./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro --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 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 --- 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-8393723 [2022-11-18 18:47:40,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:47:40,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:47:40,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:47:40,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:47:40,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:47:40,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:47:40,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:47:40,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:47:40,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:47:41,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:47:41,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:47:41,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:47:41,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:47:41,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:47:41,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:47:41,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:47:41,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:47:41,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:47:41,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:47:41,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:47:41,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:47:41,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:47:41,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:47:41,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:47:41,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:47:41,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:47:41,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:47:41,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:47:41,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:47:41,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:47:41,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:47:41,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:47:41,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:47:41,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:47:41,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:47:41,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:47:41,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:47:41,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:47:41,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:47:41,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:47:41,039 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:47:41,068 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:47:41,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:47:41,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:47:41,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:47:41,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:47:41,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:47:41,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:47:41,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:47:41,072 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:47:41,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:47:41,074 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:47:41,074 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:47:41,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:47:41,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:47:41,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:47:41,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:47:41,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:47:41,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:47:41,076 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:47:41,076 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:47:41,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:47:41,076 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:47:41,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:47:41,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:47:41,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:47:41,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:47:41,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:47:41,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:47:41,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:47:41,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:47:41,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:47:41,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:47:41,081 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:47:41,081 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:47:41,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:47:41,081 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_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4351dece6a672e511bbcb86915e62fc8a7361763ad7ab88f2e640b2d00ea50a7 [2022-11-18 18:47:41,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:47:41,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:47:41,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:47:41,448 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:47:41,448 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:47:41,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/stack_longer-1.i [2022-11-18 18:47:41,529 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/data/a05912c73/b4d08ed0b108440dbe2c4b6896f9664e/FLAGa54d70dda [2022-11-18 18:47:42,186 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:47:42,187 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/sv-benchmarks/c/pthread/stack_longer-1.i [2022-11-18 18:47:42,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/data/a05912c73/b4d08ed0b108440dbe2c4b6896f9664e/FLAGa54d70dda [2022-11-18 18:47:42,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/data/a05912c73/b4d08ed0b108440dbe2c4b6896f9664e [2022-11-18 18:47:42,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:47:42,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:47:42,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:47:42,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:47:42,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:47:42,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:47:42" (1/1) ... [2022-11-18 18:47:42,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646a0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:42, skipping insertion in model container [2022-11-18 18:47:42,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:47:42" (1/1) ... [2022-11-18 18:47:42,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:47:42,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:47:43,012 WARN L234 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_6bfe4234-d961-4676-b12b-1c0eea17dd69/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2022-11-18 18:47:43,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:47:43,047 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:47:43,084 WARN L234 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_6bfe4234-d961-4676-b12b-1c0eea17dd69/sv-benchmarks/c/pthread/stack_longer-1.i[41527,41540] [2022-11-18 18:47:43,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:47:43,148 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:47:43,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43 WrapperNode [2022-11-18 18:47:43,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:47:43,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:47:43,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:47:43,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:47:43,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (1/1) ... [2022-11-18 18:47:43,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (1/1) ... [2022-11-18 18:47:43,204 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 163 [2022-11-18 18:47:43,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:47:43,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:47:43,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:47:43,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:47:43,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (1/1) ... [2022-11-18 18:47:43,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (1/1) ... [2022-11-18 18:47:43,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (1/1) ... [2022-11-18 18:47:43,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (1/1) ... [2022-11-18 18:47:43,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (1/1) ... [2022-11-18 18:47:43,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (1/1) ... [2022-11-18 18:47:43,234 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (1/1) ... [2022-11-18 18:47:43,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (1/1) ... [2022-11-18 18:47:43,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:47:43,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:47:43,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:47:43,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:47:43,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (1/1) ... [2022-11-18 18:47:43,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:47:43,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:43,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:47:43,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:47:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 18:47:43,352 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 18:47:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 18:47:43,353 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 18:47:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:47:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:47:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:47:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:47:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:47:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:47:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:47:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:47:43,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:47:43,358 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:47:43,511 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:47:43,514 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:47:43,971 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:47:43,980 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:47:43,980 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:47:43,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:47:43 BoogieIcfgContainer [2022-11-18 18:47:43,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:47:43,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:47:43,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:47:44,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:47:44,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:47:42" (1/3) ... [2022-11-18 18:47:44,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0255bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:47:44, skipping insertion in model container [2022-11-18 18:47:44,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:43" (2/3) ... [2022-11-18 18:47:44,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0255bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:47:44, skipping insertion in model container [2022-11-18 18:47:44,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:47:43" (3/3) ... [2022-11-18 18:47:44,006 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2022-11-18 18:47:44,017 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:47:44,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:47:44,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 18:47:44,029 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:47:44,164 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 18:47:44,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 193 transitions, 402 flow [2022-11-18 18:47:44,315 INFO L130 PetriNetUnfolder]: 10/191 cut-off events. [2022-11-18 18:47:44,324 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:47:44,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 191 events. 10/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 495 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-11-18 18:47:44,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 193 transitions, 402 flow [2022-11-18 18:47:44,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 181 transitions, 371 flow [2022-11-18 18:47:44,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:47:44,381 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;@65a4894f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:47:44,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 18:47:44,431 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-11-18 18:47:44,434 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:47:44,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:44,436 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] [2022-11-18 18:47:44,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1006234936, now seen corresponding path program 1 times [2022-11-18 18:47:44,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:44,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238058074] [2022-11-18 18:47:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:44,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:44,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238058074] [2022-11-18 18:47:44,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238058074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:44,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:44,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:44,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595672283] [2022-11-18 18:47:44,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:45,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:47:45,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:45,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:47:45,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:47:45,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-18 18:47:45,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 181 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:45,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:45,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-18 18:47:45,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:45,294 INFO L130 PetriNetUnfolder]: 28/363 cut-off events. [2022-11-18 18:47:45,295 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 18:47:45,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 363 events. 28/363 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1625 event pairs, 10 based on Foata normal form. 41/369 useless extension candidates. Maximal degree in co-relation 394. Up to 36 conditions per place. [2022-11-18 18:47:45,301 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 19 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2022-11-18 18:47:45,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 181 transitions, 426 flow [2022-11-18 18:47:45,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:47:45,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:47:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 897 transitions. [2022-11-18 18:47:45,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9295336787564766 [2022-11-18 18:47:45,321 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 897 transitions. [2022-11-18 18:47:45,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 897 transitions. [2022-11-18 18:47:45,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:45,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 897 transitions. [2022-11-18 18:47:45,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.4) internal successors, (897), 5 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:45,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:45,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:45,345 INFO L175 Difference]: Start difference. First operand has 178 places, 181 transitions, 371 flow. Second operand 5 states and 897 transitions. [2022-11-18 18:47:45,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 181 transitions, 426 flow [2022-11-18 18:47:45,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 181 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:47:45,355 INFO L231 Difference]: Finished difference. Result has 178 places, 175 transitions, 380 flow [2022-11-18 18:47:45,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=178, PETRI_TRANSITIONS=175} [2022-11-18 18:47:45,362 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 0 predicate places. [2022-11-18 18:47:45,362 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 175 transitions, 380 flow [2022-11-18 18:47:45,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:45,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:45,364 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] [2022-11-18 18:47:45,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:47:45,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:45,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:45,366 INFO L85 PathProgramCache]: Analyzing trace with hash -285957395, now seen corresponding path program 1 times [2022-11-18 18:47:45,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:45,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866314946] [2022-11-18 18:47:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:45,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:45,531 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:47:45,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:45,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866314946] [2022-11-18 18:47:45,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866314946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:45,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:45,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:45,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439027449] [2022-11-18 18:47:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:45,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:47:45,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:45,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:47:45,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:47:45,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-18 18:47:45,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 175 transitions, 380 flow. Second operand has 4 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:45,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:45,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-18 18:47:45,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:45,702 INFO L130 PetriNetUnfolder]: 23/266 cut-off events. [2022-11-18 18:47:45,703 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-18 18:47:45,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 266 events. 23/266 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1081 event pairs, 3 based on Foata normal form. 2/249 useless extension candidates. Maximal degree in co-relation 301. Up to 21 conditions per place. [2022-11-18 18:47:45,709 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 12 selfloop transitions, 8 changer transitions 0/178 dead transitions. [2022-11-18 18:47:45,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 178 transitions, 427 flow [2022-11-18 18:47:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:47:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:47:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 873 transitions. [2022-11-18 18:47:45,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9046632124352332 [2022-11-18 18:47:45,715 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 873 transitions. [2022-11-18 18:47:45,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 873 transitions. [2022-11-18 18:47:45,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:45,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 873 transitions. [2022-11-18 18:47:45,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:45,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:45,724 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:45,724 INFO L175 Difference]: Start difference. First operand has 178 places, 175 transitions, 380 flow. Second operand 5 states and 873 transitions. [2022-11-18 18:47:45,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 178 transitions, 427 flow [2022-11-18 18:47:45,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 178 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:47:45,733 INFO L231 Difference]: Finished difference. Result has 181 places, 175 transitions, 398 flow [2022-11-18 18:47:45,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=181, PETRI_TRANSITIONS=175} [2022-11-18 18:47:45,735 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 3 predicate places. [2022-11-18 18:47:45,735 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 175 transitions, 398 flow [2022-11-18 18:47:45,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:45,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:45,737 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-11-18 18:47:45,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:47:45,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash -274744097, now seen corresponding path program 1 times [2022-11-18 18:47:45,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:45,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512977784] [2022-11-18 18:47:45,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:45,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:45,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:45,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512977784] [2022-11-18 18:47:45,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512977784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:47:45,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734742655] [2022-11-18 18:47:45,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:45,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:47:45,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:45,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:47:45,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:47:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:46,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:47:46,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:47:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:46,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:47:46,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734742655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:46,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:47:46,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:47:46,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216236136] [2022-11-18 18:47:46,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:46,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:47:46,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:46,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:47:46,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:47:46,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-18 18:47:46,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 175 transitions, 398 flow. Second operand has 6 states, 6 states have (on average 173.33333333333334) internal successors, (1040), 6 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:46,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:46,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-18 18:47:46,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:46,302 INFO L130 PetriNetUnfolder]: 24/311 cut-off events. [2022-11-18 18:47:46,302 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-18 18:47:46,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 311 events. 24/311 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1185 event pairs, 2 based on Foata normal form. 2/289 useless extension candidates. Maximal degree in co-relation 361. Up to 15 conditions per place. [2022-11-18 18:47:46,305 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 17 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2022-11-18 18:47:46,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 181 transitions, 459 flow [2022-11-18 18:47:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:47:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:47:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1221 transitions. [2022-11-18 18:47:46,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9037749814951888 [2022-11-18 18:47:46,310 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1221 transitions. [2022-11-18 18:47:46,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1221 transitions. [2022-11-18 18:47:46,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:46,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1221 transitions. [2022-11-18 18:47:46,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.42857142857142) internal successors, (1221), 7 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:46,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:46,320 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 193.0) internal successors, (1544), 8 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:46,320 INFO L175 Difference]: Start difference. First operand has 181 places, 175 transitions, 398 flow. Second operand 7 states and 1221 transitions. [2022-11-18 18:47:46,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 181 transitions, 459 flow [2022-11-18 18:47:46,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 181 transitions, 447 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:47:46,326 INFO L231 Difference]: Finished difference. Result has 183 places, 174 transitions, 394 flow [2022-11-18 18:47:46,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=394, PETRI_PLACES=183, PETRI_TRANSITIONS=174} [2022-11-18 18:47:46,327 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 5 predicate places. [2022-11-18 18:47:46,328 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 174 transitions, 394 flow [2022-11-18 18:47:46,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.33333333333334) internal successors, (1040), 6 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:46,329 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:46,329 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] [2022-11-18 18:47:46,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:47:46,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:47:46,536 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:46,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:46,537 INFO L85 PathProgramCache]: Analyzing trace with hash 638427269, now seen corresponding path program 1 times [2022-11-18 18:47:46,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:46,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402060698] [2022-11-18 18:47:46,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:46,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:46,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:46,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402060698] [2022-11-18 18:47:46,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402060698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:46,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:46,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:47:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613811558] [2022-11-18 18:47:46,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:46,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:47:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:46,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:47:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:47:46,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 193 [2022-11-18 18:47:46,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 174 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:46,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:46,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 193 [2022-11-18 18:47:46,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:47,427 INFO L130 PetriNetUnfolder]: 379/2569 cut-off events. [2022-11-18 18:47:47,427 INFO L131 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2022-11-18 18:47:47,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 2569 events. 379/2569 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 21471 event pairs, 140 based on Foata normal form. 0/2260 useless extension candidates. Maximal degree in co-relation 2622. Up to 347 conditions per place. [2022-11-18 18:47:47,449 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 58 selfloop transitions, 13 changer transitions 1/223 dead transitions. [2022-11-18 18:47:47,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 223 transitions, 644 flow [2022-11-18 18:47:47,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:47:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:47:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1373 transitions. [2022-11-18 18:47:47,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8892487046632125 [2022-11-18 18:47:47,455 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1373 transitions. [2022-11-18 18:47:47,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1373 transitions. [2022-11-18 18:47:47,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:47,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1373 transitions. [2022-11-18 18:47:47,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.625) internal successors, (1373), 8 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:47,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:47,465 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:47,465 INFO L175 Difference]: Start difference. First operand has 183 places, 174 transitions, 394 flow. Second operand 8 states and 1373 transitions. [2022-11-18 18:47:47,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 223 transitions, 644 flow [2022-11-18 18:47:47,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 223 transitions, 633 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 18:47:47,476 INFO L231 Difference]: Finished difference. Result has 191 places, 185 transitions, 481 flow [2022-11-18 18:47:47,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=481, PETRI_PLACES=191, PETRI_TRANSITIONS=185} [2022-11-18 18:47:47,478 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 13 predicate places. [2022-11-18 18:47:47,478 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 185 transitions, 481 flow [2022-11-18 18:47:47,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:47,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:47,479 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] [2022-11-18 18:47:47,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:47:47,479 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:47,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:47,480 INFO L85 PathProgramCache]: Analyzing trace with hash -798297635, now seen corresponding path program 1 times [2022-11-18 18:47:47,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:47,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415397772] [2022-11-18 18:47:47,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:47,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:47,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:47,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:47,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415397772] [2022-11-18 18:47:47,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415397772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:47,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:47,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:47,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690493346] [2022-11-18 18:47:47,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:47,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:47:47,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:47,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:47:47,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:47:47,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-18 18:47:47,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 185 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:47,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:47,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-18 18:47:47,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:48,219 INFO L130 PetriNetUnfolder]: 226/2042 cut-off events. [2022-11-18 18:47:48,220 INFO L131 PetriNetUnfolder]: For 447/529 co-relation queries the response was YES. [2022-11-18 18:47:48,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 2042 events. 226/2042 cut-off events. For 447/529 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 15571 event pairs, 118 based on Foata normal form. 21/1855 useless extension candidates. Maximal degree in co-relation 2357. Up to 335 conditions per place. [2022-11-18 18:47:48,236 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 33 selfloop transitions, 6 changer transitions 0/201 dead transitions. [2022-11-18 18:47:48,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 201 transitions, 604 flow [2022-11-18 18:47:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:47:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:47:48,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 869 transitions. [2022-11-18 18:47:48,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.900518134715026 [2022-11-18 18:47:48,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 869 transitions. [2022-11-18 18:47:48,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 869 transitions. [2022-11-18 18:47:48,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:48,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 869 transitions. [2022-11-18 18:47:48,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:48,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:48,246 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:48,246 INFO L175 Difference]: Start difference. First operand has 191 places, 185 transitions, 481 flow. Second operand 5 states and 869 transitions. [2022-11-18 18:47:48,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 201 transitions, 604 flow [2022-11-18 18:47:48,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 201 transitions, 604 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:47:48,254 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 515 flow [2022-11-18 18:47:48,254 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=515, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2022-11-18 18:47:48,255 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 20 predicate places. [2022-11-18 18:47:48,255 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 515 flow [2022-11-18 18:47:48,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:48,256 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:48,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:48,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:47:48,257 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:48,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:48,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2063574152, now seen corresponding path program 1 times [2022-11-18 18:47:48,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:48,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511381186] [2022-11-18 18:47:48,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:48,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:48,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:48,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511381186] [2022-11-18 18:47:48,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511381186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:48,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:48,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:48,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039165547] [2022-11-18 18:47:48,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:48,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:47:48,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:47:48,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:47:48,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-18 18:47:48,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:48,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:48,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-18 18:47:48,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:48,756 INFO L130 PetriNetUnfolder]: 74/1326 cut-off events. [2022-11-18 18:47:48,757 INFO L131 PetriNetUnfolder]: For 207/262 co-relation queries the response was YES. [2022-11-18 18:47:48,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1900 conditions, 1326 events. 74/1326 cut-off events. For 207/262 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8521 event pairs, 19 based on Foata normal form. 2/1225 useless extension candidates. Maximal degree in co-relation 1485. Up to 102 conditions per place. [2022-11-18 18:47:48,772 INFO L137 encePairwiseOnDemand]: 186/193 looper letters, 19 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2022-11-18 18:47:48,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 196 transitions, 585 flow [2022-11-18 18:47:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:47:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:47:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 881 transitions. [2022-11-18 18:47:48,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9129533678756476 [2022-11-18 18:47:48,776 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 881 transitions. [2022-11-18 18:47:48,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 881 transitions. [2022-11-18 18:47:48,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:48,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 881 transitions. [2022-11-18 18:47:48,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:48,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:48,783 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:48,783 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 515 flow. Second operand 5 states and 881 transitions. [2022-11-18 18:47:48,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 196 transitions, 585 flow [2022-11-18 18:47:48,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 196 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:47:48,792 INFO L231 Difference]: Finished difference. Result has 204 places, 190 transitions, 545 flow [2022-11-18 18:47:48,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=545, PETRI_PLACES=204, PETRI_TRANSITIONS=190} [2022-11-18 18:47:48,796 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 26 predicate places. [2022-11-18 18:47:48,796 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 190 transitions, 545 flow [2022-11-18 18:47:48,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:48,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:48,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:48,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:47:48,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:48,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash -647601274, now seen corresponding path program 1 times [2022-11-18 18:47:48,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:48,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214941508] [2022-11-18 18:47:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:48,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:48,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:48,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214941508] [2022-11-18 18:47:48,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214941508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:48,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:48,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:48,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321042602] [2022-11-18 18:47:48,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:48,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:48,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:48,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-18 18:47:48,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 190 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:48,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:48,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-18 18:47:48,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:49,252 INFO L130 PetriNetUnfolder]: 47/1174 cut-off events. [2022-11-18 18:47:49,253 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2022-11-18 18:47:49,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 1174 events. 47/1174 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6568 event pairs, 12 based on Foata normal form. 12/1129 useless extension candidates. Maximal degree in co-relation 1407. Up to 42 conditions per place. [2022-11-18 18:47:49,261 INFO L137 encePairwiseOnDemand]: 189/193 looper letters, 12 selfloop transitions, 4 changer transitions 0/189 dead transitions. [2022-11-18 18:47:49,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 189 transitions, 562 flow [2022-11-18 18:47:49,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:47:49,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2022-11-18 18:47:49,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.917098445595855 [2022-11-18 18:47:49,265 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2022-11-18 18:47:49,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2022-11-18 18:47:49,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:49,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2022-11-18 18:47:49,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:49,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:49,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:49,272 INFO L175 Difference]: Start difference. First operand has 204 places, 190 transitions, 545 flow. Second operand 3 states and 531 transitions. [2022-11-18 18:47:49,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 189 transitions, 562 flow [2022-11-18 18:47:49,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 189 transitions, 554 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 18:47:49,280 INFO L231 Difference]: Finished difference. Result has 203 places, 187 transitions, 523 flow [2022-11-18 18:47:49,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=523, PETRI_PLACES=203, PETRI_TRANSITIONS=187} [2022-11-18 18:47:49,281 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 25 predicate places. [2022-11-18 18:47:49,282 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 187 transitions, 523 flow [2022-11-18 18:47:49,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:49,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:49,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:49,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:47:49,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:49,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2133832321, now seen corresponding path program 1 times [2022-11-18 18:47:49,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:49,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434422496] [2022-11-18 18:47:49,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:49,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:49,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:49,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434422496] [2022-11-18 18:47:49,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434422496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:49,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:49,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:47:49,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729401113] [2022-11-18 18:47:49,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:49,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:47:49,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:49,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:47:49,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:47:49,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-18 18:47:49,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 187 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:49,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:49,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-18 18:47:49,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:49,932 INFO L130 PetriNetUnfolder]: 105/1511 cut-off events. [2022-11-18 18:47:49,932 INFO L131 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2022-11-18 18:47:49,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2289 conditions, 1511 events. 105/1511 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8997 event pairs, 38 based on Foata normal form. 6/1449 useless extension candidates. Maximal degree in co-relation 1320. Up to 142 conditions per place. [2022-11-18 18:47:49,943 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 51 selfloop transitions, 9 changer transitions 0/217 dead transitions. [2022-11-18 18:47:49,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 217 transitions, 726 flow [2022-11-18 18:47:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:47:49,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:47:49,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1341 transitions. [2022-11-18 18:47:49,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8685233160621761 [2022-11-18 18:47:49,948 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1341 transitions. [2022-11-18 18:47:49,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1341 transitions. [2022-11-18 18:47:49,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:49,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1341 transitions. [2022-11-18 18:47:49,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.625) internal successors, (1341), 8 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:49,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:49,957 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:49,958 INFO L175 Difference]: Start difference. First operand has 203 places, 187 transitions, 523 flow. Second operand 8 states and 1341 transitions. [2022-11-18 18:47:49,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 217 transitions, 726 flow [2022-11-18 18:47:49,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 217 transitions, 722 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:47:49,965 INFO L231 Difference]: Finished difference. Result has 212 places, 191 transitions, 570 flow [2022-11-18 18:47:49,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=570, PETRI_PLACES=212, PETRI_TRANSITIONS=191} [2022-11-18 18:47:49,970 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 34 predicate places. [2022-11-18 18:47:49,970 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 191 transitions, 570 flow [2022-11-18 18:47:49,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:49,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:49,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:49,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:47:49,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:49,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:49,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1691629104, now seen corresponding path program 1 times [2022-11-18 18:47:49,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:49,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527768643] [2022-11-18 18:47:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:49,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:50,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:50,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527768643] [2022-11-18 18:47:50,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527768643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:50,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:50,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:47:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310195000] [2022-11-18 18:47:50,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:50,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:47:50,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:50,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:47:50,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:47:50,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-18 18:47:50,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 191 transitions, 570 flow. Second operand has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:50,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:50,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-18 18:47:50,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:50,800 INFO L130 PetriNetUnfolder]: 154/2133 cut-off events. [2022-11-18 18:47:50,800 INFO L131 PetriNetUnfolder]: For 403/403 co-relation queries the response was YES. [2022-11-18 18:47:50,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3317 conditions, 2133 events. 154/2133 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 14308 event pairs, 42 based on Foata normal form. 8/2061 useless extension candidates. Maximal degree in co-relation 2682. Up to 198 conditions per place. [2022-11-18 18:47:50,818 INFO L137 encePairwiseOnDemand]: 183/193 looper letters, 53 selfloop transitions, 14 changer transitions 0/224 dead transitions. [2022-11-18 18:47:50,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 224 transitions, 823 flow [2022-11-18 18:47:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:47:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:47:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1340 transitions. [2022-11-18 18:47:50,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8678756476683938 [2022-11-18 18:47:50,823 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1340 transitions. [2022-11-18 18:47:50,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1340 transitions. [2022-11-18 18:47:50,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:50,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1340 transitions. [2022-11-18 18:47:50,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.5) internal successors, (1340), 8 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:50,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:50,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:50,833 INFO L175 Difference]: Start difference. First operand has 212 places, 191 transitions, 570 flow. Second operand 8 states and 1340 transitions. [2022-11-18 18:47:50,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 224 transitions, 823 flow [2022-11-18 18:47:50,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 224 transitions, 815 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:47:50,842 INFO L231 Difference]: Finished difference. Result has 220 places, 200 transitions, 684 flow [2022-11-18 18:47:50,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=220, PETRI_TRANSITIONS=200} [2022-11-18 18:47:50,844 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 42 predicate places. [2022-11-18 18:47:50,844 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 200 transitions, 684 flow [2022-11-18 18:47:50,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:50,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:50,846 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 18:47:50,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:47:50,847 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:50,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:50,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1736170628, now seen corresponding path program 1 times [2022-11-18 18:47:50,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:50,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531160955] [2022-11-18 18:47:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:50,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:51,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:51,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531160955] [2022-11-18 18:47:51,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531160955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:47:51,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764737441] [2022-11-18 18:47:51,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:51,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:47:51,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:51,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:47:51,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:47:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:51,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:47:51,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:47:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:51,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:47:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:51,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764737441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:47:51,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:47:51,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 18:47:51,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929222240] [2022-11-18 18:47:51,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:47:51,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:47:51,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:51,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:47:51,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:47:51,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-18 18:47:51,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 200 transitions, 684 flow. Second operand has 12 states, 12 states have (on average 169.25) internal successors, (2031), 12 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:51,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:51,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-18 18:47:51,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:52,626 INFO L130 PetriNetUnfolder]: 174/2945 cut-off events. [2022-11-18 18:47:52,626 INFO L131 PetriNetUnfolder]: For 1042/1048 co-relation queries the response was YES. [2022-11-18 18:47:52,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 2945 events. 174/2945 cut-off events. For 1042/1048 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 19863 event pairs, 42 based on Foata normal form. 24/2854 useless extension candidates. Maximal degree in co-relation 3849. Up to 117 conditions per place. [2022-11-18 18:47:52,651 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 65 selfloop transitions, 26 changer transitions 0/259 dead transitions. [2022-11-18 18:47:52,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 259 transitions, 1093 flow [2022-11-18 18:47:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:47:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:47:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3075 transitions. [2022-11-18 18:47:52,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.885146804835924 [2022-11-18 18:47:52,658 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3075 transitions. [2022-11-18 18:47:52,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3075 transitions. [2022-11-18 18:47:52,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:52,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3075 transitions. [2022-11-18 18:47:52,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.83333333333334) internal successors, (3075), 18 states have internal predecessors, (3075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:52,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 193.0) internal successors, (3667), 19 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:52,675 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 193.0) internal successors, (3667), 19 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:52,675 INFO L175 Difference]: Start difference. First operand has 220 places, 200 transitions, 684 flow. Second operand 18 states and 3075 transitions. [2022-11-18 18:47:52,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 259 transitions, 1093 flow [2022-11-18 18:47:52,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 259 transitions, 1085 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:47:52,685 INFO L231 Difference]: Finished difference. Result has 238 places, 216 transitions, 854 flow [2022-11-18 18:47:52,686 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=854, PETRI_PLACES=238, PETRI_TRANSITIONS=216} [2022-11-18 18:47:52,686 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 60 predicate places. [2022-11-18 18:47:52,686 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 216 transitions, 854 flow [2022-11-18 18:47:52,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.25) internal successors, (2031), 12 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:52,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:52,688 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 18:47:52,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:47:52,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:47:52,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:52,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:52,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2013284851, now seen corresponding path program 1 times [2022-11-18 18:47:52,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:52,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868819420] [2022-11-18 18:47:52,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:52,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:53,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:53,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868819420] [2022-11-18 18:47:53,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868819420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:47:53,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132112190] [2022-11-18 18:47:53,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:53,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:47:53,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:53,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:47:53,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:47:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:53,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:47:53,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:47:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:53,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:47:53,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132112190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:53,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:47:53,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:47:53,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189732045] [2022-11-18 18:47:53,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:53,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:47:53,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:53,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:47:53,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:47:53,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-18 18:47:53,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 216 transitions, 854 flow. Second operand has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:53,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:53,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-18 18:47:53,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:54,423 INFO L130 PetriNetUnfolder]: 184/3128 cut-off events. [2022-11-18 18:47:54,423 INFO L131 PetriNetUnfolder]: For 1679/1685 co-relation queries the response was YES. [2022-11-18 18:47:54,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5130 conditions, 3128 events. 184/3128 cut-off events. For 1679/1685 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 21404 event pairs, 43 based on Foata normal form. 30/3033 useless extension candidates. Maximal degree in co-relation 4196. Up to 235 conditions per place. [2022-11-18 18:47:54,453 INFO L137 encePairwiseOnDemand]: 185/193 looper letters, 49 selfloop transitions, 19 changer transitions 0/236 dead transitions. [2022-11-18 18:47:54,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 236 transitions, 1079 flow [2022-11-18 18:47:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:47:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:47:54,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1375 transitions. [2022-11-18 18:47:54,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8905440414507773 [2022-11-18 18:47:54,457 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1375 transitions. [2022-11-18 18:47:54,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1375 transitions. [2022-11-18 18:47:54,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:54,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1375 transitions. [2022-11-18 18:47:54,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.875) internal successors, (1375), 8 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:54,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:54,466 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 193.0) internal successors, (1737), 9 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:54,466 INFO L175 Difference]: Start difference. First operand has 238 places, 216 transitions, 854 flow. Second operand 8 states and 1375 transitions. [2022-11-18 18:47:54,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 236 transitions, 1079 flow [2022-11-18 18:47:54,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 236 transitions, 1022 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-11-18 18:47:54,480 INFO L231 Difference]: Finished difference. Result has 240 places, 218 transitions, 899 flow [2022-11-18 18:47:54,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=899, PETRI_PLACES=240, PETRI_TRANSITIONS=218} [2022-11-18 18:47:54,481 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 62 predicate places. [2022-11-18 18:47:54,481 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 218 transitions, 899 flow [2022-11-18 18:47:54,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:54,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:54,482 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 18:47:54,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:47:54,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:47:54,689 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:54,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1554948369, now seen corresponding path program 1 times [2022-11-18 18:47:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:54,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285570822] [2022-11-18 18:47:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:47:54,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:54,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285570822] [2022-11-18 18:47:54,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285570822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:54,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:54,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:54,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139038722] [2022-11-18 18:47:54,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:54,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:47:54,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:54,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:47:54,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:47:54,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-18 18:47:54,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 218 transitions, 899 flow. Second operand has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:54,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:54,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-18 18:47:54,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:55,559 INFO L130 PetriNetUnfolder]: 131/2839 cut-off events. [2022-11-18 18:47:55,562 INFO L131 PetriNetUnfolder]: For 1260/1260 co-relation queries the response was YES. [2022-11-18 18:47:55,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4377 conditions, 2839 events. 131/2839 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 17908 event pairs, 29 based on Foata normal form. 16/2745 useless extension candidates. Maximal degree in co-relation 3786. Up to 95 conditions per place. [2022-11-18 18:47:55,591 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 12 selfloop transitions, 8 changer transitions 0/221 dead transitions. [2022-11-18 18:47:55,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 221 transitions, 949 flow [2022-11-18 18:47:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:47:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:47:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 873 transitions. [2022-11-18 18:47:55,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9046632124352332 [2022-11-18 18:47:55,594 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 873 transitions. [2022-11-18 18:47:55,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 873 transitions. [2022-11-18 18:47:55,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:55,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 873 transitions. [2022-11-18 18:47:55,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.6) internal successors, (873), 5 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:55,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:55,599 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:55,599 INFO L175 Difference]: Start difference. First operand has 240 places, 218 transitions, 899 flow. Second operand 5 states and 873 transitions. [2022-11-18 18:47:55,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 221 transitions, 949 flow [2022-11-18 18:47:55,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 221 transitions, 933 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-18 18:47:55,615 INFO L231 Difference]: Finished difference. Result has 241 places, 218 transitions, 903 flow [2022-11-18 18:47:55,615 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=903, PETRI_PLACES=241, PETRI_TRANSITIONS=218} [2022-11-18 18:47:55,616 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 63 predicate places. [2022-11-18 18:47:55,617 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 218 transitions, 903 flow [2022-11-18 18:47:55,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:55,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:55,617 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 18:47:55,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:47:55,618 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:55,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:55,618 INFO L85 PathProgramCache]: Analyzing trace with hash -958758659, now seen corresponding path program 1 times [2022-11-18 18:47:55,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:55,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857892452] [2022-11-18 18:47:55,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:55,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:55,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:55,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857892452] [2022-11-18 18:47:55,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857892452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:47:55,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665971943] [2022-11-18 18:47:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:55,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:47:55,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:55,806 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:47:55,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:47:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:55,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:47:55,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:47:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:56,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:47:56,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665971943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:56,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:47:56,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 18:47:56,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222351541] [2022-11-18 18:47:56,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:56,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:47:56,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:56,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:47:56,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:47:56,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 193 [2022-11-18 18:47:56,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 218 transitions, 903 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:56,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:56,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 193 [2022-11-18 18:47:56,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:56,946 INFO L130 PetriNetUnfolder]: 126/2973 cut-off events. [2022-11-18 18:47:56,947 INFO L131 PetriNetUnfolder]: For 1344/1344 co-relation queries the response was YES. [2022-11-18 18:47:56,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 2973 events. 126/2973 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 19016 event pairs, 36 based on Foata normal form. 24/2882 useless extension candidates. Maximal degree in co-relation 4131. Up to 140 conditions per place. [2022-11-18 18:47:56,974 INFO L137 encePairwiseOnDemand]: 189/193 looper letters, 13 selfloop transitions, 5 changer transitions 0/219 dead transitions. [2022-11-18 18:47:56,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 219 transitions, 943 flow [2022-11-18 18:47:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:47:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:47:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 699 transitions. [2022-11-18 18:47:56,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.905440414507772 [2022-11-18 18:47:56,979 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 699 transitions. [2022-11-18 18:47:56,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 699 transitions. [2022-11-18 18:47:56,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:56,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 699 transitions. [2022-11-18 18:47:56,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:56,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:56,984 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:56,984 INFO L175 Difference]: Start difference. First operand has 241 places, 218 transitions, 903 flow. Second operand 4 states and 699 transitions. [2022-11-18 18:47:56,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 219 transitions, 943 flow [2022-11-18 18:47:56,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 219 transitions, 931 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:47:57,064 INFO L231 Difference]: Finished difference. Result has 240 places, 217 transitions, 897 flow [2022-11-18 18:47:57,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=897, PETRI_PLACES=240, PETRI_TRANSITIONS=217} [2022-11-18 18:47:57,065 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 62 predicate places. [2022-11-18 18:47:57,065 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 217 transitions, 897 flow [2022-11-18 18:47:57,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:57,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:57,066 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:57,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:47:57,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:47:57,267 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:57,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:57,267 INFO L85 PathProgramCache]: Analyzing trace with hash 513857748, now seen corresponding path program 1 times [2022-11-18 18:47:57,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:57,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914529050] [2022-11-18 18:47:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:57,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:57,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:57,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914529050] [2022-11-18 18:47:57,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914529050] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:47:57,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153362867] [2022-11-18 18:47:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:57,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:47:57,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:57,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:47:57,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:47:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:57,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:47:57,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:47:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:57,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:47:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:58,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153362867] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:47:58,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:47:58,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 18:47:58,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26760285] [2022-11-18 18:47:58,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:47:58,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:47:58,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:58,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:47:58,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:47:58,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-18 18:47:58,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 217 transitions, 897 flow. Second operand has 16 states, 16 states have (on average 163.5) internal successors, (2616), 16 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:58,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:47:58,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-18 18:47:58,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:47:59,463 INFO L130 PetriNetUnfolder]: 249/3504 cut-off events. [2022-11-18 18:47:59,463 INFO L131 PetriNetUnfolder]: For 2027/2027 co-relation queries the response was YES. [2022-11-18 18:47:59,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5877 conditions, 3504 events. 249/3504 cut-off events. For 2027/2027 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 25886 event pairs, 62 based on Foata normal form. 38/3404 useless extension candidates. Maximal degree in co-relation 4884. Up to 120 conditions per place. [2022-11-18 18:47:59,494 INFO L137 encePairwiseOnDemand]: 180/193 looper letters, 81 selfloop transitions, 47 changer transitions 0/284 dead transitions. [2022-11-18 18:47:59,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 284 transitions, 1399 flow [2022-11-18 18:47:59,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:47:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 18:47:59,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3788 transitions. [2022-11-18 18:47:59,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.853345348051363 [2022-11-18 18:47:59,505 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3788 transitions. [2022-11-18 18:47:59,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3788 transitions. [2022-11-18 18:47:59,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:47:59,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3788 transitions. [2022-11-18 18:47:59,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 164.69565217391303) internal successors, (3788), 23 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:59,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 193.0) internal successors, (4632), 24 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:59,586 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 193.0) internal successors, (4632), 24 states have internal predecessors, (4632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:59,586 INFO L175 Difference]: Start difference. First operand has 240 places, 217 transitions, 897 flow. Second operand 23 states and 3788 transitions. [2022-11-18 18:47:59,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 284 transitions, 1399 flow [2022-11-18 18:47:59,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 284 transitions, 1389 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:47:59,609 INFO L231 Difference]: Finished difference. Result has 263 places, 229 transitions, 1097 flow [2022-11-18 18:47:59,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1097, PETRI_PLACES=263, PETRI_TRANSITIONS=229} [2022-11-18 18:47:59,610 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 85 predicate places. [2022-11-18 18:47:59,611 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 229 transitions, 1097 flow [2022-11-18 18:47:59,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 163.5) internal successors, (2616), 16 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:59,612 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:47:59,612 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:59,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:47:59,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:47:59,818 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:47:59,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:59,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1263904018, now seen corresponding path program 1 times [2022-11-18 18:47:59,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:59,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957054916] [2022-11-18 18:47:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:59,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:00,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:00,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957054916] [2022-11-18 18:48:00,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957054916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:48:00,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816925366] [2022-11-18 18:48:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:00,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:00,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:00,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:00,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:48:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:00,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:48:00,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:00,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:00,857 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:00,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816925366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:48:00,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:48:00,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-18 18:48:00,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379895300] [2022-11-18 18:48:00,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:00,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:48:00,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:00,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:48:00,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:48:00,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-18 18:48:00,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 229 transitions, 1097 flow. Second operand has 14 states, 14 states have (on average 164.14285714285714) internal successors, (2298), 14 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:00,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:00,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-18 18:48:00,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:02,941 INFO L130 PetriNetUnfolder]: 396/5332 cut-off events. [2022-11-18 18:48:02,942 INFO L131 PetriNetUnfolder]: For 3610/3610 co-relation queries the response was YES. [2022-11-18 18:48:02,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9138 conditions, 5332 events. 396/5332 cut-off events. For 3610/3610 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 41870 event pairs, 58 based on Foata normal form. 53/5183 useless extension candidates. Maximal degree in co-relation 8114. Up to 266 conditions per place. [2022-11-18 18:48:02,987 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 118 selfloop transitions, 78 changer transitions 0/352 dead transitions. [2022-11-18 18:48:02,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 352 transitions, 2347 flow [2022-11-18 18:48:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:48:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:48:02,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3965 transitions. [2022-11-18 18:48:02,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8560017271157168 [2022-11-18 18:48:02,994 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3965 transitions. [2022-11-18 18:48:02,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3965 transitions. [2022-11-18 18:48:02,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:02,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3965 transitions. [2022-11-18 18:48:03,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 165.20833333333334) internal successors, (3965), 24 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:03,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 193.0) internal successors, (4825), 25 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:03,015 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 193.0) internal successors, (4825), 25 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:03,016 INFO L175 Difference]: Start difference. First operand has 263 places, 229 transitions, 1097 flow. Second operand 24 states and 3965 transitions. [2022-11-18 18:48:03,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 352 transitions, 2347 flow [2022-11-18 18:48:03,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 352 transitions, 2170 flow, removed 78 selfloop flow, removed 5 redundant places. [2022-11-18 18:48:03,042 INFO L231 Difference]: Finished difference. Result has 290 places, 283 transitions, 1833 flow [2022-11-18 18:48:03,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1833, PETRI_PLACES=290, PETRI_TRANSITIONS=283} [2022-11-18 18:48:03,044 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 112 predicate places. [2022-11-18 18:48:03,044 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 283 transitions, 1833 flow [2022-11-18 18:48:03,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 164.14285714285714) internal successors, (2298), 14 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:03,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:03,046 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 18:48:03,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:03,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:03,252 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:48:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:03,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1633020957, now seen corresponding path program 2 times [2022-11-18 18:48:03,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:03,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680447917] [2022-11-18 18:48:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:03,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:03,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:03,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680447917] [2022-11-18 18:48:03,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680447917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:48:03,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848220446] [2022-11-18 18:48:03,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:48:03,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:03,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:03,830 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:03,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:48:04,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:48:04,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:48:04,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:48:04,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:04,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:04,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848220446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:48:04,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:48:04,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-18 18:48:04,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310450934] [2022-11-18 18:48:04,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:04,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 18:48:04,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:04,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 18:48:04,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:48:04,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 193 [2022-11-18 18:48:04,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 283 transitions, 1833 flow. Second operand has 24 states, 24 states have (on average 169.625) internal successors, (4071), 24 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:04,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:04,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 193 [2022-11-18 18:48:04,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:07,949 INFO L130 PetriNetUnfolder]: 464/7957 cut-off events. [2022-11-18 18:48:07,949 INFO L131 PetriNetUnfolder]: For 7913/7916 co-relation queries the response was YES. [2022-11-18 18:48:07,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13881 conditions, 7957 events. 464/7957 cut-off events. For 7913/7916 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 58921 event pairs, 128 based on Foata normal form. 48/7680 useless extension candidates. Maximal degree in co-relation 12847. Up to 405 conditions per place. [2022-11-18 18:48:08,007 INFO L137 encePairwiseOnDemand]: 184/193 looper letters, 176 selfloop transitions, 70 changer transitions 0/422 dead transitions. [2022-11-18 18:48:08,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 422 transitions, 3156 flow [2022-11-18 18:48:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 18:48:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 18:48:08,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5656 transitions. [2022-11-18 18:48:08,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8880514994504631 [2022-11-18 18:48:08,019 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5656 transitions. [2022-11-18 18:48:08,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5656 transitions. [2022-11-18 18:48:08,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:08,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5656 transitions. [2022-11-18 18:48:08,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 171.3939393939394) internal successors, (5656), 33 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:08,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:08,047 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:08,048 INFO L175 Difference]: Start difference. First operand has 290 places, 283 transitions, 1833 flow. Second operand 33 states and 5656 transitions. [2022-11-18 18:48:08,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 422 transitions, 3156 flow [2022-11-18 18:48:08,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 422 transitions, 3028 flow, removed 60 selfloop flow, removed 3 redundant places. [2022-11-18 18:48:08,103 INFO L231 Difference]: Finished difference. Result has 326 places, 317 transitions, 2349 flow [2022-11-18 18:48:08,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2349, PETRI_PLACES=326, PETRI_TRANSITIONS=317} [2022-11-18 18:48:08,104 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 148 predicate places. [2022-11-18 18:48:08,105 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 317 transitions, 2349 flow [2022-11-18 18:48:08,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 169.625) internal successors, (4071), 24 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:08,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:08,106 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:08,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:08,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:48:08,313 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:48:08,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1492339702, now seen corresponding path program 1 times [2022-11-18 18:48:08,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:08,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799525506] [2022-11-18 18:48:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:08,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 18:48:08,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:08,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799525506] [2022-11-18 18:48:08,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799525506] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:48:08,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470201557] [2022-11-18 18:48:08,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:08,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:08,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:08,962 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:08,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:48:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:09,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:48:09,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 18:48:09,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 18:48:10,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470201557] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:48:10,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:48:10,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-18 18:48:10,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920069827] [2022-11-18 18:48:10,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:10,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:48:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:10,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:48:10,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:48:10,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-18 18:48:10,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 317 transitions, 2349 flow. Second operand has 18 states, 18 states have (on average 164.11111111111111) internal successors, (2954), 18 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:10,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:10,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-18 18:48:10,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:14,608 INFO L130 PetriNetUnfolder]: 904/12117 cut-off events. [2022-11-18 18:48:14,608 INFO L131 PetriNetUnfolder]: For 12066/12066 co-relation queries the response was YES. [2022-11-18 18:48:14,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21850 conditions, 12117 events. 904/12117 cut-off events. For 12066/12066 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 109122 event pairs, 211 based on Foata normal form. 23/11666 useless extension candidates. Maximal degree in co-relation 20663. Up to 549 conditions per place. [2022-11-18 18:48:14,720 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 190 selfloop transitions, 204 changer transitions 0/550 dead transitions. [2022-11-18 18:48:14,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 550 transitions, 5029 flow [2022-11-18 18:48:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 18:48:14,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 18:48:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6254 transitions. [2022-11-18 18:48:14,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8527406599400055 [2022-11-18 18:48:14,736 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6254 transitions. [2022-11-18 18:48:14,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6254 transitions. [2022-11-18 18:48:14,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:14,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6254 transitions. [2022-11-18 18:48:14,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 164.57894736842104) internal successors, (6254), 38 states have internal predecessors, (6254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:14,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 193.0) internal successors, (7527), 39 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:14,766 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 193.0) internal successors, (7527), 39 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:14,766 INFO L175 Difference]: Start difference. First operand has 326 places, 317 transitions, 2349 flow. Second operand 38 states and 6254 transitions. [2022-11-18 18:48:14,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 550 transitions, 5029 flow [2022-11-18 18:48:14,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 550 transitions, 4907 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-11-18 18:48:14,869 INFO L231 Difference]: Finished difference. Result has 365 places, 436 transitions, 4404 flow [2022-11-18 18:48:14,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4404, PETRI_PLACES=365, PETRI_TRANSITIONS=436} [2022-11-18 18:48:14,870 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 187 predicate places. [2022-11-18 18:48:14,870 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 436 transitions, 4404 flow [2022-11-18 18:48:14,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 164.11111111111111) internal successors, (2954), 18 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:14,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:14,872 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:14,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:15,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:48:15,091 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:48:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:15,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1901911102, now seen corresponding path program 2 times [2022-11-18 18:48:15,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:15,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021639502] [2022-11-18 18:48:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:15,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:15,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:15,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021639502] [2022-11-18 18:48:15,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021639502] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:48:15,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168023360] [2022-11-18 18:48:15,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:48:15,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:15,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:15,860 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:15,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:48:16,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:48:16,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:48:16,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:48:16,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:16,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:17,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168023360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:48:17,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:48:17,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-11-18 18:48:17,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131971480] [2022-11-18 18:48:17,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:17,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:48:17,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:17,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:48:17,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-11-18 18:48:17,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-18 18:48:17,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 436 transitions, 4404 flow. Second operand has 26 states, 26 states have (on average 164.07692307692307) internal successors, (4266), 26 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:17,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:17,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-18 18:48:17,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:24,960 INFO L130 PetriNetUnfolder]: 1425/18094 cut-off events. [2022-11-18 18:48:24,960 INFO L131 PetriNetUnfolder]: For 22940/22940 co-relation queries the response was YES. [2022-11-18 18:48:25,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33539 conditions, 18094 events. 1425/18094 cut-off events. For 22940/22940 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 183297 event pairs, 195 based on Foata normal form. 90/17505 useless extension candidates. Maximal degree in co-relation 32314. Up to 790 conditions per place. [2022-11-18 18:48:25,125 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 308 selfloop transitions, 350 changer transitions 0/814 dead transitions. [2022-11-18 18:48:25,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 814 transitions, 9616 flow [2022-11-18 18:48:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 18:48:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-18 18:48:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8409 transitions. [2022-11-18 18:48:25,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8543127095397745 [2022-11-18 18:48:25,139 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8409 transitions. [2022-11-18 18:48:25,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8409 transitions. [2022-11-18 18:48:25,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:25,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8409 transitions. [2022-11-18 18:48:25,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 164.88235294117646) internal successors, (8409), 51 states have internal predecessors, (8409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:25,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 193.0) internal successors, (10036), 52 states have internal predecessors, (10036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:25,185 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 193.0) internal successors, (10036), 52 states have internal predecessors, (10036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:25,185 INFO L175 Difference]: Start difference. First operand has 365 places, 436 transitions, 4404 flow. Second operand 51 states and 8409 transitions. [2022-11-18 18:48:25,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 814 transitions, 9616 flow [2022-11-18 18:48:25,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 814 transitions, 9382 flow, removed 113 selfloop flow, removed 3 redundant places. [2022-11-18 18:48:25,389 INFO L231 Difference]: Finished difference. Result has 425 places, 622 transitions, 8061 flow [2022-11-18 18:48:25,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=4294, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8061, PETRI_PLACES=425, PETRI_TRANSITIONS=622} [2022-11-18 18:48:25,390 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 247 predicate places. [2022-11-18 18:48:25,391 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 622 transitions, 8061 flow [2022-11-18 18:48:25,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 164.07692307692307) internal successors, (4266), 26 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:25,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:25,393 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 18:48:25,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:25,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:48:25,599 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:48:25,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:25,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1398417184, now seen corresponding path program 1 times [2022-11-18 18:48:25,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:25,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046798420] [2022-11-18 18:48:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:25,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 18:48:26,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:26,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046798420] [2022-11-18 18:48:26,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046798420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:48:26,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646141979] [2022-11-18 18:48:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:26,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:26,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:26,502 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:26,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:48:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:26,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:48:26,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 18:48:27,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 18:48:28,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646141979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:48:28,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:48:28,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2022-11-18 18:48:28,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611107225] [2022-11-18 18:48:28,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:28,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 18:48:28,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:28,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 18:48:28,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:48:28,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-18 18:48:28,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 622 transitions, 8061 flow. Second operand has 24 states, 24 states have (on average 164.5) internal successors, (3948), 24 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:28,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:28,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-18 18:48:28,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:48:40,264 INFO L130 PetriNetUnfolder]: 2247/27432 cut-off events. [2022-11-18 18:48:40,264 INFO L131 PetriNetUnfolder]: For 44814/44814 co-relation queries the response was YES. [2022-11-18 18:48:40,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52412 conditions, 27432 events. 2247/27432 cut-off events. For 44814/44814 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 307622 event pairs, 210 based on Foata normal form. 134/26543 useless extension candidates. Maximal degree in co-relation 51519. Up to 1278 conditions per place. [2022-11-18 18:48:40,577 INFO L137 encePairwiseOnDemand]: 181/193 looper letters, 196 selfloop transitions, 719 changer transitions 0/1071 dead transitions. [2022-11-18 18:48:40,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1071 transitions, 16172 flow [2022-11-18 18:48:40,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 18:48:40,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 18:48:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6409 transitions. [2022-11-18 18:48:40,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8514680483592401 [2022-11-18 18:48:40,588 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6409 transitions. [2022-11-18 18:48:40,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6409 transitions. [2022-11-18 18:48:40,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:48:40,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6409 transitions. [2022-11-18 18:48:40,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 164.33333333333334) internal successors, (6409), 39 states have internal predecessors, (6409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:40,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 193.0) internal successors, (7720), 40 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:40,615 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 193.0) internal successors, (7720), 40 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:40,616 INFO L175 Difference]: Start difference. First operand has 425 places, 622 transitions, 8061 flow. Second operand 39 states and 6409 transitions. [2022-11-18 18:48:40,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1071 transitions, 16172 flow [2022-11-18 18:48:41,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 1071 transitions, 14983 flow, removed 357 selfloop flow, removed 16 redundant places. [2022-11-18 18:48:41,281 INFO L231 Difference]: Finished difference. Result has 444 places, 965 transitions, 14572 flow [2022-11-18 18:48:41,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14572, PETRI_PLACES=444, PETRI_TRANSITIONS=965} [2022-11-18 18:48:41,283 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 266 predicate places. [2022-11-18 18:48:41,283 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 965 transitions, 14572 flow [2022-11-18 18:48:41,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 164.5) internal successors, (3948), 24 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:41,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:48:41,284 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 18:48:41,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-18 18:48:41,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:41,485 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:48:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1284034297, now seen corresponding path program 1 times [2022-11-18 18:48:41,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:41,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231004517] [2022-11-18 18:48:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:41,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 367 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-18 18:48:42,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:42,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231004517] [2022-11-18 18:48:42,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231004517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:48:42,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905533181] [2022-11-18 18:48:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:42,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:42,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:42,246 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:42,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:48:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:42,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:48:42,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 367 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-18 18:48:43,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:48:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 367 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-18 18:48:43,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905533181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:48:43,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:48:43,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-18 18:48:43,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801844395] [2022-11-18 18:48:43,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:48:43,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:48:43,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:43,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:48:43,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:48:43,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-18 18:48:43,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 965 transitions, 14572 flow. Second operand has 22 states, 22 states have (on average 164.45454545454547) internal successors, (3618), 22 states have internal predecessors, (3618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:43,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:48:43,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-18 18:48:43,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:49:05,756 INFO L130 PetriNetUnfolder]: 3421/40415 cut-off events. [2022-11-18 18:49:05,756 INFO L131 PetriNetUnfolder]: For 72483/72483 co-relation queries the response was YES. [2022-11-18 18:49:06,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79350 conditions, 40415 events. 3421/40415 cut-off events. For 72483/72483 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 492502 event pairs, 890 based on Foata normal form. 179/39056 useless extension candidates. Maximal degree in co-relation 78087. Up to 2084 conditions per place. [2022-11-18 18:49:06,282 INFO L137 encePairwiseOnDemand]: 182/193 looper letters, 245 selfloop transitions, 1190 changer transitions 0/1591 dead transitions. [2022-11-18 18:49:06,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1591 transitions, 26472 flow [2022-11-18 18:49:06,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 18:49:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 18:49:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5448 transitions. [2022-11-18 18:49:06,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8553933113518606 [2022-11-18 18:49:06,291 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5448 transitions. [2022-11-18 18:49:06,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5448 transitions. [2022-11-18 18:49:06,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:49:06,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5448 transitions. [2022-11-18 18:49:06,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 165.0909090909091) internal successors, (5448), 33 states have internal predecessors, (5448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:06,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:06,313 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 193.0) internal successors, (6562), 34 states have internal predecessors, (6562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:06,313 INFO L175 Difference]: Start difference. First operand has 444 places, 965 transitions, 14572 flow. Second operand 33 states and 5448 transitions. [2022-11-18 18:49:06,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1591 transitions, 26472 flow [2022-11-18 18:49:07,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1591 transitions, 25594 flow, removed 408 selfloop flow, removed 5 redundant places. [2022-11-18 18:49:07,362 INFO L231 Difference]: Finished difference. Result has 468 places, 1452 transitions, 25185 flow [2022-11-18 18:49:07,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=13639, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=940, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=25185, PETRI_PLACES=468, PETRI_TRANSITIONS=1452} [2022-11-18 18:49:07,364 INFO L288 CegarLoopForPetriNet]: 178 programPoint places, 290 predicate places. [2022-11-18 18:49:07,364 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1452 transitions, 25185 flow [2022-11-18 18:49:07,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 164.45454545454547) internal successors, (3618), 22 states have internal predecessors, (3618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:07,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:49:07,365 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:07,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:07,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:07,572 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 18:49:07,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:07,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2020481866, now seen corresponding path program 2 times [2022-11-18 18:49:07,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:07,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200022417] [2022-11-18 18:49:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:07,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1187 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 18:49:08,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:08,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200022417] [2022-11-18 18:49:08,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200022417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:49:08,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820324366] [2022-11-18 18:49:08,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:49:08,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:08,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:08,652 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:08,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfe4234-d961-4676-b12b-1c0eea17dd69/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:49:08,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:49:08,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:49:08,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:49:08,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 18:49:09,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1155 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 18:49:10,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820324366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:10,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:49:10,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 33 [2022-11-18 18:49:10,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235290482] [2022-11-18 18:49:10,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:10,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 18:49:10,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:10,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 18:49:10,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:49:10,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 193 [2022-11-18 18:49:10,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1452 transitions, 25185 flow. Second operand has 34 states, 34 states have (on average 164.05882352941177) internal successors, (5578), 34 states have internal predecessors, (5578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:49:10,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:49:10,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 193 [2022-11-18 18:49:10,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand