./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/clever.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a --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 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e --- 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-b5237d8 [2022-11-21 16:08:31,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:08:31,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:08:31,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:08:31,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:08:31,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:08:31,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:08:31,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:08:31,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:08:31,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:08:31,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:08:31,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:08:31,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:08:31,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:08:31,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:08:31,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:08:31,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:08:31,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:08:31,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:08:31,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:08:31,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:08:31,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:08:31,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:08:31,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:08:31,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:08:31,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:08:31,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:08:31,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:08:31,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:08:31,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:08:31,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:08:31,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:08:31,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:08:31,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:08:31,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:08:31,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:08:31,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:08:31,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:08:31,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:08:31,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:08:31,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:08:31,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:08:31,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:08:31,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:08:31,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:08:31,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:08:31,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:08:31,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:08:31,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:08:31,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:08:31,109 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:08:31,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:08:31,110 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:08:31,110 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:08:31,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:08:31,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:08:31,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:08:31,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:08:31,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:08:31,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:08:31,111 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:08:31,112 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:08:31,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:08:31,112 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:08:31,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:08:31,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:08:31,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:08:31,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:08:31,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:08:31,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:08:31,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:08:31,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:08:31,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:08:31,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:08:31,115 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:08:31,115 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:08:31,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:08:31,115 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_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93a2fdd4bcf1d0c2ab8b4e49feeb28ec4b1782148939310f1cb0ffe97948195e [2022-11-21 16:08:31,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:08:31,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:08:31,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:08:31,444 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:08:31,444 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:08:31,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/clever.wvr.c [2022-11-21 16:08:34,639 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:08:34,845 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:08:34,845 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/sv-benchmarks/c/weaver/clever.wvr.c [2022-11-21 16:08:34,854 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/data/e2ae653fe/62abec07f8d54a2f8c4d344692fbc59b/FLAG55a0d4fa5 [2022-11-21 16:08:34,869 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/data/e2ae653fe/62abec07f8d54a2f8c4d344692fbc59b [2022-11-21 16:08:34,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:08:34,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:08:34,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:08:34,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:08:34,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:08:34,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:08:34" (1/1) ... [2022-11-21 16:08:34,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a0233f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:34, skipping insertion in model container [2022-11-21 16:08:34,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:08:34" (1/1) ... [2022-11-21 16:08:34,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:08:34,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:08:35,149 WARN L237 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_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/sv-benchmarks/c/weaver/clever.wvr.c[2133,2146] [2022-11-21 16:08:35,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:08:35,161 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:08:35,182 WARN L237 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_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/sv-benchmarks/c/weaver/clever.wvr.c[2133,2146] [2022-11-21 16:08:35,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:08:35,197 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:08:35,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35 WrapperNode [2022-11-21 16:08:35,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:08:35,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:08:35,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:08:35,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:08:35,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (1/1) ... [2022-11-21 16:08:35,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (1/1) ... [2022-11-21 16:08:35,232 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2022-11-21 16:08:35,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:08:35,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:08:35,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:08:35,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:08:35,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (1/1) ... [2022-11-21 16:08:35,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (1/1) ... [2022-11-21 16:08:35,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (1/1) ... [2022-11-21 16:08:35,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (1/1) ... [2022-11-21 16:08:35,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (1/1) ... [2022-11-21 16:08:35,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (1/1) ... [2022-11-21 16:08:35,255 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (1/1) ... [2022-11-21 16:08:35,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (1/1) ... [2022-11-21 16:08:35,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:08:35,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:08:35,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:08:35,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:08:35,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (1/1) ... [2022-11-21 16:08:35,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:08:35,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:08:35,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:08:35,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:08:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:08:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:08:35,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:08:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:08:35,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:08:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:08:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:08:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:08:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:08:35,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:08:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:08:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:08:35,362 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:08:35,536 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:08:35,549 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:08:35,802 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:08:35,811 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:08:35,811 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 16:08:35,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:08:35 BoogieIcfgContainer [2022-11-21 16:08:35,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:08:35,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:08:35,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:08:35,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:08:35,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:08:34" (1/3) ... [2022-11-21 16:08:35,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6192bff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:08:35, skipping insertion in model container [2022-11-21 16:08:35,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:08:35" (2/3) ... [2022-11-21 16:08:35,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6192bff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:08:35, skipping insertion in model container [2022-11-21 16:08:35,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:08:35" (3/3) ... [2022-11-21 16:08:35,840 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2022-11-21 16:08:35,854 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:08:35,864 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:08:35,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-21 16:08:35,864 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:08:35,963 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:08:36,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 132 transitions, 280 flow [2022-11-21 16:08:36,075 INFO L130 PetriNetUnfolder]: 9/130 cut-off events. [2022-11-21 16:08:36,075 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 16:08:36,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 130 events. 9/130 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-11-21 16:08:36,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 132 transitions, 280 flow [2022-11-21 16:08:36,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 111 transitions, 231 flow [2022-11-21 16:08:36,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:08:36,104 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=PETRI_NET, 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;@1e32371, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:08:36,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-21 16:08:36,126 INFO L130 PetriNetUnfolder]: 4/75 cut-off events. [2022-11-21 16:08:36,127 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:08:36,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:36,128 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:36,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-21 16:08:36,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:36,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2010664011, now seen corresponding path program 1 times [2022-11-21 16:08:36,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:36,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774120426] [2022-11-21 16:08:36,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:36,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:36,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:36,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774120426] [2022-11-21 16:08:36,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774120426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:36,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:36,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:08:36,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309901771] [2022-11-21 16:08:36,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:36,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:08:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:36,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:08:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:08:36,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 132 [2022-11-21 16:08:36,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 111 transitions, 231 flow. Second operand has 2 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:36,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:36,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 132 [2022-11-21 16:08:36,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:36,531 INFO L130 PetriNetUnfolder]: 3/106 cut-off events. [2022-11-21 16:08:36,531 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-21 16:08:36,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 106 events. 3/106 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 8/103 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2022-11-21 16:08:36,534 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 3 selfloop transitions, 0 changer transitions 2/106 dead transitions. [2022-11-21 16:08:36,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 227 flow [2022-11-21 16:08:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:08:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:08:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2022-11-21 16:08:36,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.946969696969697 [2022-11-21 16:08:36,549 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2022-11-21 16:08:36,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2022-11-21 16:08:36,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:36,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2022-11-21 16:08:36,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:36,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:36,562 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:36,564 INFO L175 Difference]: Start difference. First operand has 110 places, 111 transitions, 231 flow. Second operand 2 states and 250 transitions. [2022-11-21 16:08:36,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 227 flow [2022-11-21 16:08:36,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:08:36,573 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 212 flow [2022-11-21 16:08:36,575 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=212, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2022-11-21 16:08:36,579 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, -2 predicate places. [2022-11-21 16:08:36,579 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 212 flow [2022-11-21 16:08:36,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:36,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:36,580 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:36,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:08:36,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-21 16:08:36,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:36,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2010664972, now seen corresponding path program 1 times [2022-11-21 16:08:36,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:36,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794333] [2022-11-21 16:08:36,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:36,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:36,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:36,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794333] [2022-11-21 16:08:36,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:36,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:36,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:08:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254046667] [2022-11-21 16:08:36,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:36,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:08:36,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:36,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:08:36,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:08:36,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 132 [2022-11-21 16:08:36,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:36,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:36,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 132 [2022-11-21 16:08:36,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:37,166 INFO L130 PetriNetUnfolder]: 34/213 cut-off events. [2022-11-21 16:08:37,166 INFO L131 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-11-21 16:08:37,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 213 events. 34/213 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 770 event pairs, 5 based on Foata normal form. 1/176 useless extension candidates. Maximal degree in co-relation 300. Up to 28 conditions per place. [2022-11-21 16:08:37,169 INFO L137 encePairwiseOnDemand]: 122/132 looper letters, 21 selfloop transitions, 9 changer transitions 0/112 dead transitions. [2022-11-21 16:08:37,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 112 transitions, 294 flow [2022-11-21 16:08:37,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:08:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:08:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 745 transitions. [2022-11-21 16:08:37,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8062770562770563 [2022-11-21 16:08:37,183 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 745 transitions. [2022-11-21 16:08:37,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 745 transitions. [2022-11-21 16:08:37,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:37,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 745 transitions. [2022-11-21 16:08:37,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,192 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,192 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 212 flow. Second operand 7 states and 745 transitions. [2022-11-21 16:08:37,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 112 transitions, 294 flow [2022-11-21 16:08:37,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 112 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:08:37,196 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 228 flow [2022-11-21 16:08:37,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2022-11-21 16:08:37,198 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 1 predicate places. [2022-11-21 16:08:37,198 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 228 flow [2022-11-21 16:08:37,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:37,199 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:37,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:08:37,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-21 16:08:37,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:37,200 INFO L85 PathProgramCache]: Analyzing trace with hash -2093894964, now seen corresponding path program 1 times [2022-11-21 16:08:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:37,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118019790] [2022-11-21 16:08:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:37,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:37,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:37,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118019790] [2022-11-21 16:08:37,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118019790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:37,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:37,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:08:37,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417752446] [2022-11-21 16:08:37,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:37,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:08:37,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:37,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:08:37,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:08:37,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 132 [2022-11-21 16:08:37,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:37,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 132 [2022-11-21 16:08:37,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:37,460 INFO L130 PetriNetUnfolder]: 12/145 cut-off events. [2022-11-21 16:08:37,461 INFO L131 PetriNetUnfolder]: For 5/7 co-relation queries the response was YES. [2022-11-21 16:08:37,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 145 events. 12/145 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 367 event pairs, 5 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 202. Up to 15 conditions per place. [2022-11-21 16:08:37,462 INFO L137 encePairwiseOnDemand]: 126/132 looper letters, 12 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2022-11-21 16:08:37,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 103 transitions, 264 flow [2022-11-21 16:08:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:08:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:08:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-11-21 16:08:37,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8303030303030303 [2022-11-21 16:08:37,471 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-11-21 16:08:37,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-11-21 16:08:37,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:37,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-11-21 16:08:37,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,480 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,481 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 228 flow. Second operand 5 states and 548 transitions. [2022-11-21 16:08:37,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 103 transitions, 264 flow [2022-11-21 16:08:37,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 246 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:08:37,486 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 218 flow [2022-11-21 16:08:37,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2022-11-21 16:08:37,487 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, -2 predicate places. [2022-11-21 16:08:37,487 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 218 flow [2022-11-21 16:08:37,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:37,488 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:37,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:08:37,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-21 16:08:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:37,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2136195951, now seen corresponding path program 1 times [2022-11-21 16:08:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:37,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18199805] [2022-11-21 16:08:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:37,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:37,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:37,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18199805] [2022-11-21 16:08:37,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18199805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:37,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:37,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:08:37,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976757168] [2022-11-21 16:08:37,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:37,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:08:37,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:37,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:08:37,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:08:37,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 132 [2022-11-21 16:08:37,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:37,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 132 [2022-11-21 16:08:37,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:37,754 INFO L130 PetriNetUnfolder]: 23/179 cut-off events. [2022-11-21 16:08:37,754 INFO L131 PetriNetUnfolder]: For 2/5 co-relation queries the response was YES. [2022-11-21 16:08:37,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 179 events. 23/179 cut-off events. For 2/5 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 559 event pairs, 9 based on Foata normal form. 1/164 useless extension candidates. Maximal degree in co-relation 283. Up to 34 conditions per place. [2022-11-21 16:08:37,762 INFO L137 encePairwiseOnDemand]: 124/132 looper letters, 21 selfloop transitions, 6 changer transitions 0/114 dead transitions. [2022-11-21 16:08:37,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 114 transitions, 303 flow [2022-11-21 16:08:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:08:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:08:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2022-11-21 16:08:37,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8696969696969697 [2022-11-21 16:08:37,765 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2022-11-21 16:08:37,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2022-11-21 16:08:37,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:37,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2022-11-21 16:08:37,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,775 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 218 flow. Second operand 5 states and 574 transitions. [2022-11-21 16:08:37,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 114 transitions, 303 flow [2022-11-21 16:08:37,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 114 transitions, 293 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:08:37,779 INFO L231 Difference]: Finished difference. Result has 112 places, 106 transitions, 252 flow [2022-11-21 16:08:37,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=112, PETRI_TRANSITIONS=106} [2022-11-21 16:08:37,781 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2022-11-21 16:08:37,782 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 106 transitions, 252 flow [2022-11-21 16:08:37,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:37,785 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:37,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:08:37,786 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-21 16:08:37,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:37,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1950227618, now seen corresponding path program 1 times [2022-11-21 16:08:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:37,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78780539] [2022-11-21 16:08:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:37,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:37,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:37,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78780539] [2022-11-21 16:08:37,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78780539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:37,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:37,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:08:37,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579043794] [2022-11-21 16:08:37,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:37,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:08:37,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:08:37,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:08:37,976 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 132 [2022-11-21 16:08:37,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 106 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:37,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:37,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 132 [2022-11-21 16:08:37,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:38,140 INFO L130 PetriNetUnfolder]: 59/280 cut-off events. [2022-11-21 16:08:38,140 INFO L131 PetriNetUnfolder]: For 24/30 co-relation queries the response was YES. [2022-11-21 16:08:38,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 280 events. 59/280 cut-off events. For 24/30 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1187 event pairs, 10 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 445. Up to 52 conditions per place. [2022-11-21 16:08:38,143 INFO L137 encePairwiseOnDemand]: 122/132 looper letters, 21 selfloop transitions, 9 changer transitions 0/114 dead transitions. [2022-11-21 16:08:38,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 114 transitions, 331 flow [2022-11-21 16:08:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:08:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:08:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 745 transitions. [2022-11-21 16:08:38,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8062770562770563 [2022-11-21 16:08:38,147 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 745 transitions. [2022-11-21 16:08:38,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 745 transitions. [2022-11-21 16:08:38,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:38,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 745 transitions. [2022-11-21 16:08:38,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:38,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:38,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:38,155 INFO L175 Difference]: Start difference. First operand has 112 places, 106 transitions, 252 flow. Second operand 7 states and 745 transitions. [2022-11-21 16:08:38,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 114 transitions, 331 flow [2022-11-21 16:08:38,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 114 transitions, 331 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:08:38,159 INFO L231 Difference]: Finished difference. Result has 117 places, 105 transitions, 268 flow [2022-11-21 16:08:38,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=117, PETRI_TRANSITIONS=105} [2022-11-21 16:08:38,163 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 7 predicate places. [2022-11-21 16:08:38,163 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 105 transitions, 268 flow [2022-11-21 16:08:38,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:38,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:38,164 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:38,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:08:38,165 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-21 16:08:38,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:38,169 INFO L85 PathProgramCache]: Analyzing trace with hash -327513649, now seen corresponding path program 1 times [2022-11-21 16:08:38,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:38,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938538939] [2022-11-21 16:08:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:38,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:38,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:38,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938538939] [2022-11-21 16:08:38,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938538939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:38,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:08:38,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:08:38,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997945545] [2022-11-21 16:08:38,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:38,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:08:38,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:38,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:08:38,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:08:38,301 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 132 [2022-11-21 16:08:38,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 105 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:38,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:38,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 132 [2022-11-21 16:08:38,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:38,388 INFO L130 PetriNetUnfolder]: 18/155 cut-off events. [2022-11-21 16:08:38,388 INFO L131 PetriNetUnfolder]: For 25/26 co-relation queries the response was YES. [2022-11-21 16:08:38,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 155 events. 18/155 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 443 event pairs, 4 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 236. Up to 21 conditions per place. [2022-11-21 16:08:38,390 INFO L137 encePairwiseOnDemand]: 126/132 looper letters, 10 selfloop transitions, 5 changer transitions 4/105 dead transitions. [2022-11-21 16:08:38,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 105 transitions, 303 flow [2022-11-21 16:08:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:08:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:08:38,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-11-21 16:08:38,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8303030303030303 [2022-11-21 16:08:38,392 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-11-21 16:08:38,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-11-21 16:08:38,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:38,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-11-21 16:08:38,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:38,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:38,397 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:38,397 INFO L175 Difference]: Start difference. First operand has 117 places, 105 transitions, 268 flow. Second operand 5 states and 548 transitions. [2022-11-21 16:08:38,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 105 transitions, 303 flow [2022-11-21 16:08:38,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 105 transitions, 285 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:08:38,401 INFO L231 Difference]: Finished difference. Result has 114 places, 101 transitions, 251 flow [2022-11-21 16:08:38,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=114, PETRI_TRANSITIONS=101} [2022-11-21 16:08:38,405 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 4 predicate places. [2022-11-21 16:08:38,405 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 101 transitions, 251 flow [2022-11-21 16:08:38,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:38,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:38,406 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:38,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:08:38,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-21 16:08:38,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2137003194, now seen corresponding path program 1 times [2022-11-21 16:08:38,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:38,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409956604] [2022-11-21 16:08:38,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:38,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:38,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:38,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409956604] [2022-11-21 16:08:38,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409956604] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:08:38,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588277161] [2022-11-21 16:08:38,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:38,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:08:38,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:08:38,524 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:08:38,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:08:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:38,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:08:38,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:08:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:38,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:08:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:38,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588277161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:08:38,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:08:38,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:08:38,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677769367] [2022-11-21 16:08:38,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:08:38,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:08:38,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:08:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:08:38,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 132 [2022-11-21 16:08:38,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 101 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 111.41666666666667) internal successors, (1337), 12 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:38,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:38,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 132 [2022-11-21 16:08:38,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:39,079 INFO L130 PetriNetUnfolder]: 53/331 cut-off events. [2022-11-21 16:08:39,079 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-21 16:08:39,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 331 events. 53/331 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1299 event pairs, 2 based on Foata normal form. 6/314 useless extension candidates. Maximal degree in co-relation 616. Up to 42 conditions per place. [2022-11-21 16:08:39,082 INFO L137 encePairwiseOnDemand]: 123/132 looper letters, 41 selfloop transitions, 23 changer transitions 0/147 dead transitions. [2022-11-21 16:08:39,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 147 transitions, 537 flow [2022-11-21 16:08:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:08:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:08:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2029 transitions. [2022-11-21 16:08:39,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8539562289562289 [2022-11-21 16:08:39,088 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2029 transitions. [2022-11-21 16:08:39,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2029 transitions. [2022-11-21 16:08:39,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:39,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2029 transitions. [2022-11-21 16:08:39,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.72222222222223) internal successors, (2029), 18 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:39,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 132.0) internal successors, (2508), 19 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:39,099 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 132.0) internal successors, (2508), 19 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:39,099 INFO L175 Difference]: Start difference. First operand has 114 places, 101 transitions, 251 flow. Second operand 18 states and 2029 transitions. [2022-11-21 16:08:39,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 147 transitions, 537 flow [2022-11-21 16:08:39,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 147 transitions, 527 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:08:39,105 INFO L231 Difference]: Finished difference. Result has 128 places, 116 transitions, 377 flow [2022-11-21 16:08:39,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=377, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2022-11-21 16:08:39,106 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 18 predicate places. [2022-11-21 16:08:39,106 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 377 flow [2022-11-21 16:08:39,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 111.41666666666667) internal successors, (1337), 12 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:39,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:39,108 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:39,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:08:39,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 16:08:39,314 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-21 16:08:39,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:39,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1822589926, now seen corresponding path program 1 times [2022-11-21 16:08:39,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:39,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984451788] [2022-11-21 16:08:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:39,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:39,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:39,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984451788] [2022-11-21 16:08:39,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984451788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:08:39,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150788444] [2022-11-21 16:08:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:39,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:08:39,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:08:39,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:08:39,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:08:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:39,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:08:39,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:08:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:39,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:08:39,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150788444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:08:39,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:08:39,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:08:39,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037446845] [2022-11-21 16:08:39,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:08:39,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:08:39,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:39,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:08:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:08:39,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 132 [2022-11-21 16:08:39,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 377 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:39,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:39,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 132 [2022-11-21 16:08:39,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:39,699 INFO L130 PetriNetUnfolder]: 49/329 cut-off events. [2022-11-21 16:08:39,699 INFO L131 PetriNetUnfolder]: For 166/166 co-relation queries the response was YES. [2022-11-21 16:08:39,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 329 events. 49/329 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1234 event pairs, 2 based on Foata normal form. 8/312 useless extension candidates. Maximal degree in co-relation 654. Up to 50 conditions per place. [2022-11-21 16:08:39,702 INFO L137 encePairwiseOnDemand]: 125/132 looper letters, 22 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2022-11-21 16:08:39,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 467 flow [2022-11-21 16:08:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:08:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:08:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 791 transitions. [2022-11-21 16:08:39,705 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8560606060606061 [2022-11-21 16:08:39,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 791 transitions. [2022-11-21 16:08:39,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 791 transitions. [2022-11-21 16:08:39,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:39,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 791 transitions. [2022-11-21 16:08:39,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:39,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:39,711 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:39,711 INFO L175 Difference]: Start difference. First operand has 128 places, 116 transitions, 377 flow. Second operand 7 states and 791 transitions. [2022-11-21 16:08:39,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 467 flow [2022-11-21 16:08:39,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 122 transitions, 415 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-11-21 16:08:39,718 INFO L231 Difference]: Finished difference. Result has 123 places, 113 transitions, 341 flow [2022-11-21 16:08:39,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=341, PETRI_PLACES=123, PETRI_TRANSITIONS=113} [2022-11-21 16:08:39,721 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 13 predicate places. [2022-11-21 16:08:39,721 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 113 transitions, 341 flow [2022-11-21 16:08:39,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:39,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:08:39,722 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:39,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:08:39,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:08:39,932 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-21 16:08:39,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:08:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1661858863, now seen corresponding path program 2 times [2022-11-21 16:08:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:08:39,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193991739] [2022-11-21 16:08:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:08:39,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:08:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:08:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:08:40,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:08:40,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193991739] [2022-11-21 16:08:40,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193991739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:08:40,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752520308] [2022-11-21 16:08:40,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:08:40,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:08:40,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:08:40,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:08:40,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:08:40,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:08:40,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:08:40,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:08:40,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:08:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:08:40,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:08:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 16:08:40,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752520308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:08:40,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:08:40,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-21 16:08:40,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017736909] [2022-11-21 16:08:40,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:08:40,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 16:08:40,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:08:40,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 16:08:40,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-21 16:08:40,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 132 [2022-11-21 16:08:40,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 113 transitions, 341 flow. Second operand has 16 states, 16 states have (on average 105.3125) internal successors, (1685), 16 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:40,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:08:40,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 132 [2022-11-21 16:08:40,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:08:41,010 INFO L130 PetriNetUnfolder]: 113/566 cut-off events. [2022-11-21 16:08:41,011 INFO L131 PetriNetUnfolder]: For 217/217 co-relation queries the response was YES. [2022-11-21 16:08:41,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 566 events. 113/566 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2479 event pairs, 4 based on Foata normal form. 6/526 useless extension candidates. Maximal degree in co-relation 1125. Up to 46 conditions per place. [2022-11-21 16:08:41,014 INFO L137 encePairwiseOnDemand]: 121/132 looper letters, 0 selfloop transitions, 0 changer transitions 175/175 dead transitions. [2022-11-21 16:08:41,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 175 transitions, 728 flow [2022-11-21 16:08:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:08:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-21 16:08:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2344 transitions. [2022-11-21 16:08:41,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8071625344352618 [2022-11-21 16:08:41,020 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2344 transitions. [2022-11-21 16:08:41,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2344 transitions. [2022-11-21 16:08:41,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:08:41,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2344 transitions. [2022-11-21 16:08:41,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 106.54545454545455) internal successors, (2344), 22 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:41,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 132.0) internal successors, (3036), 23 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:41,034 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 132.0) internal successors, (3036), 23 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:41,034 INFO L175 Difference]: Start difference. First operand has 123 places, 113 transitions, 341 flow. Second operand 22 states and 2344 transitions. [2022-11-21 16:08:41,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 175 transitions, 728 flow [2022-11-21 16:08:41,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 175 transitions, 696 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-21 16:08:41,039 INFO L231 Difference]: Finished difference. Result has 135 places, 0 transitions, 0 flow [2022-11-21 16:08:41,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=135, PETRI_TRANSITIONS=0} [2022-11-21 16:08:41,040 INFO L288 CegarLoopForPetriNet]: 110 programPoint places, 25 predicate places. [2022-11-21 16:08:41,041 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 0 transitions, 0 flow [2022-11-21 16:08:41,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 105.3125) internal successors, (1685), 16 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:08:41,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2022-11-21 16:08:41,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-11-21 16:08:41,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-11-21 16:08:41,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-11-21 16:08:41,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-11-21 16:08:41,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-11-21 16:08:41,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2022-11-21 16:08:41,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2022-11-21 16:08:41,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2022-11-21 16:08:41,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2022-11-21 16:08:41,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-11-21 16:08:41,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-11-21 16:08:41,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-11-21 16:08:41,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-11-21 16:08:41,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-21 16:08:41,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:08:41,254 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:08:41,259 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 16:08:41,259 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 16:08:41,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 04:08:41 BasicIcfg [2022-11-21 16:08:41,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 16:08:41,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 16:08:41,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 16:08:41,264 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 16:08:41,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:08:35" (3/4) ... [2022-11-21 16:08:41,267 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 16:08:41,273 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-21 16:08:41,274 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-21 16:08:41,280 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-21 16:08:41,281 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-21 16:08:41,281 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 16:08:41,281 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 16:08:41,313 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 16:08:41,313 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 16:08:41,314 INFO L158 Benchmark]: Toolchain (without parser) took 6441.14ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 120.1MB in the beginning and 61.6MB in the end (delta: 58.5MB). Peak memory consumption was 91.2MB. Max. memory is 16.1GB. [2022-11-21 16:08:41,314 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:08:41,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.81ms. Allocated memory is still 159.4MB. Free memory was 120.1MB in the beginning and 124.5MB in the end (delta: -4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 16:08:41,315 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.52ms. Allocated memory is still 159.4MB. Free memory was 124.5MB in the beginning and 122.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:08:41,315 INFO L158 Benchmark]: Boogie Preprocessor took 26.16ms. Allocated memory is still 159.4MB. Free memory was 122.4MB in the beginning and 121.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 16:08:41,316 INFO L158 Benchmark]: RCFGBuilder took 554.31ms. Allocated memory is still 159.4MB. Free memory was 121.0MB in the beginning and 106.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-21 16:08:41,316 INFO L158 Benchmark]: TraceAbstraction took 5441.70ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 105.6MB in the beginning and 64.7MB in the end (delta: 40.9MB). Peak memory consumption was 76.1MB. Max. memory is 16.1GB. [2022-11-21 16:08:41,316 INFO L158 Benchmark]: Witness Printer took 49.60ms. Allocated memory is still 192.9MB. Free memory was 64.7MB in the beginning and 61.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 16:08:41,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.81ms. Allocated memory is still 159.4MB. Free memory was 120.1MB in the beginning and 124.5MB in the end (delta: -4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.52ms. Allocated memory is still 159.4MB. Free memory was 124.5MB in the beginning and 122.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.16ms. Allocated memory is still 159.4MB. Free memory was 122.4MB in the beginning and 121.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 554.31ms. Allocated memory is still 159.4MB. Free memory was 121.0MB in the beginning and 106.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5441.70ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 105.6MB in the beginning and 64.7MB in the end (delta: 40.9MB). Peak memory consumption was 76.1MB. Max. memory is 16.1GB. * Witness Printer took 49.60ms. Allocated memory is still 192.9MB. Free memory was 64.7MB in the beginning and 61.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 161 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 383 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 383 mSDsluCounter, 172 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 117 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 519 IncrementalHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 55 mSDtfsCounter, 519 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 507 GetRequests, 413 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=377occurred in iteration=7, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 875 NumberOfCodeBlocks, 839 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1034 ConstructedInterpolants, 0 QuantifiedInterpolants, 2030 SizeOfPredicates, 10 NumberOfNonLiveVariables, 432 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 123/266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 16:08:41,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5ce16b3-b390-48db-bc43-eccec0b9ee1f/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE