 transitions. [2022-11-02 20:10:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 20:10:08,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:08,095 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1] [2022-11-02 20:10:08,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:10:08,096 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:08,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:08,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1639990484, now seen corresponding path program 2 times [2022-11-02 20:10:08,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:08,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055984899] [2022-11-02 20:10:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:08,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:08,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:08,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055984899] [2022-11-02 20:10:08,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055984899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:08,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707685475] [2022-11-02 20:10:08,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:10:08,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:08,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:08,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:08,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:10:08,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:10:08,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:10:08,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:10:08,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:08,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:08,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707685475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:08,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:10:08,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-02 20:10:08,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416484315] [2022-11-02 20:10:08,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:08,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:10:08,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:08,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:10:08,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:10:08,550 INFO L87 Difference]: Start difference. First operand 124 states and 209 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:09,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:09,351 INFO L93 Difference]: Finished difference Result 524 states and 876 transitions. [2022-11-02 20:10:09,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-02 20:10:09,352 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-02 20:10:09,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:09,354 INFO L225 Difference]: With dead ends: 524 [2022-11-02 20:10:09,355 INFO L226 Difference]: Without dead ends: 524 [2022-11-02 20:10:09,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=537, Invalid=1185, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:10:09,357 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 399 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:09,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 15 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:10:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-02 20:10:09,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 256. [2022-11-02 20:10:09,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 1.7182539682539681) internal successors, (433), 255 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 433 transitions. [2022-11-02 20:10:09,370 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 433 transitions. Word has length 17 [2022-11-02 20:10:09,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:09,370 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 433 transitions. [2022-11-02 20:10:09,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 433 transitions. [2022-11-02 20:10:09,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:10:09,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:09,374 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1] [2022-11-02 20:10:09,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:09,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:09,589 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:09,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1955930104, now seen corresponding path program 3 times [2022-11-02 20:10:09,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:09,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96180140] [2022-11-02 20:10:09,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:09,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:09,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:09,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96180140] [2022-11-02 20:10:09,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96180140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:09,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532839600] [2022-11-02 20:10:09,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:10:09,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:09,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:09,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:10,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:10:10,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-02 20:10:10,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:10:10,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:10:10,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:10,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:10,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532839600] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:10,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:10:10,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-11-02 20:10:10,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330070585] [2022-11-02 20:10:10,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:10,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 20:10:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:10,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 20:10:10,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:10:10,639 INFO L87 Difference]: Start difference. First operand 256 states and 433 transitions. Second operand has 34 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:14,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:14,700 INFO L93 Difference]: Finished difference Result 1819 states and 3022 transitions. [2022-11-02 20:10:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-11-02 20:10:14,700 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 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 33 [2022-11-02 20:10:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:14,707 INFO L225 Difference]: With dead ends: 1819 [2022-11-02 20:10:14,707 INFO L226 Difference]: Without dead ends: 1819 [2022-11-02 20:10:14,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9579 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=6833, Invalid=14337, Unknown=0, NotChecked=0, Total=21170 [2022-11-02 20:10:14,715 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1401 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:14,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 33 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:10:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2022-11-02 20:10:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 520. [2022-11-02 20:10:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 516 states have (on average 1.7073643410852712) internal successors, (881), 519 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 881 transitions. [2022-11-02 20:10:14,771 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 881 transitions. Word has length 33 [2022-11-02 20:10:14,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:14,773 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 881 transitions. [2022-11-02 20:10:14,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:14,774 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 881 transitions. [2022-11-02 20:10:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:10:14,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:14,778 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1] [2022-11-02 20:10:14,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:15,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:15,005 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:15,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:15,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1924047248, now seen corresponding path program 4 times [2022-11-02 20:10:15,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:15,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513086946] [2022-11-02 20:10:15,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:15,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:16,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:16,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513086946] [2022-11-02 20:10:16,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513086946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:16,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411805832] [2022-11-02 20:10:16,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:10:16,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:16,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:16,393 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:16,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:10:16,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:10:16,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:10:16,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-02 20:10:16,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:16,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:17,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411805832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:17,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:10:17,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 64 [2022-11-02 20:10:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415142595] [2022-11-02 20:10:17,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:17,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-02 20:10:17,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-02 20:10:17,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2022-11-02 20:10:17,792 INFO L87 Difference]: Start difference. First operand 520 states and 881 transitions. Second operand has 66 states, 65 states have (on average 2.0923076923076924) internal successors, (136), 65 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 20:10:51,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:51,039 INFO L93 Difference]: Finished difference Result 6653 states and 10986 transitions. [2022-11-02 20:10:51,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2022-11-02 20:10:51,040 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.0923076923076924) internal successors, (136), 65 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 65 [2022-11-02 20:10:51,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:51,068 INFO L225 Difference]: With dead ends: 6653 [2022-11-02 20:10:51,068 INFO L226 Difference]: Without dead ends: 6653 [2022-11-02 20:10:51,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 544 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182051 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=98145, Invalid=199425, Unknown=0, NotChecked=0, Total=297570 [2022-11-02 20:10:51,095 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 4765 mSDsluCounter, 2400 mSDsCounter, 0 mSdLazyCounter, 4215 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4765 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 5138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 4215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:51,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4765 Valid, 95 Invalid, 5138 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [923 Valid, 4215 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 20:10:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6653 states. [2022-11-02 20:10:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6653 to 1048. [2022-11-02 20:10:51,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1044 states have (on average 1.7021072796934866) internal successors, (1777), 1047 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1777 transitions. [2022-11-02 20:10:51,175 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1777 transitions. Word has length 65 [2022-11-02 20:10:51,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:51,176 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1777 transitions. [2022-11-02 20:10:51,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.0923076923076924) internal successors, (136), 65 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 20:10:51,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1777 transitions. [2022-11-02 20:10:51,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-02 20:10:51,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:51,180 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1] [2022-11-02 20:10:51,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:51,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:10:51,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:51,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:51,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1780710208, now seen corresponding path program 5 times [2022-11-02 20:10:51,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:51,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539264016] [2022-11-02 20:10:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:51,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:55,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:55,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539264016] [2022-11-02 20:10:55,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539264016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:55,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169695345] [2022-11-02 20:10:55,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:10:55,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:55,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:55,740 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:55,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:10:56,198 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-11-02 20:10:56,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:10:56,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:10:56,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 1921 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:10:57,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:10:57,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169695345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:57,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:10:57,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [63] total 96 [2022-11-02 20:10:57,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186180966] [2022-11-02 20:10:57,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:57,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-02 20:10:57,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:57,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-02 20:10:57,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1615, Invalid=7505, Unknown=0, NotChecked=0, Total=9120 [2022-11-02 20:10:57,600 INFO L87 Difference]: Start difference. First operand 1048 states and 1777 transitions. Second operand has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:58,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:58,242 INFO L93 Difference]: Finished difference Result 5366 states and 9600 transitions. [2022-11-02 20:10:58,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:10:58,242 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2022-11-02 20:10:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:58,259 INFO L225 Difference]: With dead ends: 5366 [2022-11-02 20:10:58,260 INFO L226 Difference]: Without dead ends: 4443 [2022-11-02 20:10:58,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2821 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1615, Invalid=7505, Unknown=0, NotChecked=0, Total=9120 [2022-11-02 20:10:58,262 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 178 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:58,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 164 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:10:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4443 states. [2022-11-02 20:10:58,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4443 to 4366. [2022-11-02 20:10:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4366 states, 4363 states have (on average 1.761861104744442) internal successors, (7687), 4365 states have internal predecessors, (7687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4366 states to 4366 states and 7687 transitions. [2022-11-02 20:10:58,371 INFO L78 Accepts]: Start accepts. Automaton has 4366 states and 7687 transitions. Word has length 129 [2022-11-02 20:10:58,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:58,371 INFO L495 AbstractCegarLoop]: Abstraction has 4366 states and 7687 transitions. [2022-11-02 20:10:58,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:10:58,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4366 states and 7687 transitions. [2022-11-02 20:10:58,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-02 20:10:58,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:58,382 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:58,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:58,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:10:58,590 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:10:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash -319609428, now seen corresponding path program 1 times [2022-11-02 20:10:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:58,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920102895] [2022-11-02 20:10:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:58,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:59,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:59,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920102895] [2022-11-02 20:10:59,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920102895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:59,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145385681] [2022-11-02 20:10:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:59,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:59,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:59,936 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:59,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:11:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:00,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 20:11:00,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 1610 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-02 20:11:00,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:00,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145385681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:00,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:11:00,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [33] total 56 [2022-11-02 20:11:00,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754506525] [2022-11-02 20:11:00,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:00,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:11:00,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:00,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:11:00,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=815, Invalid=2265, Unknown=0, NotChecked=0, Total=3080 [2022-11-02 20:11:00,781 INFO L87 Difference]: Start difference. First operand 4366 states and 7687 transitions. Second operand has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:01,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:01,247 INFO L93 Difference]: Finished difference Result 6910 states and 11519 transitions. [2022-11-02 20:11:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:11:01,247 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 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 130 [2022-11-02 20:11:01,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:01,265 INFO L225 Difference]: With dead ends: 6910 [2022-11-02 20:11:01,265 INFO L226 Difference]: Without dead ends: 5921 [2022-11-02 20:11:01,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=815, Invalid=2265, Unknown=0, NotChecked=0, Total=3080 [2022-11-02 20:11:01,267 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 197 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:01,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 79 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:11:01,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5921 states. [2022-11-02 20:11:01,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5921 to 5897. [2022-11-02 20:11:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5897 states, 5895 states have (on average 1.53774385072095) internal successors, (9065), 5896 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5897 states to 5897 states and 9065 transitions. [2022-11-02 20:11:01,399 INFO L78 Accepts]: Start accepts. Automaton has 5897 states and 9065 transitions. Word has length 130 [2022-11-02 20:11:01,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:01,400 INFO L495 AbstractCegarLoop]: Abstraction has 5897 states and 9065 transitions. [2022-11-02 20:11:01,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.086956521739131) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:01,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5897 states and 9065 transitions. [2022-11-02 20:11:01,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-02 20:11:01,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:01,414 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 12, 11, 11, 11, 1, 1, 1, 1, 1] [2022-11-02 20:11:01,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:01,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:11:01,631 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:11:01,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:01,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1827919504, now seen corresponding path program 1 times [2022-11-02 20:11:01,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:01,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457259288] [2022-11-02 20:11:01,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:01,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 1002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:03,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:03,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457259288] [2022-11-02 20:11:03,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457259288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:11:03,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991815939] [2022-11-02 20:11:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:03,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:11:03,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:11:03,578 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:11:03,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:11:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:03,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 20:11:03,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 1002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:04,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:11:06,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 1002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:06,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991815939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:11:06,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:11:06,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 87 [2022-11-02 20:11:06,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105747626] [2022-11-02 20:11:06,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:11:06,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-11-02 20:11:06,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:06,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-11-02 20:11:06,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2486, Invalid=5346, Unknown=0, NotChecked=0, Total=7832 [2022-11-02 20:11:06,217 INFO L87 Difference]: Start difference. First operand 5897 states and 9065 transitions. Second operand has 89 states, 88 states have (on average 3.034090909090909) internal successors, (267), 88 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:25,916 INFO L93 Difference]: Finished difference Result 193761 states and 297867 transitions. [2022-11-02 20:11:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 351 states. [2022-11-02 20:11:25,916 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 3.034090909090909) internal successors, (267), 88 states have internal predecessors, (267), 0 states have call successors, (0), 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 130 [2022-11-02 20:11:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:26,999 INFO L225 Difference]: With dead ends: 193761 [2022-11-02 20:11:26,999 INFO L226 Difference]: Without dead ends: 178821 [2022-11-02 20:11:27,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 404 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81438 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=58052, Invalid=106378, Unknown=0, NotChecked=0, Total=164430 [2022-11-02 20:11:27,017 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3520 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3520 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:27,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3520 Valid, 41 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:11:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178821 states. [2022-11-02 20:11:29,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178821 to 17964. [2022-11-02 20:11:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17964 states, 17962 states have (on average 1.44432691237056) internal successors, (25943), 17963 states have internal predecessors, (25943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17964 states to 17964 states and 25943 transitions. [2022-11-02 20:11:29,450 INFO L78 Accepts]: Start accepts. Automaton has 17964 states and 25943 transitions. Word has length 130 [2022-11-02 20:11:29,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:29,451 INFO L495 AbstractCegarLoop]: Abstraction has 17964 states and 25943 transitions. [2022-11-02 20:11:29,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 3.034090909090909) internal successors, (267), 88 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:29,452 INFO L276 IsEmpty]: Start isEmpty. Operand 17964 states and 25943 transitions. [2022-11-02 20:11:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-02 20:11:29,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:29,506 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 12, 11, 11, 11, 1, 1, 1, 1, 1] [2022-11-02 20:11:29,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:29,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:11:29,735 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:11:29,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:29,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1755299472, now seen corresponding path program 2 times [2022-11-02 20:11:29,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:11:29,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782811869] [2022-11-02 20:11:29,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:29,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:11:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 1002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:32,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:32,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782811869] [2022-11-02 20:11:32,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782811869] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:11:32,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960092409] [2022-11-02 20:11:32,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:11:32,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:11:32,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:11:32,313 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:11:32,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:11:32,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:11:32,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:11:32,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 20:11:32,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 1002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:32,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:11:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 1002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:11:34,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960092409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:11:34,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:11:34,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 87 [2022-11-02 20:11:34,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166368354] [2022-11-02 20:11:34,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:11:34,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-11-02 20:11:34,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:11:34,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-11-02 20:11:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2486, Invalid=5346, Unknown=0, NotChecked=0, Total=7832 [2022-11-02 20:11:34,795 INFO L87 Difference]: Start difference. First operand 17964 states and 25943 transitions. Second operand has 89 states, 88 states have (on average 3.034090909090909) internal successors, (267), 88 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:56,873 INFO L93 Difference]: Finished difference Result 338755 states and 523230 transitions. [2022-11-02 20:11:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 366 states. [2022-11-02 20:11:56,874 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 3.034090909090909) internal successors, (267), 88 states have internal predecessors, (267), 0 states have call successors, (0), 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 130 [2022-11-02 20:11:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:57,901 INFO L225 Difference]: With dead ends: 338755 [2022-11-02 20:11:57,901 INFO L226 Difference]: Without dead ends: 308014 [2022-11-02 20:11:57,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93870 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=67186, Invalid=113864, Unknown=0, NotChecked=0, Total=181050 [2022-11-02 20:11:57,912 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3862 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 1080 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3862 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1080 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:57,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3862 Valid, 43 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1080 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-02 20:11:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308014 states. [2022-11-02 20:12:01,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308014 to 56472. [2022-11-02 20:12:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56472 states, 56470 states have (on average 1.35126615902249) internal successors, (76306), 56471 states have internal predecessors, (76306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56472 states to 56472 states and 76306 transitions. [2022-11-02 20:12:01,261 INFO L78 Accepts]: Start accepts. Automaton has 56472 states and 76306 transitions. Word has length 130 [2022-11-02 20:12:01,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:01,262 INFO L495 AbstractCegarLoop]: Abstraction has 56472 states and 76306 transitions. [2022-11-02 20:12:01,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 3.034090909090909) internal successors, (267), 88 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 56472 states and 76306 transitions. [2022-11-02 20:12:01,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-02 20:12:01,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:01,382 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 12, 11, 11, 11, 1, 1, 1, 1, 1] [2022-11-02 20:12:01,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-02 20:12:01,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:12:01,602 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:12:01,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:01,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1953186160, now seen corresponding path program 3 times [2022-11-02 20:12:01,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:01,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891880909] [2022-11-02 20:12:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:01,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 1002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:03,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:03,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891880909] [2022-11-02 20:12:03,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891880909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:03,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818390239] [2022-11-02 20:12:03,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:12:03,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:03,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:03,708 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:03,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:12:04,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2022-11-02 20:12:04,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:12:04,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 20:12:04,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 1002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:04,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:12:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 1002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:06,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818390239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:12:06,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:12:06,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 87 [2022-11-02 20:12:06,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399508793] [2022-11-02 20:12:06,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:12:06,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-11-02 20:12:06,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:06,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-11-02 20:12:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2486, Invalid=5346, Unknown=0, NotChecked=0, Total=7832 [2022-11-02 20:12:06,319 INFO L87 Difference]: Start difference. First operand 56472 states and 76306 transitions. Second operand has 89 states, 88 states have (on average 3.034090909090909) internal successors, (267), 88 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:33,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:33,779 INFO L93 Difference]: Finished difference Result 740801 states and 1097302 transitions. [2022-11-02 20:12:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 429 states. [2022-11-02 20:12:33,779 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 3.034090909090909) internal successors, (267), 88 states have internal predecessors, (267), 0 states have call successors, (0), 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 130 [2022-11-02 20:12:33,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:36,319 INFO L225 Difference]: With dead ends: 740801 [2022-11-02 20:12:36,319 INFO L226 Difference]: Without dead ends: 707910 [2022-11-02 20:12:36,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 482 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131509 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=87440, Invalid=146332, Unknown=0, NotChecked=0, Total=233772 [2022-11-02 20:12:36,335 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4231 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 1155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4231 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1155 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:36,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4231 Valid, 20 Invalid, 3531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1155 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-02 20:12:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707910 states. [2022-11-02 20:12:45,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707910 to 216004. [2022-11-02 20:12:46,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216004 states, 216002 states have (on average 1.3472653030990454) internal successors, (291012), 216003 states have internal predecessors, (291012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216004 states to 216004 states and 291012 transitions. [2022-11-02 20:12:47,545 INFO L78 Accepts]: Start accepts. Automaton has 216004 states and 291012 transitions. Word has length 130 [2022-11-02 20:12:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:47,545 INFO L495 AbstractCegarLoop]: Abstraction has 216004 states and 291012 transitions. [2022-11-02 20:12:47,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 3.034090909090909) internal successors, (267), 88 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:12:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 216004 states and 291012 transitions. [2022-11-02 20:12:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-02 20:12:48,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:48,032 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 14, 13, 13, 13, 1, 1, 1, 1, 1] [2022-11-02 20:12:48,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:48,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:12:48,233 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 20:12:48,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:48,233 INFO L85 PathProgramCache]: Analyzing trace with hash -159206332, now seen corresponding path program 2 times [2022-11-02 20:12:48,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:12:48,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374353057] [2022-11-02 20:12:48,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:12:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:51,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:12:51,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374353057] [2022-11-02 20:12:51,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374353057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:12:51,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151470627] [2022-11-02 20:12:51,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:12:51,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:12:51,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:12:51,101 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:12:51,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0aec4e7f-dc9d-4a6f-8bac-8afc0a85d1dc/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:12:51,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:12:51,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:12:51,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-02 20:12:51,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:51,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:12:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:12:54,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151470627] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:12:54,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:12:54,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 101 [2022-11-02 20:12:54,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853189566] [2022-11-02 20:12:54,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:12:54,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-11-02 20:12:54,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:12:54,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-11-02 20:12:54,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2913, Invalid=7593, Unknown=0, NotChecked=0, Total=10506 [2022-11-02 20:12:54,005 INFO L87 Difference]: Start difference. First operand 216004 states and 291012 transitions. Second operand has 103 states, 102 states have (on average 2.6176470588235294) internal successors, (267), 102 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)