./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/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_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/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_5b467bdf-435b-4ef1-8dba-7733466b35e4/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 dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- 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 20:25:40,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:25:40,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:25:40,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:25:40,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:25:40,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:25:40,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:25:40,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:25:40,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:25:40,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:25:40,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:25:40,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:25:40,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:25:40,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:25:40,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:25:40,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:25:40,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:25:40,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:25:41,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:25:41,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:25:41,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:25:41,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:25:41,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:25:41,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:25:41,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:25:41,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:25:41,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:25:41,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:25:41,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:25:41,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:25:41,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:25:41,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:25:41,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:25:41,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:25:41,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:25:41,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:25:41,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:25:41,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:25:41,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:25:41,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:25:41,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:25:41,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:25:41,077 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:25:41,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:25:41,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:25:41,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:25:41,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:25:41,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:25:41,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:25:41,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:25:41,081 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:25:41,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:25:41,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:25:41,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:25:41,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:25:41,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:25:41,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:25:41,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:25:41,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:25:41,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:25:41,084 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:25:41,084 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:25:41,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:25:41,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:25:41,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:25:41,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:25:41,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:25:41,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:25:41,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:25:41,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:25:41,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:25:41,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:25:41,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:25:41,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:25:41,089 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:25:41,089 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:25:41,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:25:41,089 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_5b467bdf-435b-4ef1-8dba-7733466b35e4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2022-11-18 20:25:41,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:25:41,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:25:41,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:25:41,411 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:25:41,412 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:25:41,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2022-11-18 20:25:41,479 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/data/eb688512a/b04218659b7c4579838f53ef7708f829/FLAGeb32239b3 [2022-11-18 20:25:42,059 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:25:42,060 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2022-11-18 20:25:42,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/data/eb688512a/b04218659b7c4579838f53ef7708f829/FLAGeb32239b3 [2022-11-18 20:25:42,327 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/data/eb688512a/b04218659b7c4579838f53ef7708f829 [2022-11-18 20:25:42,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:25:42,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:25:42,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:25:42,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:25:42,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:25:42,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:42" (1/1) ... [2022-11-18 20:25:42,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b58ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:42, skipping insertion in model container [2022-11-18 20:25:42,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:25:42" (1/1) ... [2022-11-18 20:25:42,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:25:42,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:25:43,090 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_5b467bdf-435b-4ef1-8dba-7733466b35e4/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2022-11-18 20:25:43,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:25:43,158 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:25:43,218 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_5b467bdf-435b-4ef1-8dba-7733466b35e4/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2022-11-18 20:25:43,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:25:43,286 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:25:43,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43 WrapperNode [2022-11-18 20:25:43,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:25:43,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:25:43,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:25:43,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:25:43,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (1/1) ... [2022-11-18 20:25:43,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (1/1) ... [2022-11-18 20:25:43,343 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 205 [2022-11-18 20:25:43,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:25:43,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:25:43,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:25:43,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:25:43,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (1/1) ... [2022-11-18 20:25:43,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (1/1) ... [2022-11-18 20:25:43,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (1/1) ... [2022-11-18 20:25:43,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (1/1) ... [2022-11-18 20:25:43,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (1/1) ... [2022-11-18 20:25:43,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (1/1) ... [2022-11-18 20:25:43,411 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (1/1) ... [2022-11-18 20:25:43,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (1/1) ... [2022-11-18 20:25:43,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:25:43,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:25:43,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:25:43,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:25:43,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (1/1) ... [2022-11-18 20:25:43,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:25:43,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:43,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:25:43,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:25:43,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:25:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:25:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:25:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:25:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:25:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:25:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 20:25:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 20:25:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:25:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:25:43,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:25:43,510 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 20:25:43,653 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:25:43,655 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:25:44,060 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:25:44,069 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:25:44,069 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-18 20:25:44,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:25:44 BoogieIcfgContainer [2022-11-18 20:25:44,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:25:44,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:25:44,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:25:44,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:25:44,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:25:42" (1/3) ... [2022-11-18 20:25:44,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777f89ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:25:44, skipping insertion in model container [2022-11-18 20:25:44,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:25:43" (2/3) ... [2022-11-18 20:25:44,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777f89ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:25:44, skipping insertion in model container [2022-11-18 20:25:44,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:25:44" (3/3) ... [2022-11-18 20:25:44,083 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2022-11-18 20:25:44,091 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:25:44,101 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:25:44,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-18 20:25:44,102 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:25:44,198 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 20:25:44,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 230 transitions, 468 flow [2022-11-18 20:25:44,417 INFO L130 PetriNetUnfolder]: 45/309 cut-off events. [2022-11-18 20:25:44,418 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-18 20:25:44,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 309 events. 45/309 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 993 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2022-11-18 20:25:44,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 230 transitions, 468 flow [2022-11-18 20:25:44,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 227 transitions, 462 flow [2022-11-18 20:25:44,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:25:44,474 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;@586121c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:25:44,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-18 20:25:44,492 INFO L130 PetriNetUnfolder]: 1/31 cut-off events. [2022-11-18 20:25:44,493 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:25:44,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:44,494 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] [2022-11-18 20:25:44,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:25:44,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1462409241, now seen corresponding path program 1 times [2022-11-18 20:25:44,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:44,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322074154] [2022-11-18 20:25:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:44,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:44,897 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 20:25:44,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:44,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322074154] [2022-11-18 20:25:44,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322074154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:44,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:44,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608546997] [2022-11-18 20:25:44,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:44,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:25:44,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:25:44,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:25:44,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-18 20:25:44,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 227 transitions, 462 flow. Second operand has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 0 states have call successors, (0), 0 states 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 20:25:44,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:44,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-18 20:25:44,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:45,164 INFO L130 PetriNetUnfolder]: 4/270 cut-off events. [2022-11-18 20:25:45,164 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 20:25:45,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 270 events. 4/270 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 771 event pairs, 0 based on Foata normal form. 39/277 useless extension candidates. Maximal degree in co-relation 147. Up to 15 conditions per place. [2022-11-18 20:25:45,172 INFO L137 encePairwiseOnDemand]: 196/230 looper letters, 17 selfloop transitions, 4 changer transitions 1/205 dead transitions. [2022-11-18 20:25:45,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 205 transitions, 460 flow [2022-11-18 20:25:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:25:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 987 transitions. [2022-11-18 20:25:45,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8582608695652174 [2022-11-18 20:25:45,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 987 transitions. [2022-11-18 20:25:45,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 987 transitions. [2022-11-18 20:25:45,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:45,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 987 transitions. [2022-11-18 20:25:45,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.4) internal successors, (987), 5 states have internal predecessors, (987), 0 states have call successors, (0), 0 states 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 20:25:45,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 20:25:45,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 20:25:45,228 INFO L175 Difference]: Start difference. First operand has 200 places, 227 transitions, 462 flow. Second operand 5 states and 987 transitions. [2022-11-18 20:25:45,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 205 transitions, 460 flow [2022-11-18 20:25:45,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 205 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:25:45,239 INFO L231 Difference]: Finished difference. Result has 205 places, 200 transitions, 434 flow [2022-11-18 20:25:45,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=205, PETRI_TRANSITIONS=200} [2022-11-18 20:25:45,247 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 5 predicate places. [2022-11-18 20:25:45,247 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 200 transitions, 434 flow [2022-11-18 20:25:45,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 0 states have call successors, (0), 0 states 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 20:25:45,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:45,249 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:45,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:25:45,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:25:45,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1852448115, now seen corresponding path program 1 times [2022-11-18 20:25:45,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:45,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973952212] [2022-11-18 20:25:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:45,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:25:45,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:45,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973952212] [2022-11-18 20:25:45,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973952212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:45,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:45,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:45,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604461230] [2022-11-18 20:25:45,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:45,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:25:45,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:45,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:25:45,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:25:45,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-18 20:25:45,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 200 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 20:25:45,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:45,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-18 20:25:45,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:45,529 INFO L130 PetriNetUnfolder]: 4/268 cut-off events. [2022-11-18 20:25:45,529 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-18 20:25:45,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 268 events. 4/268 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 770 event pairs, 0 based on Foata normal form. 1/241 useless extension candidates. Maximal degree in co-relation 258. Up to 7 conditions per place. [2022-11-18 20:25:45,532 INFO L137 encePairwiseOnDemand]: 224/230 looper letters, 9 selfloop transitions, 8 changer transitions 0/200 dead transitions. [2022-11-18 20:25:45,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 200 transitions, 466 flow [2022-11-18 20:25:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:25:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 950 transitions. [2022-11-18 20:25:45,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2022-11-18 20:25:45,537 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 950 transitions. [2022-11-18 20:25:45,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 950 transitions. [2022-11-18 20:25:45,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:45,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 950 transitions. [2022-11-18 20:25:45,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.0) internal successors, (950), 5 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 20:25:45,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 20:25:45,544 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 20:25:45,545 INFO L175 Difference]: Start difference. First operand has 205 places, 200 transitions, 434 flow. Second operand 5 states and 950 transitions. [2022-11-18 20:25:45,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 200 transitions, 466 flow [2022-11-18 20:25:45,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 200 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:25:45,557 INFO L231 Difference]: Finished difference. Result has 207 places, 200 transitions, 452 flow [2022-11-18 20:25:45,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=207, PETRI_TRANSITIONS=200} [2022-11-18 20:25:45,559 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 7 predicate places. [2022-11-18 20:25:45,559 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 200 transitions, 452 flow [2022-11-18 20:25:45,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 20:25:45,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:45,562 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:45,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:25:45,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:25:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:45,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1591316130, now seen corresponding path program 1 times [2022-11-18 20:25:45,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:45,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953889414] [2022-11-18 20:25:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:45,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:45,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:45,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953889414] [2022-11-18 20:25:45,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953889414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:45,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745660076] [2022-11-18 20:25:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:45,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:45,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:45,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:45,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:25:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:45,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:25:45,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:45,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:25:45,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745660076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:45,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:25:45,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:25:45,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876218942] [2022-11-18 20:25:45,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:45,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:25:45,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:45,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:25:45,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:25:45,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-18 20:25:45,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 200 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 189.8) internal successors, (949), 5 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 20:25:45,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:45,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-18 20:25:45,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:46,057 INFO L130 PetriNetUnfolder]: 4/267 cut-off events. [2022-11-18 20:25:46,058 INFO L131 PetriNetUnfolder]: For 16/17 co-relation queries the response was YES. [2022-11-18 20:25:46,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 267 events. 4/267 cut-off events. For 16/17 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 765 event pairs, 0 based on Foata normal form. 1/240 useless extension candidates. Maximal degree in co-relation 256. Up to 10 conditions per place. [2022-11-18 20:25:46,061 INFO L137 encePairwiseOnDemand]: 226/230 looper letters, 11 selfloop transitions, 5 changer transitions 0/199 dead transitions. [2022-11-18 20:25:46,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 199 transitions, 480 flow [2022-11-18 20:25:46,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:25:46,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:25:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 761 transitions. [2022-11-18 20:25:46,063 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8271739130434783 [2022-11-18 20:25:46,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 761 transitions. [2022-11-18 20:25:46,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 761 transitions. [2022-11-18 20:25:46,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:46,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 761 transitions. [2022-11-18 20:25:46,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 20:25:46,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states 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 20:25:46,070 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states 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 20:25:46,070 INFO L175 Difference]: Start difference. First operand has 207 places, 200 transitions, 452 flow. Second operand 4 states and 761 transitions. [2022-11-18 20:25:46,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 199 transitions, 480 flow [2022-11-18 20:25:46,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 199 transitions, 468 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:25:46,076 INFO L231 Difference]: Finished difference. Result has 206 places, 199 transitions, 446 flow [2022-11-18 20:25:46,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=206, PETRI_TRANSITIONS=199} [2022-11-18 20:25:46,079 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 6 predicate places. [2022-11-18 20:25:46,079 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 199 transitions, 446 flow [2022-11-18 20:25:46,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.8) internal successors, (949), 5 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 20:25:46,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:46,080 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] [2022-11-18 20:25:46,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:25:46,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:46,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:25:46,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:46,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1825407123, now seen corresponding path program 1 times [2022-11-18 20:25:46,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:46,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058328693] [2022-11-18 20:25:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:46,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:46,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:46,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058328693] [2022-11-18 20:25:46,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058328693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:46,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765357565] [2022-11-18 20:25:46,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:46,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:46,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:46,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:46,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:25:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:46,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:25:46,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:46,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:25:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:46,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765357565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:25:46,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:25:46,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:25:46,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675994808] [2022-11-18 20:25:46,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:25:46,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:25:46,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:25:46,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:25:46,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-18 20:25:46,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 199 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 189.7) internal successors, (1897), 10 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states 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 20:25:46,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:46,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-18 20:25:46,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:46,908 INFO L130 PetriNetUnfolder]: 4/275 cut-off events. [2022-11-18 20:25:46,908 INFO L131 PetriNetUnfolder]: For 22/23 co-relation queries the response was YES. [2022-11-18 20:25:46,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 275 events. 4/275 cut-off events. For 22/23 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 755 event pairs, 0 based on Foata normal form. 2/249 useless extension candidates. Maximal degree in co-relation 246. Up to 7 conditions per place. [2022-11-18 20:25:46,911 INFO L137 encePairwiseOnDemand]: 224/230 looper letters, 18 selfloop transitions, 9 changer transitions 0/210 dead transitions. [2022-11-18 20:25:46,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 210 transitions, 538 flow [2022-11-18 20:25:46,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:25:46,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:25:46,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1712 transitions. [2022-11-18 20:25:46,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8270531400966183 [2022-11-18 20:25:46,916 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1712 transitions. [2022-11-18 20:25:46,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1712 transitions. [2022-11-18 20:25:46,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:46,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1712 transitions. [2022-11-18 20:25:46,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 190.22222222222223) internal successors, (1712), 9 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states 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 20:25:46,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states 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 20:25:46,928 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 230.0) internal successors, (2300), 10 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states 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 20:25:46,929 INFO L175 Difference]: Start difference. First operand has 206 places, 199 transitions, 446 flow. Second operand 9 states and 1712 transitions. [2022-11-18 20:25:46,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 210 transitions, 538 flow [2022-11-18 20:25:46,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 210 transitions, 524 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:25:46,934 INFO L231 Difference]: Finished difference. Result has 215 places, 203 transitions, 492 flow [2022-11-18 20:25:46,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=492, PETRI_PLACES=215, PETRI_TRANSITIONS=203} [2022-11-18 20:25:46,935 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 15 predicate places. [2022-11-18 20:25:46,936 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 203 transitions, 492 flow [2022-11-18 20:25:46,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 189.7) internal successors, (1897), 10 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states 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 20:25:46,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:46,937 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:25:46,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:25:47,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:47,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:25:47,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:47,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1830414829, now seen corresponding path program 2 times [2022-11-18 20:25:47,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:47,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029501502] [2022-11-18 20:25:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:47,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:25:47,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:47,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029501502] [2022-11-18 20:25:47,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029501502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:47,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:47,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:47,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015119888] [2022-11-18 20:25:47,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:47,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:25:47,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:47,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:25:47,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:25:47,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-18 20:25:47,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 203 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states 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 20:25:47,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:47,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-18 20:25:47,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:47,336 INFO L130 PetriNetUnfolder]: 3/212 cut-off events. [2022-11-18 20:25:47,337 INFO L131 PetriNetUnfolder]: For 40/57 co-relation queries the response was YES. [2022-11-18 20:25:47,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 212 events. 3/212 cut-off events. For 40/57 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 389 event pairs, 0 based on Foata normal form. 3/197 useless extension candidates. Maximal degree in co-relation 195. Up to 7 conditions per place. [2022-11-18 20:25:47,339 INFO L137 encePairwiseOnDemand]: 223/230 looper letters, 10 selfloop transitions, 4 changer transitions 0/203 dead transitions. [2022-11-18 20:25:47,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 203 transitions, 520 flow [2022-11-18 20:25:47,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:47,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:25:47,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 952 transitions. [2022-11-18 20:25:47,342 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278260869565217 [2022-11-18 20:25:47,342 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 952 transitions. [2022-11-18 20:25:47,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 952 transitions. [2022-11-18 20:25:47,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:47,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 952 transitions. [2022-11-18 20:25:47,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.4) internal successors, (952), 5 states have internal predecessors, (952), 0 states have call successors, (0), 0 states 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 20:25:47,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 20:25:47,348 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 20:25:47,348 INFO L175 Difference]: Start difference. First operand has 215 places, 203 transitions, 492 flow. Second operand 5 states and 952 transitions. [2022-11-18 20:25:47,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 203 transitions, 520 flow [2022-11-18 20:25:47,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 203 transitions, 504 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 20:25:47,354 INFO L231 Difference]: Finished difference. Result has 214 places, 201 transitions, 484 flow [2022-11-18 20:25:47,355 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=214, PETRI_TRANSITIONS=201} [2022-11-18 20:25:47,356 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 14 predicate places. [2022-11-18 20:25:47,356 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 201 transitions, 484 flow [2022-11-18 20:25:47,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.75) internal successors, (755), 4 states have internal predecessors, (755), 0 states have call successors, (0), 0 states 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 20:25:47,357 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:47,357 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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 20:25:47,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:25:47,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:25:47,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:47,358 INFO L85 PathProgramCache]: Analyzing trace with hash 422358850, now seen corresponding path program 1 times [2022-11-18 20:25:47,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:47,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174610371] [2022-11-18 20:25:47,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:47,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:25:47,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:47,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174610371] [2022-11-18 20:25:47,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174610371] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:47,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29794102] [2022-11-18 20:25:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:47,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:47,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:47,615 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:47,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:25:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:47,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:25:47,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:25:47,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:25:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:25:47,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29794102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:25:47,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:25:47,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:25:47,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940130736] [2022-11-18 20:25:47,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:25:47,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:25:47,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:47,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:25:47,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:25:47,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-18 20:25:47,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 201 transitions, 484 flow. Second operand has 18 states, 18 states have (on average 190.05555555555554) internal successors, (3421), 18 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states 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 20:25:47,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:47,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-18 20:25:47,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:48,216 INFO L130 PetriNetUnfolder]: 3/240 cut-off events. [2022-11-18 20:25:48,216 INFO L131 PetriNetUnfolder]: For 59/60 co-relation queries the response was YES. [2022-11-18 20:25:48,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 240 events. 3/240 cut-off events. For 59/60 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 387 event pairs, 0 based on Foata normal form. 4/227 useless extension candidates. Maximal degree in co-relation 216. Up to 9 conditions per place. [2022-11-18 20:25:48,218 INFO L137 encePairwiseOnDemand]: 224/230 looper letters, 34 selfloop transitions, 21 changer transitions 0/236 dead transitions. [2022-11-18 20:25:48,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 236 transitions, 748 flow [2022-11-18 20:25:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:25:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:25:48,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3986 transitions. [2022-11-18 20:25:48,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8252587991718426 [2022-11-18 20:25:48,229 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3986 transitions. [2022-11-18 20:25:48,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3986 transitions. [2022-11-18 20:25:48,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:48,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3986 transitions. [2022-11-18 20:25:48,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 189.8095238095238) internal successors, (3986), 21 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states 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 20:25:48,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 230.0) internal successors, (5060), 22 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states 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 20:25:48,251 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 230.0) internal successors, (5060), 22 states have internal predecessors, (5060), 0 states have call successors, (0), 0 states 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 20:25:48,251 INFO L175 Difference]: Start difference. First operand has 214 places, 201 transitions, 484 flow. Second operand 21 states and 3986 transitions. [2022-11-18 20:25:48,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 236 transitions, 748 flow [2022-11-18 20:25:48,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 236 transitions, 740 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:25:48,257 INFO L231 Difference]: Finished difference. Result has 235 places, 214 transitions, 632 flow [2022-11-18 20:25:48,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=632, PETRI_PLACES=235, PETRI_TRANSITIONS=214} [2022-11-18 20:25:48,259 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 35 predicate places. [2022-11-18 20:25:48,259 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 214 transitions, 632 flow [2022-11-18 20:25:48,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 190.05555555555554) internal successors, (3421), 18 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states 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 20:25:48,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:48,261 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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 20:25:48,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:25:48,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:25:48,467 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:25:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1872758206, now seen corresponding path program 2 times [2022-11-18 20:25:48,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:48,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641294336] [2022-11-18 20:25:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:48,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:25:48,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:48,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641294336] [2022-11-18 20:25:48,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641294336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:48,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499961349] [2022-11-18 20:25:48,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:25:48,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:48,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:48,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:48,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:25:49,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:25:49,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:25:49,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:25:49,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:25:49,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:25:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:25:49,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499961349] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:25:49,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:25:49,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:25:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130898433] [2022-11-18 20:25:49,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:25:49,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:25:49,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:25:49,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:25:49,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 230 [2022-11-18 20:25:49,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 214 transitions, 632 flow. Second operand has 23 states, 23 states have (on average 190.30434782608697) internal successors, (4377), 23 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states 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 20:25:49,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:49,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 230 [2022-11-18 20:25:49,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:49,914 INFO L130 PetriNetUnfolder]: 3/261 cut-off events. [2022-11-18 20:25:49,915 INFO L131 PetriNetUnfolder]: For 226/227 co-relation queries the response was YES. [2022-11-18 20:25:49,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 261 events. 3/261 cut-off events. For 226/227 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 388 event pairs, 0 based on Foata normal form. 3/247 useless extension candidates. Maximal degree in co-relation 342. Up to 12 conditions per place. [2022-11-18 20:25:49,917 INFO L137 encePairwiseOnDemand]: 224/230 looper letters, 46 selfloop transitions, 30 changer transitions 0/257 dead transitions. [2022-11-18 20:25:49,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 257 transitions, 994 flow [2022-11-18 20:25:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:25:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:25:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5689 transitions. [2022-11-18 20:25:49,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8244927536231884 [2022-11-18 20:25:49,931 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5689 transitions. [2022-11-18 20:25:49,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5689 transitions. [2022-11-18 20:25:49,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:49,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5689 transitions. [2022-11-18 20:25:49,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 189.63333333333333) internal successors, (5689), 30 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states 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 20:25:49,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 230.0) internal successors, (7130), 31 states have internal predecessors, (7130), 0 states have call successors, (0), 0 states 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 20:25:49,978 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 230.0) internal successors, (7130), 31 states have internal predecessors, (7130), 0 states have call successors, (0), 0 states 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 20:25:49,978 INFO L175 Difference]: Start difference. First operand has 235 places, 214 transitions, 632 flow. Second operand 30 states and 5689 transitions. [2022-11-18 20:25:49,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 257 transitions, 994 flow [2022-11-18 20:25:49,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 257 transitions, 914 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-18 20:25:49,987 INFO L231 Difference]: Finished difference. Result has 260 places, 224 transitions, 730 flow [2022-11-18 20:25:49,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=730, PETRI_PLACES=260, PETRI_TRANSITIONS=224} [2022-11-18 20:25:49,989 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 60 predicate places. [2022-11-18 20:25:49,990 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 224 transitions, 730 flow [2022-11-18 20:25:49,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 190.30434782608697) internal successors, (4377), 23 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states 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 20:25:49,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:49,992 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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 20:25:49,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 20:25:50,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:50,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-18 20:25:50,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:50,201 INFO L85 PathProgramCache]: Analyzing trace with hash 641383990, now seen corresponding path program 3 times [2022-11-18 20:25:50,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:50,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545643573] [2022-11-18 20:25:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:50,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:25:50,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:25:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:25:50,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:25:50,298 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:25:50,299 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-11-18 20:25:50,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-18 20:25:50,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-18 20:25:50,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-18 20:25:50,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-18 20:25:50,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-18 20:25:50,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-18 20:25:50,302 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-18 20:25:50,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-18 20:25:50,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-18 20:25:50,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-18 20:25:50,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-18 20:25:50,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-18 20:25:50,303 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-18 20:25:50,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2022-11-18 20:25:50,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2022-11-18 20:25:50,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2022-11-18 20:25:50,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-18 20:25:50,304 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-18 20:25:50,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-18 20:25:50,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-18 20:25:50,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-18 20:25:50,305 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-18 20:25:50,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:25:50,306 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2022-11-18 20:25:50,308 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:25:50,308 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 20:25:50,344 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:25:50,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 316 transitions, 650 flow [2022-11-18 20:25:50,444 INFO L130 PetriNetUnfolder]: 75/511 cut-off events. [2022-11-18 20:25:50,444 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-11-18 20:25:50,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 511 events. 75/511 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2102 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 311. Up to 12 conditions per place. [2022-11-18 20:25:50,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 316 transitions, 650 flow [2022-11-18 20:25:50,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 316 transitions, 650 flow [2022-11-18 20:25:50,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:25:50,456 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;@586121c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:25:50,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-18 20:25:50,459 INFO L130 PetriNetUnfolder]: 1/31 cut-off events. [2022-11-18 20:25:50,460 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:25:50,460 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:50,460 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] [2022-11-18 20:25:50,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:50,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:50,461 INFO L85 PathProgramCache]: Analyzing trace with hash -361822251, now seen corresponding path program 1 times [2022-11-18 20:25:50,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:50,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675264743] [2022-11-18 20:25:50,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:50,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:50,501 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 20:25:50,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:50,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675264743] [2022-11-18 20:25:50,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675264743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:50,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:50,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:50,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714407757] [2022-11-18 20:25:50,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:50,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:25:50,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:50,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:25:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:25:50,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-18 20:25:50,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 316 transitions, 650 flow. Second operand has 4 states, 4 states have (on average 259.5) internal successors, (1038), 4 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 20:25:50,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:50,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-18 20:25:50,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:50,644 INFO L130 PetriNetUnfolder]: 9/447 cut-off events. [2022-11-18 20:25:50,645 INFO L131 PetriNetUnfolder]: For 18/22 co-relation queries the response was YES. [2022-11-18 20:25:50,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 447 events. 9/447 cut-off events. For 18/22 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1747 event pairs, 0 based on Foata normal form. 90/480 useless extension candidates. Maximal degree in co-relation 296. Up to 19 conditions per place. [2022-11-18 20:25:50,651 INFO L137 encePairwiseOnDemand]: 270/316 looper letters, 19 selfloop transitions, 4 changer transitions 1/281 dead transitions. [2022-11-18 20:25:50,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 281 transitions, 626 flow [2022-11-18 20:25:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:50,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:25:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1356 transitions. [2022-11-18 20:25:50,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8582278481012658 [2022-11-18 20:25:50,655 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1356 transitions. [2022-11-18 20:25:50,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1356 transitions. [2022-11-18 20:25:50,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:50,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1356 transitions. [2022-11-18 20:25:50,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 271.2) internal successors, (1356), 5 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states 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 20:25:50,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 20:25:50,663 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 20:25:50,663 INFO L175 Difference]: Start difference. First operand has 276 places, 316 transitions, 650 flow. Second operand 5 states and 1356 transitions. [2022-11-18 20:25:50,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 281 transitions, 626 flow [2022-11-18 20:25:50,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 281 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:25:50,669 INFO L231 Difference]: Finished difference. Result has 280 places, 276 transitions, 596 flow [2022-11-18 20:25:50,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=596, PETRI_PLACES=280, PETRI_TRANSITIONS=276} [2022-11-18 20:25:50,673 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 4 predicate places. [2022-11-18 20:25:50,673 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 276 transitions, 596 flow [2022-11-18 20:25:50,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 259.5) internal successors, (1038), 4 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 20:25:50,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:50,674 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:50,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:25:50,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:50,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:50,675 INFO L85 PathProgramCache]: Analyzing trace with hash -284589555, now seen corresponding path program 1 times [2022-11-18 20:25:50,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:50,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130432930] [2022-11-18 20:25:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:50,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:25:50,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:50,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130432930] [2022-11-18 20:25:50,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130432930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:50,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:50,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:50,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056212083] [2022-11-18 20:25:50,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:50,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:25:50,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:50,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:25:50,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:25:50,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-18 20:25:50,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 276 transitions, 596 flow. Second operand has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states 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 20:25:50,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:50,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-18 20:25:50,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:50,847 INFO L130 PetriNetUnfolder]: 9/445 cut-off events. [2022-11-18 20:25:50,848 INFO L131 PetriNetUnfolder]: For 21/25 co-relation queries the response was YES. [2022-11-18 20:25:50,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 445 events. 9/445 cut-off events. For 21/25 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1743 event pairs, 0 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 446. Up to 11 conditions per place. [2022-11-18 20:25:50,854 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 11 selfloop transitions, 8 changer transitions 0/276 dead transitions. [2022-11-18 20:25:50,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 276 transitions, 632 flow [2022-11-18 20:25:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:50,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:25:50,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1307 transitions. [2022-11-18 20:25:50,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8272151898734177 [2022-11-18 20:25:50,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1307 transitions. [2022-11-18 20:25:50,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1307 transitions. [2022-11-18 20:25:50,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:50,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1307 transitions. [2022-11-18 20:25:50,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 261.4) internal successors, (1307), 5 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states 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 20:25:50,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 20:25:50,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 20:25:50,896 INFO L175 Difference]: Start difference. First operand has 280 places, 276 transitions, 596 flow. Second operand 5 states and 1307 transitions. [2022-11-18 20:25:50,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 276 transitions, 632 flow [2022-11-18 20:25:50,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 276 transitions, 630 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:25:50,902 INFO L231 Difference]: Finished difference. Result has 282 places, 276 transitions, 614 flow [2022-11-18 20:25:50,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=614, PETRI_PLACES=282, PETRI_TRANSITIONS=276} [2022-11-18 20:25:50,904 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 6 predicate places. [2022-11-18 20:25:50,904 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 276 transitions, 614 flow [2022-11-18 20:25:50,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.25) internal successors, (1045), 4 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states 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 20:25:50,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:50,905 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:50,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:25:50,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:50,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash -232340710, now seen corresponding path program 1 times [2022-11-18 20:25:50,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:50,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758724665] [2022-11-18 20:25:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:50,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:50,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:50,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758724665] [2022-11-18 20:25:50,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758724665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:50,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568784375] [2022-11-18 20:25:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:50,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:50,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:50,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:51,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:25:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:51,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:25:51,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:51,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:25:51,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568784375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:51,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:25:51,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:25:51,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793942058] [2022-11-18 20:25:51,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:51,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:25:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:51,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:25:51,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:25:51,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-18 20:25:51,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 276 transitions, 614 flow. Second operand has 5 states, 5 states have (on average 260.8) internal successors, (1304), 5 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states 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 20:25:51,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:51,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-18 20:25:51,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:51,277 INFO L130 PetriNetUnfolder]: 9/444 cut-off events. [2022-11-18 20:25:51,277 INFO L131 PetriNetUnfolder]: For 28/32 co-relation queries the response was YES. [2022-11-18 20:25:51,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 444 events. 9/444 cut-off events. For 28/32 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1732 event pairs, 0 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 444. Up to 14 conditions per place. [2022-11-18 20:25:51,283 INFO L137 encePairwiseOnDemand]: 312/316 looper letters, 13 selfloop transitions, 5 changer transitions 0/275 dead transitions. [2022-11-18 20:25:51,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 275 transitions, 646 flow [2022-11-18 20:25:51,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:25:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:25:51,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1047 transitions. [2022-11-18 20:25:51,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8283227848101266 [2022-11-18 20:25:51,287 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1047 transitions. [2022-11-18 20:25:51,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1047 transitions. [2022-11-18 20:25:51,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:51,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1047 transitions. [2022-11-18 20:25:51,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states 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 20:25:51,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states 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 20:25:51,293 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 316.0) internal successors, (1580), 5 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states 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 20:25:51,293 INFO L175 Difference]: Start difference. First operand has 282 places, 276 transitions, 614 flow. Second operand 4 states and 1047 transitions. [2022-11-18 20:25:51,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 275 transitions, 646 flow [2022-11-18 20:25:51,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 275 transitions, 634 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:25:51,299 INFO L231 Difference]: Finished difference. Result has 281 places, 275 transitions, 608 flow [2022-11-18 20:25:51,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=608, PETRI_PLACES=281, PETRI_TRANSITIONS=275} [2022-11-18 20:25:51,301 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 5 predicate places. [2022-11-18 20:25:51,301 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 275 transitions, 608 flow [2022-11-18 20:25:51,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 260.8) internal successors, (1304), 5 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states 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 20:25:51,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:51,302 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] [2022-11-18 20:25:51,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:25:51,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:25:51,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:51,509 INFO L85 PathProgramCache]: Analyzing trace with hash -589345629, now seen corresponding path program 1 times [2022-11-18 20:25:51,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:51,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520328131] [2022-11-18 20:25:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:51,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:51,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:51,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520328131] [2022-11-18 20:25:51,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520328131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:51,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842014635] [2022-11-18 20:25:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:51,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:51,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:51,571 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:51,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:25:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:51,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:25:51,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:51,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:25:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:51,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842014635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:25:51,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:25:51,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:25:51,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613560995] [2022-11-18 20:25:51,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:25:51,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:25:51,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:25:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:25:51,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-18 20:25:51,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 275 transitions, 608 flow. Second operand has 10 states, 10 states have (on average 260.7) internal successors, (2607), 10 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states 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 20:25:51,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:51,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-18 20:25:51,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:51,958 INFO L130 PetriNetUnfolder]: 9/452 cut-off events. [2022-11-18 20:25:51,958 INFO L131 PetriNetUnfolder]: For 34/38 co-relation queries the response was YES. [2022-11-18 20:25:51,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 452 events. 9/452 cut-off events. For 34/38 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1725 event pairs, 0 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 434. Up to 11 conditions per place. [2022-11-18 20:25:51,964 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 20 selfloop transitions, 9 changer transitions 0/286 dead transitions. [2022-11-18 20:25:51,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 286 transitions, 704 flow [2022-11-18 20:25:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:25:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:25:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2353 transitions. [2022-11-18 20:25:51,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273558368495078 [2022-11-18 20:25:51,974 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2353 transitions. [2022-11-18 20:25:51,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2353 transitions. [2022-11-18 20:25:51,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:51,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2353 transitions. [2022-11-18 20:25:51,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 261.44444444444446) internal successors, (2353), 9 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states 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 20:25:51,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states 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 20:25:51,989 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states 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 20:25:51,990 INFO L175 Difference]: Start difference. First operand has 281 places, 275 transitions, 608 flow. Second operand 9 states and 2353 transitions. [2022-11-18 20:25:51,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 286 transitions, 704 flow [2022-11-18 20:25:51,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 286 transitions, 690 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:25:51,995 INFO L231 Difference]: Finished difference. Result has 290 places, 279 transitions, 654 flow [2022-11-18 20:25:51,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=654, PETRI_PLACES=290, PETRI_TRANSITIONS=279} [2022-11-18 20:25:51,997 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 14 predicate places. [2022-11-18 20:25:51,998 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 279 transitions, 654 flow [2022-11-18 20:25:51,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 260.7) internal successors, (2607), 10 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states 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 20:25:51,999 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:51,999 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:25:52,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:25:52,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:52,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:52,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash -740237917, now seen corresponding path program 2 times [2022-11-18 20:25:52,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:52,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708222254] [2022-11-18 20:25:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:52,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:25:52,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:52,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708222254] [2022-11-18 20:25:52,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708222254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:52,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:52,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803692697] [2022-11-18 20:25:52,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:52,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:25:52,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:52,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:25:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:25:52,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-18 20:25:52,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 279 transitions, 654 flow. Second operand has 4 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states 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 20:25:52,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:52,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-18 20:25:52,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:52,397 INFO L130 PetriNetUnfolder]: 7/398 cut-off events. [2022-11-18 20:25:52,397 INFO L131 PetriNetUnfolder]: For 42/74 co-relation queries the response was YES. [2022-11-18 20:25:52,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 398 events. 7/398 cut-off events. For 42/74 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1370 event pairs, 0 based on Foata normal form. 3/357 useless extension candidates. Maximal degree in co-relation 402. Up to 21 conditions per place. [2022-11-18 20:25:52,403 INFO L137 encePairwiseOnDemand]: 309/316 looper letters, 19 selfloop transitions, 4 changer transitions 0/286 dead transitions. [2022-11-18 20:25:52,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 286 transitions, 714 flow [2022-11-18 20:25:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:25:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1316 transitions. [2022-11-18 20:25:52,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8329113924050633 [2022-11-18 20:25:52,406 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1316 transitions. [2022-11-18 20:25:52,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1316 transitions. [2022-11-18 20:25:52,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:52,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1316 transitions. [2022-11-18 20:25:52,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 263.2) internal successors, (1316), 5 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states 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 20:25:52,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 20:25:52,413 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 20:25:52,413 INFO L175 Difference]: Start difference. First operand has 290 places, 279 transitions, 654 flow. Second operand 5 states and 1316 transitions. [2022-11-18 20:25:52,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 286 transitions, 714 flow [2022-11-18 20:25:52,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 286 transitions, 698 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 20:25:52,419 INFO L231 Difference]: Finished difference. Result has 293 places, 282 transitions, 670 flow [2022-11-18 20:25:52,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=670, PETRI_PLACES=293, PETRI_TRANSITIONS=282} [2022-11-18 20:25:52,420 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 17 predicate places. [2022-11-18 20:25:52,421 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 282 transitions, 670 flow [2022-11-18 20:25:52,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states 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 20:25:52,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:52,421 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:25:52,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:25:52,422 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:52,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:52,422 INFO L85 PathProgramCache]: Analyzing trace with hash -239359324, now seen corresponding path program 1 times [2022-11-18 20:25:52,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:52,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668472084] [2022-11-18 20:25:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:52,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:52,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:52,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668472084] [2022-11-18 20:25:52,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668472084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:52,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260012225] [2022-11-18 20:25:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:52,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:52,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:52,591 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:52,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:25:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:52,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:25:52,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:52,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:25:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:52,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260012225] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:25:52,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:25:52,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:25:52,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893243706] [2022-11-18 20:25:52,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:25:52,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:25:52,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:52,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:25:52,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:25:52,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-18 20:25:52,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 282 transitions, 670 flow. Second operand has 18 states, 18 states have (on average 261.05555555555554) internal successors, (4699), 18 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states 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 20:25:52,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:52,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-18 20:25:52,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:53,218 INFO L130 PetriNetUnfolder]: 7/426 cut-off events. [2022-11-18 20:25:53,218 INFO L131 PetriNetUnfolder]: For 73/77 co-relation queries the response was YES. [2022-11-18 20:25:53,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 426 events. 7/426 cut-off events. For 73/77 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1358 event pairs, 0 based on Foata normal form. 4/390 useless extension candidates. Maximal degree in co-relation 393. Up to 11 conditions per place. [2022-11-18 20:25:53,225 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 36 selfloop transitions, 21 changer transitions 0/317 dead transitions. [2022-11-18 20:25:53,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 317 transitions, 938 flow [2022-11-18 20:25:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:25:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:25:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5479 transitions. [2022-11-18 20:25:53,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8256479807112719 [2022-11-18 20:25:53,233 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5479 transitions. [2022-11-18 20:25:53,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5479 transitions. [2022-11-18 20:25:53,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:53,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5479 transitions. [2022-11-18 20:25:53,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 260.9047619047619) internal successors, (5479), 21 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states 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 20:25:53,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 316.0) internal successors, (6952), 22 states have internal predecessors, (6952), 0 states have call successors, (0), 0 states 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 20:25:53,258 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 316.0) internal successors, (6952), 22 states have internal predecessors, (6952), 0 states have call successors, (0), 0 states 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 20:25:53,258 INFO L175 Difference]: Start difference. First operand has 293 places, 282 transitions, 670 flow. Second operand 21 states and 5479 transitions. [2022-11-18 20:25:53,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 317 transitions, 938 flow [2022-11-18 20:25:53,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 317 transitions, 936 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:25:53,265 INFO L231 Difference]: Finished difference. Result has 317 places, 295 transitions, 824 flow [2022-11-18 20:25:53,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=824, PETRI_PLACES=317, PETRI_TRANSITIONS=295} [2022-11-18 20:25:53,267 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 41 predicate places. [2022-11-18 20:25:53,267 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 295 transitions, 824 flow [2022-11-18 20:25:53,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 261.05555555555554) internal successors, (4699), 18 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states 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 20:25:53,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:53,269 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:25:53,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:25:53,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:53,475 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:53,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1430030500, now seen corresponding path program 2 times [2022-11-18 20:25:53,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:53,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976750436] [2022-11-18 20:25:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:53,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:53,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976750436] [2022-11-18 20:25:53,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976750436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:53,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763655237] [2022-11-18 20:25:53,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:25:53,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:53,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:53,863 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:53,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:25:53,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:25:53,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:25:53,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:25:53,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-18 20:25:54,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:25:54,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763655237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:54,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:25:54,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-18 20:25:54,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150552914] [2022-11-18 20:25:54,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:54,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:25:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:54,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:25:54,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:25:54,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 316 [2022-11-18 20:25:54,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 295 transitions, 824 flow. Second operand has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states 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 20:25:54,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:54,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 316 [2022-11-18 20:25:54,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:54,601 INFO L130 PetriNetUnfolder]: 50/931 cut-off events. [2022-11-18 20:25:54,601 INFO L131 PetriNetUnfolder]: For 263/295 co-relation queries the response was YES. [2022-11-18 20:25:54,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 931 events. 50/931 cut-off events. For 263/295 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5879 event pairs, 11 based on Foata normal form. 4/825 useless extension candidates. Maximal degree in co-relation 1081. Up to 43 conditions per place. [2022-11-18 20:25:54,611 INFO L137 encePairwiseOnDemand]: 309/316 looper letters, 26 selfloop transitions, 6 changer transitions 0/304 dead transitions. [2022-11-18 20:25:54,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 304 transitions, 946 flow [2022-11-18 20:25:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:25:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:25:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1790 transitions. [2022-11-18 20:25:54,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8092224231464737 [2022-11-18 20:25:54,615 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1790 transitions. [2022-11-18 20:25:54,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1790 transitions. [2022-11-18 20:25:54,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:54,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1790 transitions. [2022-11-18 20:25:54,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 255.71428571428572) internal successors, (1790), 7 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states 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 20:25:54,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states 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 20:25:54,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states 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 20:25:54,626 INFO L175 Difference]: Start difference. First operand has 317 places, 295 transitions, 824 flow. Second operand 7 states and 1790 transitions. [2022-11-18 20:25:54,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 304 transitions, 946 flow [2022-11-18 20:25:54,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 304 transitions, 890 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-18 20:25:54,633 INFO L231 Difference]: Finished difference. Result has 314 places, 294 transitions, 778 flow [2022-11-18 20:25:54,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=778, PETRI_PLACES=314, PETRI_TRANSITIONS=294} [2022-11-18 20:25:54,635 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 38 predicate places. [2022-11-18 20:25:54,635 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 294 transitions, 778 flow [2022-11-18 20:25:54,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states 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 20:25:54,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:54,636 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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] [2022-11-18 20:25:54,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:25:54,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:25:54,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:54,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:54,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2066655228, now seen corresponding path program 1 times [2022-11-18 20:25:54,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:54,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868815262] [2022-11-18 20:25:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:54,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-18 20:25:54,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868815262] [2022-11-18 20:25:54,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868815262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:54,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:54,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:54,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511354290] [2022-11-18 20:25:54,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:54,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:25:54,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:54,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:25:54,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:25:54,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-18 20:25:54,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 294 transitions, 778 flow. Second operand has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states 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 20:25:54,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:54,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-18 20:25:54,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:55,050 INFO L130 PetriNetUnfolder]: 7/424 cut-off events. [2022-11-18 20:25:55,051 INFO L131 PetriNetUnfolder]: For 86/116 co-relation queries the response was YES. [2022-11-18 20:25:55,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 424 events. 7/424 cut-off events. For 86/116 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1350 event pairs, 0 based on Foata normal form. 7/393 useless extension candidates. Maximal degree in co-relation 448. Up to 10 conditions per place. [2022-11-18 20:25:55,063 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 11 selfloop transitions, 8 changer transitions 0/294 dead transitions. [2022-11-18 20:25:55,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 294 transitions, 814 flow [2022-11-18 20:25:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:25:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1307 transitions. [2022-11-18 20:25:55,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8272151898734177 [2022-11-18 20:25:55,066 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1307 transitions. [2022-11-18 20:25:55,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1307 transitions. [2022-11-18 20:25:55,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:55,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1307 transitions. [2022-11-18 20:25:55,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 261.4) internal successors, (1307), 5 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states 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 20:25:55,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 20:25:55,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 316.0) internal successors, (1896), 6 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states 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 20:25:55,073 INFO L175 Difference]: Start difference. First operand has 314 places, 294 transitions, 778 flow. Second operand 5 states and 1307 transitions. [2022-11-18 20:25:55,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 294 transitions, 814 flow [2022-11-18 20:25:55,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 294 transitions, 802 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:25:55,080 INFO L231 Difference]: Finished difference. Result has 312 places, 294 transitions, 786 flow [2022-11-18 20:25:55,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=312, PETRI_TRANSITIONS=294} [2022-11-18 20:25:55,082 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 36 predicate places. [2022-11-18 20:25:55,082 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 294 transitions, 786 flow [2022-11-18 20:25:55,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states 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 20:25:55,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:55,083 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:25:55,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:25:55,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:55,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:55,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1381273488, now seen corresponding path program 1 times [2022-11-18 20:25:55,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:55,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123273199] [2022-11-18 20:25:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:55,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:55,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:55,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123273199] [2022-11-18 20:25:55,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123273199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:55,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309104124] [2022-11-18 20:25:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:55,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:55,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:55,495 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:55,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:25:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:55,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:25:55,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:55,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:25:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:55,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309104124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:25:55,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:25:55,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:25:55,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699398268] [2022-11-18 20:25:55,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:25:55,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:25:55,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:55,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:25:55,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:25:55,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-18 20:25:55,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 294 transitions, 786 flow. Second operand has 23 states, 23 states have (on average 261.30434782608694) internal successors, (6010), 23 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states 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 20:25:55,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:55,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-18 20:25:55,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:56,503 INFO L130 PetriNetUnfolder]: 7/445 cut-off events. [2022-11-18 20:25:56,505 INFO L131 PetriNetUnfolder]: For 184/188 co-relation queries the response was YES. [2022-11-18 20:25:56,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 445 events. 7/445 cut-off events. For 184/188 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1347 event pairs, 0 based on Foata normal form. 3/409 useless extension candidates. Maximal degree in co-relation 483. Up to 12 conditions per place. [2022-11-18 20:25:56,510 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 48 selfloop transitions, 30 changer transitions 0/337 dead transitions. [2022-11-18 20:25:56,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 337 transitions, 1128 flow [2022-11-18 20:25:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:25:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:25:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7821 transitions. [2022-11-18 20:25:56,524 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825 [2022-11-18 20:25:56,524 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7821 transitions. [2022-11-18 20:25:56,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7821 transitions. [2022-11-18 20:25:56,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:56,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7821 transitions. [2022-11-18 20:25:56,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 260.7) internal successors, (7821), 30 states have internal predecessors, (7821), 0 states have call successors, (0), 0 states 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 20:25:56,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 316.0) internal successors, (9796), 31 states have internal predecessors, (9796), 0 states have call successors, (0), 0 states 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 20:25:56,559 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 316.0) internal successors, (9796), 31 states have internal predecessors, (9796), 0 states have call successors, (0), 0 states 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 20:25:56,559 INFO L175 Difference]: Start difference. First operand has 312 places, 294 transitions, 786 flow. Second operand 30 states and 7821 transitions. [2022-11-18 20:25:56,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 337 transitions, 1128 flow [2022-11-18 20:25:56,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 337 transitions, 1116 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:25:56,568 INFO L231 Difference]: Finished difference. Result has 342 places, 304 transitions, 928 flow [2022-11-18 20:25:56,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=928, PETRI_PLACES=342, PETRI_TRANSITIONS=304} [2022-11-18 20:25:56,569 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 66 predicate places. [2022-11-18 20:25:56,569 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 304 transitions, 928 flow [2022-11-18 20:25:56,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 261.30434782608694) internal successors, (6010), 23 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states 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 20:25:56,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:56,571 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:56,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 20:25:56,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:25:56,777 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:56,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1274341688, now seen corresponding path program 2 times [2022-11-18 20:25:56,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:56,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275167713] [2022-11-18 20:25:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:56,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:25:56,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:56,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275167713] [2022-11-18 20:25:56,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275167713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:56,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:56,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:25:56,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478326978] [2022-11-18 20:25:56,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:56,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:25:56,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:56,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:25:56,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:25:56,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 316 [2022-11-18 20:25:56,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 304 transitions, 928 flow. Second operand has 5 states, 5 states have (on average 254.8) internal successors, (1274), 5 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states 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 20:25:56,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:56,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 316 [2022-11-18 20:25:56,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:57,221 INFO L130 PetriNetUnfolder]: 46/1095 cut-off events. [2022-11-18 20:25:57,221 INFO L131 PetriNetUnfolder]: For 318/335 co-relation queries the response was YES. [2022-11-18 20:25:57,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1477 conditions, 1095 events. 46/1095 cut-off events. For 318/335 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 7296 event pairs, 16 based on Foata normal form. 0/974 useless extension candidates. Maximal degree in co-relation 1214. Up to 49 conditions per place. [2022-11-18 20:25:57,235 INFO L137 encePairwiseOnDemand]: 310/316 looper letters, 22 selfloop transitions, 5 changer transitions 0/311 dead transitions. [2022-11-18 20:25:57,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 311 transitions, 1028 flow [2022-11-18 20:25:57,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:25:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:25:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1546 transitions. [2022-11-18 20:25:57,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8154008438818565 [2022-11-18 20:25:57,238 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1546 transitions. [2022-11-18 20:25:57,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1546 transitions. [2022-11-18 20:25:57,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:57,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1546 transitions. [2022-11-18 20:25:57,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.6666666666667) internal successors, (1546), 6 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states 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 20:25:57,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 316.0) internal successors, (2212), 7 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states 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 20:25:57,265 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 316.0) internal successors, (2212), 7 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states 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 20:25:57,265 INFO L175 Difference]: Start difference. First operand has 342 places, 304 transitions, 928 flow. Second operand 6 states and 1546 transitions. [2022-11-18 20:25:57,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 311 transitions, 1028 flow [2022-11-18 20:25:57,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 311 transitions, 982 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-18 20:25:57,274 INFO L231 Difference]: Finished difference. Result has 328 places, 303 transitions, 890 flow [2022-11-18 20:25:57,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=890, PETRI_PLACES=328, PETRI_TRANSITIONS=303} [2022-11-18 20:25:57,276 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 52 predicate places. [2022-11-18 20:25:57,276 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 303 transitions, 890 flow [2022-11-18 20:25:57,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 254.8) internal successors, (1274), 5 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states 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 20:25:57,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:57,277 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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] [2022-11-18 20:25:57,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:25:57,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:57,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:57,278 INFO L85 PathProgramCache]: Analyzing trace with hash -361493628, now seen corresponding path program 1 times [2022-11-18 20:25:57,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:57,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760238579] [2022-11-18 20:25:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:25:57,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:57,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760238579] [2022-11-18 20:25:57,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760238579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:57,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324695939] [2022-11-18 20:25:57,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:57,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:57,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:57,411 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:57,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:25:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:57,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:25:57,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:25:57,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:25:57,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324695939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:57,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:25:57,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:25:57,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547946503] [2022-11-18 20:25:57,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:57,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:25:57,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:57,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:25:57,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:25:57,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-18 20:25:57,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 303 transitions, 890 flow. Second operand has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states 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 20:25:57,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:57,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-18 20:25:57,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:57,757 INFO L130 PetriNetUnfolder]: 7/443 cut-off events. [2022-11-18 20:25:57,758 INFO L131 PetriNetUnfolder]: For 199/227 co-relation queries the response was YES. [2022-11-18 20:25:57,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 443 events. 7/443 cut-off events. For 199/227 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1334 event pairs, 0 based on Foata normal form. 6/411 useless extension candidates. Maximal degree in co-relation 524. Up to 13 conditions per place. [2022-11-18 20:25:57,763 INFO L137 encePairwiseOnDemand]: 311/316 looper letters, 15 selfloop transitions, 6 changer transitions 0/305 dead transitions. [2022-11-18 20:25:57,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 305 transitions, 934 flow [2022-11-18 20:25:57,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:25:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:25:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1828 transitions. [2022-11-18 20:25:57,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8264014466546112 [2022-11-18 20:25:57,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1828 transitions. [2022-11-18 20:25:57,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1828 transitions. [2022-11-18 20:25:57,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:57,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1828 transitions. [2022-11-18 20:25:57,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.14285714285717) internal successors, (1828), 7 states have internal predecessors, (1828), 0 states have call successors, (0), 0 states 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 20:25:57,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states 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 20:25:57,777 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 316.0) internal successors, (2528), 8 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states 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 20:25:57,777 INFO L175 Difference]: Start difference. First operand has 328 places, 303 transitions, 890 flow. Second operand 7 states and 1828 transitions. [2022-11-18 20:25:57,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 305 transitions, 934 flow [2022-11-18 20:25:57,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 305 transitions, 924 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:25:57,786 INFO L231 Difference]: Finished difference. Result has 328 places, 302 transitions, 888 flow [2022-11-18 20:25:57,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=888, PETRI_PLACES=328, PETRI_TRANSITIONS=302} [2022-11-18 20:25:57,787 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, 52 predicate places. [2022-11-18 20:25:57,787 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 302 transitions, 888 flow [2022-11-18 20:25:57,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states 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 20:25:57,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:57,788 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:57,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:25:57,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:57,998 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:57,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:57,999 INFO L85 PathProgramCache]: Analyzing trace with hash 622050150, now seen corresponding path program 1 times [2022-11-18 20:25:57,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:57,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944201680] [2022-11-18 20:25:57,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:57,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:25:58,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:58,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944201680] [2022-11-18 20:25:58,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944201680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:58,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173328837] [2022-11-18 20:25:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:58,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:58,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:58,120 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:58,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:25:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:58,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:25:58,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:25:58,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:25:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:25:58,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173328837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:25:58,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:25:58,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:25:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506785395] [2022-11-18 20:25:58,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:25:58,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:25:58,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:25:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:25:58,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 316 [2022-11-18 20:25:58,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 302 transitions, 888 flow. Second operand has 10 states, 10 states have (on average 260.9) internal successors, (2609), 10 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states 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 20:25:58,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:58,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 316 [2022-11-18 20:25:58,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:58,470 INFO L130 PetriNetUnfolder]: 3/275 cut-off events. [2022-11-18 20:25:58,470 INFO L131 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2022-11-18 20:25:58,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 275 events. 3/275 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 363 event pairs, 0 based on Foata normal form. 2/261 useless extension candidates. Maximal degree in co-relation 357. Up to 12 conditions per place. [2022-11-18 20:25:58,473 INFO L137 encePairwiseOnDemand]: 311/316 looper letters, 13 selfloop transitions, 7 changer transitions 0/236 dead transitions. [2022-11-18 20:25:58,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 236 transitions, 790 flow [2022-11-18 20:25:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:25:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:25:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2344 transitions. [2022-11-18 20:25:58,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8241912798874824 [2022-11-18 20:25:58,477 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2344 transitions. [2022-11-18 20:25:58,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2344 transitions. [2022-11-18 20:25:58,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:58,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2344 transitions. [2022-11-18 20:25:58,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 260.44444444444446) internal successors, (2344), 9 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:25:58,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states 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 20:25:58,487 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 316.0) internal successors, (3160), 10 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states 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 20:25:58,487 INFO L175 Difference]: Start difference. First operand has 328 places, 302 transitions, 888 flow. Second operand 9 states and 2344 transitions. [2022-11-18 20:25:58,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 236 transitions, 790 flow [2022-11-18 20:25:58,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 236 transitions, 773 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-18 20:25:58,494 INFO L231 Difference]: Finished difference. Result has 262 places, 231 transitions, 735 flow [2022-11-18 20:25:58,495 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=735, PETRI_PLACES=262, PETRI_TRANSITIONS=231} [2022-11-18 20:25:58,495 INFO L288 CegarLoopForPetriNet]: 276 programPoint places, -14 predicate places. [2022-11-18 20:25:58,495 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 231 transitions, 735 flow [2022-11-18 20:25:58,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 260.9) internal successors, (2609), 10 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states 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 20:25:58,496 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:58,497 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 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] [2022-11-18 20:25:58,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:25:58,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:58,703 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 20:25:58,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1766104511, now seen corresponding path program 1 times [2022-11-18 20:25:58,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:58,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461574330] [2022-11-18 20:25:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:25:58,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:25:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:25:58,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:25:58,778 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:25:58,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-18 20:25:58,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-11-18 20:25:58,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-11-18 20:25:58,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-11-18 20:25:58,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-11-18 20:25:58,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-11-18 20:25:58,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-11-18 20:25:58,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-11-18 20:25:58,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-11-18 20:25:58,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-11-18 20:25:58,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-11-18 20:25:58,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-11-18 20:25:58,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-11-18 20:25:58,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-11-18 20:25:58,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-11-18 20:25:58,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-11-18 20:25:58,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-11-18 20:25:58,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-11-18 20:25:58,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-11-18 20:25:58,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-11-18 20:25:58,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-11-18 20:25:58,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-11-18 20:25:58,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-11-18 20:25:58,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-11-18 20:25:58,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-11-18 20:25:58,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-11-18 20:25:58,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-11-18 20:25:58,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-11-18 20:25:58,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-11-18 20:25:58,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:25:58,784 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:58,786 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 20:25:58,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 20:25:58,845 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:25:58,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 402 transitions, 834 flow [2022-11-18 20:25:59,007 INFO L130 PetriNetUnfolder]: 110/754 cut-off events. [2022-11-18 20:25:59,007 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-18 20:25:59,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 754 events. 110/754 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3467 event pairs, 1 based on Foata normal form. 0/584 useless extension candidates. Maximal degree in co-relation 519. Up to 16 conditions per place. [2022-11-18 20:25:59,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 402 transitions, 834 flow [2022-11-18 20:25:59,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 350 places, 402 transitions, 834 flow [2022-11-18 20:25:59,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:25:59,045 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;@586121c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:25:59,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-18 20:25:59,048 INFO L130 PetriNetUnfolder]: 1/31 cut-off events. [2022-11-18 20:25:59,048 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:25:59,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:59,049 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] [2022-11-18 20:25:59,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:25:59,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:59,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2057305049, now seen corresponding path program 1 times [2022-11-18 20:25:59,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:59,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564816235] [2022-11-18 20:25:59,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:59,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:59,082 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 20:25:59,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:59,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564816235] [2022-11-18 20:25:59,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564816235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:59,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:59,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:59,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141050377] [2022-11-18 20:25:59,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:59,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:25:59,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:59,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:25:59,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:25:59,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-18 20:25:59,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 402 transitions, 834 flow. Second operand has 4 states, 4 states have (on average 330.5) internal successors, (1322), 4 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states 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 20:25:59,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:59,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-18 20:25:59,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:59,273 INFO L130 PetriNetUnfolder]: 16/660 cut-off events. [2022-11-18 20:25:59,274 INFO L131 PetriNetUnfolder]: For 56/73 co-relation queries the response was YES. [2022-11-18 20:25:59,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 660 events. 16/660 cut-off events. For 56/73 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3023 event pairs, 1 based on Foata normal form. 208/781 useless extension candidates. Maximal degree in co-relation 480. Up to 28 conditions per place. [2022-11-18 20:25:59,285 INFO L137 encePairwiseOnDemand]: 344/402 looper letters, 21 selfloop transitions, 4 changer transitions 1/354 dead transitions. [2022-11-18 20:25:59,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 354 transitions, 788 flow [2022-11-18 20:25:59,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:25:59,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1725 transitions. [2022-11-18 20:25:59,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8582089552238806 [2022-11-18 20:25:59,289 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1725 transitions. [2022-11-18 20:25:59,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1725 transitions. [2022-11-18 20:25:59,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:59,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1725 transitions. [2022-11-18 20:25:59,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 20:25:59,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states 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 20:25:59,297 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states 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 20:25:59,297 INFO L175 Difference]: Start difference. First operand has 350 places, 402 transitions, 834 flow. Second operand 5 states and 1725 transitions. [2022-11-18 20:25:59,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 354 transitions, 788 flow [2022-11-18 20:25:59,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 354 transitions, 788 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:25:59,303 INFO L231 Difference]: Finished difference. Result has 353 places, 349 transitions, 754 flow [2022-11-18 20:25:59,304 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=754, PETRI_PLACES=353, PETRI_TRANSITIONS=349} [2022-11-18 20:25:59,304 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 3 predicate places. [2022-11-18 20:25:59,305 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 349 transitions, 754 flow [2022-11-18 20:25:59,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.5) internal successors, (1322), 4 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states 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 20:25:59,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:59,305 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:59,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:25:59,306 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:25:59,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:59,306 INFO L85 PathProgramCache]: Analyzing trace with hash -355968947, now seen corresponding path program 1 times [2022-11-18 20:25:59,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:59,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640803846] [2022-11-18 20:25:59,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:59,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:25:59,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:59,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640803846] [2022-11-18 20:25:59,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640803846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:59,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:25:59,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:25:59,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346275072] [2022-11-18 20:25:59,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:59,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:25:59,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:59,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:25:59,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:25:59,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-18 20:25:59,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 349 transitions, 754 flow. Second operand has 4 states, 4 states have (on average 332.25) internal successors, (1329), 4 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states 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 20:25:59,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:59,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-18 20:25:59,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:25:59,547 INFO L130 PetriNetUnfolder]: 16/658 cut-off events. [2022-11-18 20:25:59,548 INFO L131 PetriNetUnfolder]: For 59/76 co-relation queries the response was YES. [2022-11-18 20:25:59,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 658 events. 16/658 cut-off events. For 59/76 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3042 event pairs, 1 based on Foata normal form. 1/576 useless extension candidates. Maximal degree in co-relation 681. Up to 20 conditions per place. [2022-11-18 20:25:59,557 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 13 selfloop transitions, 8 changer transitions 0/349 dead transitions. [2022-11-18 20:25:59,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 349 transitions, 794 flow [2022-11-18 20:25:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:25:59,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:25:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1664 transitions. [2022-11-18 20:25:59,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278606965174129 [2022-11-18 20:25:59,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1664 transitions. [2022-11-18 20:25:59,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1664 transitions. [2022-11-18 20:25:59,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:25:59,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1664 transitions. [2022-11-18 20:25:59,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.8) internal successors, (1664), 5 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 20:25:59,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states 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 20:25:59,570 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states 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 20:25:59,570 INFO L175 Difference]: Start difference. First operand has 353 places, 349 transitions, 754 flow. Second operand 5 states and 1664 transitions. [2022-11-18 20:25:59,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 349 transitions, 794 flow [2022-11-18 20:25:59,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 349 transitions, 792 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:25:59,579 INFO L231 Difference]: Finished difference. Result has 355 places, 349 transitions, 772 flow [2022-11-18 20:25:59,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=772, PETRI_PLACES=355, PETRI_TRANSITIONS=349} [2022-11-18 20:25:59,580 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 5 predicate places. [2022-11-18 20:25:59,580 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 349 transitions, 772 flow [2022-11-18 20:25:59,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 332.25) internal successors, (1329), 4 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states 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 20:25:59,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:25:59,581 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:25:59,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:25:59,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:25:59,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:25:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1849865836, now seen corresponding path program 1 times [2022-11-18 20:25:59,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:25:59,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469097442] [2022-11-18 20:25:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:59,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:25:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:59,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:25:59,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469097442] [2022-11-18 20:25:59,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469097442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:25:59,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791239574] [2022-11-18 20:25:59,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:25:59,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:25:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:25:59,655 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:25:59,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:25:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:25:59,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:25:59,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:25:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:25:59,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:25:59,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791239574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:25:59,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:25:59,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:25:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247973141] [2022-11-18 20:25:59,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:25:59,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:25:59,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:25:59,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:25:59,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:25:59,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-18 20:25:59,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 349 transitions, 772 flow. Second operand has 5 states, 5 states have (on average 331.8) internal successors, (1659), 5 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states 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 20:25:59,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:25:59,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-18 20:25:59,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:00,013 INFO L130 PetriNetUnfolder]: 16/657 cut-off events. [2022-11-18 20:26:00,013 INFO L131 PetriNetUnfolder]: For 66/83 co-relation queries the response was YES. [2022-11-18 20:26:00,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 657 events. 16/657 cut-off events. For 66/83 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3040 event pairs, 1 based on Foata normal form. 1/575 useless extension candidates. Maximal degree in co-relation 679. Up to 23 conditions per place. [2022-11-18 20:26:00,025 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 15 selfloop transitions, 5 changer transitions 0/348 dead transitions. [2022-11-18 20:26:00,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 348 transitions, 808 flow [2022-11-18 20:26:00,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:26:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:26:00,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1333 transitions. [2022-11-18 20:26:00,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8289800995024875 [2022-11-18 20:26:00,028 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1333 transitions. [2022-11-18 20:26:00,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1333 transitions. [2022-11-18 20:26:00,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:00,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1333 transitions. [2022-11-18 20:26:00,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 333.25) internal successors, (1333), 4 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states 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 20:26:00,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 20:26:00,034 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states 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 20:26:00,034 INFO L175 Difference]: Start difference. First operand has 355 places, 349 transitions, 772 flow. Second operand 4 states and 1333 transitions. [2022-11-18 20:26:00,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 348 transitions, 808 flow [2022-11-18 20:26:00,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 348 transitions, 796 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:26:00,041 INFO L231 Difference]: Finished difference. Result has 354 places, 348 transitions, 766 flow [2022-11-18 20:26:00,042 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=766, PETRI_PLACES=354, PETRI_TRANSITIONS=348} [2022-11-18 20:26:00,042 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 4 predicate places. [2022-11-18 20:26:00,042 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 348 transitions, 766 flow [2022-11-18 20:26:00,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.8) internal successors, (1659), 5 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states 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 20:26:00,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:00,043 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] [2022-11-18 20:26:00,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:26:00,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 20:26:00,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:26:00,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:00,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1371806647, now seen corresponding path program 1 times [2022-11-18 20:26:00,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:00,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808305287] [2022-11-18 20:26:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:00,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:00,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:00,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808305287] [2022-11-18 20:26:00,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808305287] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:26:00,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067981066] [2022-11-18 20:26:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:00,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:00,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:26:00,309 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:26:00,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:26:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:00,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:26:00,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:00,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:00,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:26:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:00,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067981066] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:26:00,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:26:00,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:26:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525069997] [2022-11-18 20:26:00,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:26:00,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:26:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:00,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:26:00,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:26:00,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-18 20:26:00,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 348 transitions, 766 flow. Second operand has 10 states, 10 states have (on average 331.7) internal successors, (3317), 10 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states 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 20:26:00,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:00,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-18 20:26:00,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:00,762 INFO L130 PetriNetUnfolder]: 16/665 cut-off events. [2022-11-18 20:26:00,762 INFO L131 PetriNetUnfolder]: For 72/89 co-relation queries the response was YES. [2022-11-18 20:26:00,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 665 events. 16/665 cut-off events. For 72/89 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3022 event pairs, 1 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 669. Up to 20 conditions per place. [2022-11-18 20:26:00,772 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 22 selfloop transitions, 9 changer transitions 0/359 dead transitions. [2022-11-18 20:26:00,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 359 transitions, 866 flow [2022-11-18 20:26:00,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:26:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:26:00,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2994 transitions. [2022-11-18 20:26:00,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8275290215588723 [2022-11-18 20:26:00,777 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2994 transitions. [2022-11-18 20:26:00,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2994 transitions. [2022-11-18 20:26:00,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:00,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2994 transitions. [2022-11-18 20:26:00,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 332.6666666666667) internal successors, (2994), 9 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states 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 20:26:00,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states 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 20:26:00,788 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states 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 20:26:00,788 INFO L175 Difference]: Start difference. First operand has 354 places, 348 transitions, 766 flow. Second operand 9 states and 2994 transitions. [2022-11-18 20:26:00,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 359 transitions, 866 flow [2022-11-18 20:26:00,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 359 transitions, 852 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:26:00,795 INFO L231 Difference]: Finished difference. Result has 363 places, 352 transitions, 812 flow [2022-11-18 20:26:00,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=812, PETRI_PLACES=363, PETRI_TRANSITIONS=352} [2022-11-18 20:26:00,796 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 13 predicate places. [2022-11-18 20:26:00,796 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 352 transitions, 812 flow [2022-11-18 20:26:00,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 331.7) internal successors, (3317), 10 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states 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 20:26:00,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:00,797 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:26:00,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-18 20:26:01,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 20:26:01,003 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:26:01,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:01,003 INFO L85 PathProgramCache]: Analyzing trace with hash -842379895, now seen corresponding path program 2 times [2022-11-18 20:26:01,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:01,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466574955] [2022-11-18 20:26:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:01,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:26:01,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:01,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466574955] [2022-11-18 20:26:01,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466574955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:01,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:01,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:26:01,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57481921] [2022-11-18 20:26:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:01,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:26:01,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:01,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:26:01,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:26:01,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-18 20:26:01,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 352 transitions, 812 flow. Second operand has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 20:26:01,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:01,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-18 20:26:01,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:01,262 INFO L130 PetriNetUnfolder]: 14/611 cut-off events. [2022-11-18 20:26:01,263 INFO L131 PetriNetUnfolder]: For 135/344 co-relation queries the response was YES. [2022-11-18 20:26:01,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 611 events. 14/611 cut-off events. For 135/344 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2647 event pairs, 1 based on Foata normal form. 3/540 useless extension candidates. Maximal degree in co-relation 647. Up to 40 conditions per place. [2022-11-18 20:26:01,274 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 21 selfloop transitions, 4 changer transitions 0/359 dead transitions. [2022-11-18 20:26:01,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 359 transitions, 876 flow [2022-11-18 20:26:01,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:26:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:26:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1673 transitions. [2022-11-18 20:26:01,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8323383084577114 [2022-11-18 20:26:01,278 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1673 transitions. [2022-11-18 20:26:01,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1673 transitions. [2022-11-18 20:26:01,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:01,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1673 transitions. [2022-11-18 20:26:01,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 334.6) internal successors, (1673), 5 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states 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 20:26:01,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states 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 20:26:01,285 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states 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 20:26:01,285 INFO L175 Difference]: Start difference. First operand has 363 places, 352 transitions, 812 flow. Second operand 5 states and 1673 transitions. [2022-11-18 20:26:01,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 359 transitions, 876 flow [2022-11-18 20:26:01,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 359 transitions, 860 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-18 20:26:01,293 INFO L231 Difference]: Finished difference. Result has 366 places, 355 transitions, 828 flow [2022-11-18 20:26:01,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=828, PETRI_PLACES=366, PETRI_TRANSITIONS=355} [2022-11-18 20:26:01,294 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 16 predicate places. [2022-11-18 20:26:01,294 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 355 transitions, 828 flow [2022-11-18 20:26:01,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 20:26:01,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:01,295 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:26:01,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:26:01,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:26:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:01,296 INFO L85 PathProgramCache]: Analyzing trace with hash 583764728, now seen corresponding path program 1 times [2022-11-18 20:26:01,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:01,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075284262] [2022-11-18 20:26:01,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:01,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:01,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:01,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075284262] [2022-11-18 20:26:01,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075284262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:26:01,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621145009] [2022-11-18 20:26:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:01,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:01,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:26:01,418 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:26:01,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:26:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:01,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:26:01,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:01,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:26:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:01,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621145009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:26:01,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:26:01,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 20:26:01,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891972994] [2022-11-18 20:26:01,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:26:01,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:26:01,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:26:01,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:26:01,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-18 20:26:01,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 355 transitions, 828 flow. Second operand has 18 states, 18 states have (on average 332.05555555555554) internal successors, (5977), 18 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states 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 20:26:01,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:01,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-18 20:26:01,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:02,128 INFO L130 PetriNetUnfolder]: 14/639 cut-off events. [2022-11-18 20:26:02,129 INFO L131 PetriNetUnfolder]: For 111/128 co-relation queries the response was YES. [2022-11-18 20:26:02,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 639 events. 14/639 cut-off events. For 111/128 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2651 event pairs, 1 based on Foata normal form. 4/576 useless extension candidates. Maximal degree in co-relation 634. Up to 20 conditions per place. [2022-11-18 20:26:02,141 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 38 selfloop transitions, 21 changer transitions 0/390 dead transitions. [2022-11-18 20:26:02,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 390 transitions, 1100 flow [2022-11-18 20:26:02,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:26:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:26:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6972 transitions. [2022-11-18 20:26:02,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8258706467661692 [2022-11-18 20:26:02,154 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6972 transitions. [2022-11-18 20:26:02,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6972 transitions. [2022-11-18 20:26:02,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:02,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6972 transitions. [2022-11-18 20:26:02,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states 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 20:26:02,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 402.0) internal successors, (8844), 22 states have internal predecessors, (8844), 0 states have call successors, (0), 0 states 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 20:26:02,189 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 402.0) internal successors, (8844), 22 states have internal predecessors, (8844), 0 states have call successors, (0), 0 states 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 20:26:02,189 INFO L175 Difference]: Start difference. First operand has 366 places, 355 transitions, 828 flow. Second operand 21 states and 6972 transitions. [2022-11-18 20:26:02,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 390 transitions, 1100 flow [2022-11-18 20:26:02,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 390 transitions, 1098 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:26:02,198 INFO L231 Difference]: Finished difference. Result has 390 places, 368 transitions, 982 flow [2022-11-18 20:26:02,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=982, PETRI_PLACES=390, PETRI_TRANSITIONS=368} [2022-11-18 20:26:02,199 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 40 predicate places. [2022-11-18 20:26:02,200 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 368 transitions, 982 flow [2022-11-18 20:26:02,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 332.05555555555554) internal successors, (5977), 18 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states 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 20:26:02,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:02,201 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:26:02,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:26:02,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:02,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:26:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1147385976, now seen corresponding path program 2 times [2022-11-18 20:26:02,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:02,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239820954] [2022-11-18 20:26:02,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:02,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:02,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:02,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239820954] [2022-11-18 20:26:02,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239820954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:26:02,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66048884] [2022-11-18 20:26:02,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:26:02,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:02,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:26:02,705 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:26:02,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:26:02,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:26:02,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:26:02,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:26:02,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-18 20:26:03,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:26:03,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66048884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:03,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:26:03,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-11-18 20:26:03,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829864211] [2022-11-18 20:26:03,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:03,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:26:03,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:03,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:26:03,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:26:03,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 402 [2022-11-18 20:26:03,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 368 transitions, 982 flow. Second operand has 6 states, 6 states have (on average 323.5) internal successors, (1941), 6 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states 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 20:26:03,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:03,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 402 [2022-11-18 20:26:03,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:04,056 INFO L130 PetriNetUnfolder]: 150/2431 cut-off events. [2022-11-18 20:26:04,056 INFO L131 PetriNetUnfolder]: For 659/930 co-relation queries the response was YES. [2022-11-18 20:26:04,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 2431 events. 150/2431 cut-off events. For 659/930 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 20521 event pairs, 31 based on Foata normal form. 0/2120 useless extension candidates. Maximal degree in co-relation 2930. Up to 108 conditions per place. [2022-11-18 20:26:04,101 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 38 selfloop transitions, 6 changer transitions 0/387 dead transitions. [2022-11-18 20:26:04,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 387 transitions, 1198 flow [2022-11-18 20:26:04,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:26:04,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:26:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2299 transitions. [2022-11-18 20:26:04,105 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8169864960909737 [2022-11-18 20:26:04,105 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2299 transitions. [2022-11-18 20:26:04,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2299 transitions. [2022-11-18 20:26:04,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:04,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2299 transitions. [2022-11-18 20:26:04,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 328.42857142857144) internal successors, (2299), 7 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states 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 20:26:04,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states 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 20:26:04,113 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states 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 20:26:04,113 INFO L175 Difference]: Start difference. First operand has 390 places, 368 transitions, 982 flow. Second operand 7 states and 2299 transitions. [2022-11-18 20:26:04,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 387 transitions, 1198 flow [2022-11-18 20:26:04,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 387 transitions, 1142 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-11-18 20:26:04,124 INFO L231 Difference]: Finished difference. Result has 387 places, 367 transitions, 936 flow [2022-11-18 20:26:04,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=936, PETRI_PLACES=387, PETRI_TRANSITIONS=367} [2022-11-18 20:26:04,125 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 37 predicate places. [2022-11-18 20:26:04,126 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 367 transitions, 936 flow [2022-11-18 20:26:04,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 323.5) internal successors, (1941), 6 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states 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 20:26:04,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:04,127 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 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] [2022-11-18 20:26:04,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:26:04,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 20:26:04,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:26:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1427256126, now seen corresponding path program 1 times [2022-11-18 20:26:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:04,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823733588] [2022-11-18 20:26:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:04,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-18 20:26:04,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:04,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823733588] [2022-11-18 20:26:04,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823733588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:04,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:04,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:26:04,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376653084] [2022-11-18 20:26:04,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:04,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:26:04,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:26:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:26:04,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-18 20:26:04,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 367 transitions, 936 flow. Second operand has 4 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states 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 20:26:04,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:04,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-18 20:26:04,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:04,664 INFO L130 PetriNetUnfolder]: 14/636 cut-off events. [2022-11-18 20:26:04,664 INFO L131 PetriNetUnfolder]: For 175/368 co-relation queries the response was YES. [2022-11-18 20:26:04,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 636 events. 14/636 cut-off events. For 175/368 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2627 event pairs, 1 based on Foata normal form. 11/582 useless extension candidates. Maximal degree in co-relation 664. Up to 20 conditions per place. [2022-11-18 20:26:04,677 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 13 selfloop transitions, 8 changer transitions 0/367 dead transitions. [2022-11-18 20:26:04,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 367 transitions, 976 flow [2022-11-18 20:26:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:26:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:26:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1664 transitions. [2022-11-18 20:26:04,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278606965174129 [2022-11-18 20:26:04,682 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1664 transitions. [2022-11-18 20:26:04,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1664 transitions. [2022-11-18 20:26:04,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:04,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1664 transitions. [2022-11-18 20:26:04,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 332.8) internal successors, (1664), 5 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 20:26:04,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states 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 20:26:04,690 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 402.0) internal successors, (2412), 6 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states 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 20:26:04,690 INFO L175 Difference]: Start difference. First operand has 387 places, 367 transitions, 936 flow. Second operand 5 states and 1664 transitions. [2022-11-18 20:26:04,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 367 transitions, 976 flow [2022-11-18 20:26:04,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 367 transitions, 964 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:26:04,702 INFO L231 Difference]: Finished difference. Result has 385 places, 367 transitions, 944 flow [2022-11-18 20:26:04,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=944, PETRI_PLACES=385, PETRI_TRANSITIONS=367} [2022-11-18 20:26:04,703 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 35 predicate places. [2022-11-18 20:26:04,703 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 367 transitions, 944 flow [2022-11-18 20:26:04,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 332.75) internal successors, (1331), 4 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states 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 20:26:04,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:04,704 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 20:26:04,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 20:26:04,704 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:26:04,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:04,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1209228406, now seen corresponding path program 1 times [2022-11-18 20:26:04,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:04,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781664148] [2022-11-18 20:26:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:04,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:05,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:05,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781664148] [2022-11-18 20:26:05,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781664148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:26:05,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616409038] [2022-11-18 20:26:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:05,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:05,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:26:05,013 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:26:05,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:26:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:05,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 20:26:05,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:05,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:26:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:26:05,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616409038] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:26:05,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:26:05,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 20:26:05,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389942505] [2022-11-18 20:26:05,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:26:05,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:26:05,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:05,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:26:05,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:26:05,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-18 20:26:05,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 367 transitions, 944 flow. Second operand has 23 states, 23 states have (on average 332.30434782608694) internal successors, (7643), 23 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states 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 20:26:05,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:05,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-18 20:26:05,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:06,131 INFO L130 PetriNetUnfolder]: 14/657 cut-off events. [2022-11-18 20:26:06,132 INFO L131 PetriNetUnfolder]: For 225/242 co-relation queries the response was YES. [2022-11-18 20:26:06,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 657 events. 14/657 cut-off events. For 225/242 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2619 event pairs, 1 based on Foata normal form. 3/594 useless extension candidates. Maximal degree in co-relation 676. Up to 20 conditions per place. [2022-11-18 20:26:06,141 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 50 selfloop transitions, 30 changer transitions 0/410 dead transitions. [2022-11-18 20:26:06,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 410 transitions, 1290 flow [2022-11-18 20:26:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:26:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 20:26:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9953 transitions. [2022-11-18 20:26:06,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8252902155887231 [2022-11-18 20:26:06,160 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9953 transitions. [2022-11-18 20:26:06,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9953 transitions. [2022-11-18 20:26:06,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:06,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9953 transitions. [2022-11-18 20:26:06,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 331.76666666666665) internal successors, (9953), 30 states have internal predecessors, (9953), 0 states have call successors, (0), 0 states 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 20:26:06,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 402.0) internal successors, (12462), 31 states have internal predecessors, (12462), 0 states have call successors, (0), 0 states 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 20:26:06,195 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 402.0) internal successors, (12462), 31 states have internal predecessors, (12462), 0 states have call successors, (0), 0 states 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 20:26:06,195 INFO L175 Difference]: Start difference. First operand has 385 places, 367 transitions, 944 flow. Second operand 30 states and 9953 transitions. [2022-11-18 20:26:06,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 410 transitions, 1290 flow [2022-11-18 20:26:06,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 410 transitions, 1278 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:26:06,204 INFO L231 Difference]: Finished difference. Result has 415 places, 377 transitions, 1086 flow [2022-11-18 20:26:06,205 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1086, PETRI_PLACES=415, PETRI_TRANSITIONS=377} [2022-11-18 20:26:06,210 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 65 predicate places. [2022-11-18 20:26:06,210 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 377 transitions, 1086 flow [2022-11-18 20:26:06,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 332.30434782608694) internal successors, (7643), 23 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states 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 20:26:06,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:06,211 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:06,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:26:06,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:06,417 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:26:06,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:06,418 INFO L85 PathProgramCache]: Analyzing trace with hash 677405916, now seen corresponding path program 2 times [2022-11-18 20:26:06,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:06,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600539960] [2022-11-18 20:26:06,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:06,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:26:06,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:06,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600539960] [2022-11-18 20:26:06,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600539960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:06,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:06,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:26:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460620171] [2022-11-18 20:26:06,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:06,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:26:06,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:26:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:26:06,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 402 [2022-11-18 20:26:06,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 377 transitions, 1086 flow. Second operand has 5 states, 5 states have (on average 325.8) internal successors, (1629), 5 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states 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 20:26:06,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:06,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 402 [2022-11-18 20:26:06,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:07,173 INFO L130 PetriNetUnfolder]: 120/1744 cut-off events. [2022-11-18 20:26:07,173 INFO L131 PetriNetUnfolder]: For 627/720 co-relation queries the response was YES. [2022-11-18 20:26:07,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2373 conditions, 1744 events. 120/1744 cut-off events. For 627/720 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13749 event pairs, 41 based on Foata normal form. 0/1528 useless extension candidates. Maximal degree in co-relation 2109. Up to 117 conditions per place. [2022-11-18 20:26:07,200 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 32 selfloop transitions, 5 changer transitions 0/392 dead transitions. [2022-11-18 20:26:07,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 392 transitions, 1262 flow [2022-11-18 20:26:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:26:07,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:26:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1982 transitions. [2022-11-18 20:26:07,204 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8217247097844113 [2022-11-18 20:26:07,204 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1982 transitions. [2022-11-18 20:26:07,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1982 transitions. [2022-11-18 20:26:07,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:07,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1982 transitions. [2022-11-18 20:26:07,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 330.3333333333333) internal successors, (1982), 6 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states 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 20:26:07,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states 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 20:26:07,210 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states 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 20:26:07,211 INFO L175 Difference]: Start difference. First operand has 415 places, 377 transitions, 1086 flow. Second operand 6 states and 1982 transitions. [2022-11-18 20:26:07,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 392 transitions, 1262 flow [2022-11-18 20:26:07,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 392 transitions, 1216 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-18 20:26:07,220 INFO L231 Difference]: Finished difference. Result has 401 places, 376 transitions, 1048 flow [2022-11-18 20:26:07,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1048, PETRI_PLACES=401, PETRI_TRANSITIONS=376} [2022-11-18 20:26:07,221 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 51 predicate places. [2022-11-18 20:26:07,222 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 376 transitions, 1048 flow [2022-11-18 20:26:07,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 325.8) internal successors, (1629), 5 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states 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 20:26:07,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:07,223 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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] [2022-11-18 20:26:07,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 20:26:07,223 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:26:07,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:07,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1988640174, now seen corresponding path program 1 times [2022-11-18 20:26:07,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:07,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074408943] [2022-11-18 20:26:07,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:07,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:26:07,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:07,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074408943] [2022-11-18 20:26:07,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074408943] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:26:07,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624231786] [2022-11-18 20:26:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:07,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:07,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:26:07,330 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:26:07,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:26:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:07,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:26:07,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:26:07,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:26:07,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624231786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:07,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:26:07,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:26:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009338944] [2022-11-18 20:26:07,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:07,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:26:07,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:07,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:26:07,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:26:07,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-18 20:26:07,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 376 transitions, 1048 flow. Second operand has 6 states, 6 states have (on average 331.6666666666667) internal successors, (1990), 6 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 20:26:07,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:07,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-18 20:26:07,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:07,796 INFO L130 PetriNetUnfolder]: 14/654 cut-off events. [2022-11-18 20:26:07,796 INFO L131 PetriNetUnfolder]: For 284/461 co-relation queries the response was YES. [2022-11-18 20:26:07,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 654 events. 14/654 cut-off events. For 284/461 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2610 event pairs, 1 based on Foata normal form. 8/597 useless extension candidates. Maximal degree in co-relation 722. Up to 26 conditions per place. [2022-11-18 20:26:07,808 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 17 selfloop transitions, 6 changer transitions 0/378 dead transitions. [2022-11-18 20:26:07,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 378 transitions, 1096 flow [2022-11-18 20:26:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:26:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:26:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2327 transitions. [2022-11-18 20:26:07,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8269367448471926 [2022-11-18 20:26:07,811 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2327 transitions. [2022-11-18 20:26:07,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2327 transitions. [2022-11-18 20:26:07,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:07,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2327 transitions. [2022-11-18 20:26:07,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 332.42857142857144) internal successors, (2327), 7 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states 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 20:26:07,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states 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 20:26:07,819 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states 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 20:26:07,819 INFO L175 Difference]: Start difference. First operand has 401 places, 376 transitions, 1048 flow. Second operand 7 states and 2327 transitions. [2022-11-18 20:26:07,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 378 transitions, 1096 flow [2022-11-18 20:26:07,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 378 transitions, 1086 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:26:07,829 INFO L231 Difference]: Finished difference. Result has 401 places, 375 transitions, 1046 flow [2022-11-18 20:26:07,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1046, PETRI_PLACES=401, PETRI_TRANSITIONS=375} [2022-11-18 20:26:07,830 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 51 predicate places. [2022-11-18 20:26:07,830 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 375 transitions, 1046 flow [2022-11-18 20:26:07,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 331.6666666666667) internal successors, (1990), 6 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 20:26:07,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:07,831 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:07,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:26:08,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:08,038 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:26:08,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:08,039 INFO L85 PathProgramCache]: Analyzing trace with hash -419331036, now seen corresponding path program 1 times [2022-11-18 20:26:08,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:08,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142781047] [2022-11-18 20:26:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:08,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:26:08,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:08,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142781047] [2022-11-18 20:26:08,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142781047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:26:08,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628775166] [2022-11-18 20:26:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:08,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:08,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:26:08,134 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:26:08,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:26:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:08,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:26:08,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:26:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:26:08,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:26:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:26:08,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628775166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:26:08,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:26:08,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 20:26:08,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239120609] [2022-11-18 20:26:08,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:26:08,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:26:08,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:08,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:26:08,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:26:08,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 402 [2022-11-18 20:26:08,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 375 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 331.9) internal successors, (3319), 10 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states 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 20:26:08,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:08,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 402 [2022-11-18 20:26:08,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:08,627 INFO L130 PetriNetUnfolder]: 10/550 cut-off events. [2022-11-18 20:26:08,627 INFO L131 PetriNetUnfolder]: For 255/272 co-relation queries the response was YES. [2022-11-18 20:26:08,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 550 events. 10/550 cut-off events. For 255/272 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1598 event pairs, 5 based on Foata normal form. 3/500 useless extension candidates. Maximal degree in co-relation 562. Up to 17 conditions per place. [2022-11-18 20:26:08,637 INFO L137 encePairwiseOnDemand]: 396/402 looper letters, 22 selfloop transitions, 9 changer transitions 0/386 dead transitions. [2022-11-18 20:26:08,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 386 transitions, 1146 flow [2022-11-18 20:26:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:26:08,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:26:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2994 transitions. [2022-11-18 20:26:08,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8275290215588723 [2022-11-18 20:26:08,642 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2994 transitions. [2022-11-18 20:26:08,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2994 transitions. [2022-11-18 20:26:08,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:08,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2994 transitions. [2022-11-18 20:26:08,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 332.6666666666667) internal successors, (2994), 9 states have internal predecessors, (2994), 0 states have call successors, (0), 0 states 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 20:26:08,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states 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 20:26:08,651 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 402.0) internal successors, (4020), 10 states have internal predecessors, (4020), 0 states have call successors, (0), 0 states 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 20:26:08,652 INFO L175 Difference]: Start difference. First operand has 401 places, 375 transitions, 1046 flow. Second operand 9 states and 2994 transitions. [2022-11-18 20:26:08,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 386 transitions, 1146 flow [2022-11-18 20:26:08,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 386 transitions, 1133 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-18 20:26:08,662 INFO L231 Difference]: Finished difference. Result has 408 places, 379 transitions, 1093 flow [2022-11-18 20:26:08,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1093, PETRI_PLACES=408, PETRI_TRANSITIONS=379} [2022-11-18 20:26:08,663 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 58 predicate places. [2022-11-18 20:26:08,664 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 379 transitions, 1093 flow [2022-11-18 20:26:08,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 331.9) internal successors, (3319), 10 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states 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 20:26:08,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:08,665 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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] [2022-11-18 20:26:08,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:26:08,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b467bdf-435b-4ef1-8dba-7733466b35e4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:26:08,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:26:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:08,871 INFO L85 PathProgramCache]: Analyzing trace with hash -875675563, now seen corresponding path program 1 times [2022-11-18 20:26:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:08,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936959436] [2022-11-18 20:26:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:08,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:09,076 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-18 20:26:09,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:09,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936959436] [2022-11-18 20:26:09,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936959436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:09,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:09,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:26:09,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541712078] [2022-11-18 20:26:09,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:09,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:26:09,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:09,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:26:09,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:26:09,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 402 [2022-11-18 20:26:09,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 379 transitions, 1093 flow. Second operand has 6 states, 6 states have (on average 323.6666666666667) internal successors, (1942), 6 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states 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 20:26:09,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:09,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 402 [2022-11-18 20:26:09,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:26:09,575 INFO L130 PetriNetUnfolder]: 106/1178 cut-off events. [2022-11-18 20:26:09,575 INFO L131 PetriNetUnfolder]: For 635/657 co-relation queries the response was YES. [2022-11-18 20:26:09,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 1178 events. 106/1178 cut-off events. For 635/657 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7362 event pairs, 38 based on Foata normal form. 0/1017 useless extension candidates. Maximal degree in co-relation 1521. Up to 86 conditions per place. [2022-11-18 20:26:09,594 INFO L137 encePairwiseOnDemand]: 395/402 looper letters, 33 selfloop transitions, 6 changer transitions 0/393 dead transitions. [2022-11-18 20:26:09,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 393 transitions, 1264 flow [2022-11-18 20:26:09,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:26:09,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:26:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2294 transitions. [2022-11-18 20:26:09,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8152096659559346 [2022-11-18 20:26:09,598 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2294 transitions. [2022-11-18 20:26:09,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2294 transitions. [2022-11-18 20:26:09,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:26:09,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2294 transitions. [2022-11-18 20:26:09,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 327.7142857142857) internal successors, (2294), 7 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states 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 20:26:09,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states 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 20:26:09,607 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 402.0) internal successors, (3216), 8 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states 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 20:26:09,607 INFO L175 Difference]: Start difference. First operand has 408 places, 379 transitions, 1093 flow. Second operand 7 states and 2294 transitions. [2022-11-18 20:26:09,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 393 transitions, 1264 flow [2022-11-18 20:26:09,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 393 transitions, 1250 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-18 20:26:09,617 INFO L231 Difference]: Finished difference. Result has 409 places, 378 transitions, 1089 flow [2022-11-18 20:26:09,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1089, PETRI_PLACES=409, PETRI_TRANSITIONS=378} [2022-11-18 20:26:09,619 INFO L288 CegarLoopForPetriNet]: 350 programPoint places, 59 predicate places. [2022-11-18 20:26:09,619 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 378 transitions, 1089 flow [2022-11-18 20:26:09,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 323.6666666666667) internal successors, (1942), 6 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states 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 20:26:09,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:26:09,620 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:26:09,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 20:26:09,621 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-18 20:26:09,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:26:09,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1846291580, now seen corresponding path program 1 times [2022-11-18 20:26:09,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:26:09,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645698356] [2022-11-18 20:26:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:26:09,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:26:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:26:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-11-18 20:26:10,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:26:10,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645698356] [2022-11-18 20:26:10,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645698356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:26:10,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:26:10,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:26:10,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565115345] [2022-11-18 20:26:10,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:26:10,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:26:10,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:26:10,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:26:10,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:26:10,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 402 [2022-11-18 20:26:10,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 378 transitions, 1089 flow. Second operand has 14 states, 14 states have (on average 278.14285714285717) internal successors, (3894), 14 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states 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 20:26:10,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:26:10,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 402 [2022-11-18 20:26:10,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand