./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R --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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- 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-38b53e6 [2022-11-25 15:46:37,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:46:37,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:46:37,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:46:37,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:46:37,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:46:37,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:46:37,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:46:37,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:46:37,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:46:37,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:46:37,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:46:37,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:46:37,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:46:37,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:46:37,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:46:37,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:46:37,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:46:37,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:46:37,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:46:37,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:46:37,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:46:37,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:46:37,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:46:38,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:46:38,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:46:38,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:46:38,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:46:38,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:46:38,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:46:38,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:46:38,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:46:38,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:46:38,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:46:38,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:46:38,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:46:38,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:46:38,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:46:38,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:46:38,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:46:38,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:46:38,016 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 15:46:38,045 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:46:38,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:46:38,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:46:38,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:46:38,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:46:38,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:46:38,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:46:38,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:46:38,049 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:46:38,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:46:38,050 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:46:38,050 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:46:38,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:46:38,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:46:38,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:46:38,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:46:38,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:46:38,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:46:38,053 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 15:46:38,054 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:46:38,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:46:38,054 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:46:38,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:46:38,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:46:38,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:46:38,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:46:38,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:46:38,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:46:38,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:46:38,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:46:38,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:46:38,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:46:38,057 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:46:38,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:46:38,058 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:46:38,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:46:38,058 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-11-25 15:46:38,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:46:38,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:46:38,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:46:38,350 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:46:38,351 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:46:38,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-25 15:46:41,545 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:46:41,755 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:46:41,756 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-25 15:46:41,763 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/data/eea4a7d9d/fe1ba8129dfd4890bb8165c2e5f261cb/FLAG5ec4312a1 [2022-11-25 15:46:41,783 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/data/eea4a7d9d/fe1ba8129dfd4890bb8165c2e5f261cb [2022-11-25 15:46:41,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:46:41,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:46:41,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:46:41,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:46:41,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:46:41,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:46:41" (1/1) ... [2022-11-25 15:46:41,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22511968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:41, skipping insertion in model container [2022-11-25 15:46:41,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:46:41" (1/1) ... [2022-11-25 15:46:41,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:46:41,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:46:42,016 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-25 15:46:42,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:46:42,040 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:46:42,067 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-25 15:46:42,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:46:42,086 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:46:42,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42 WrapperNode [2022-11-25 15:46:42,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:46:42,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:46:42,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:46:42,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:46:42,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (1/1) ... [2022-11-25 15:46:42,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (1/1) ... [2022-11-25 15:46:42,131 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 178 [2022-11-25 15:46:42,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:46:42,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:46:42,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:46:42,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:46:42,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (1/1) ... [2022-11-25 15:46:42,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (1/1) ... [2022-11-25 15:46:42,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (1/1) ... [2022-11-25 15:46:42,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (1/1) ... [2022-11-25 15:46:42,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (1/1) ... [2022-11-25 15:46:42,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (1/1) ... [2022-11-25 15:46:42,169 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (1/1) ... [2022-11-25 15:46:42,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (1/1) ... [2022-11-25 15:46:42,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:46:42,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:46:42,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:46:42,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:46:42,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (1/1) ... [2022-11-25 15:46:42,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:46:42,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:46:42,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:46:42,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:46:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:46:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:46:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:46:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:46:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 15:46:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 15:46:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 15:46:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 15:46:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 15:46:42,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 15:46:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:46:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 15:46:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:46:42,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:46:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:46:42,304 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:46:42,524 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:46:42,526 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:46:43,146 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:46:43,158 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:46:43,158 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 15:46:43,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:46:43 BoogieIcfgContainer [2022-11-25 15:46:43,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:46:43,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:46:43,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:46:43,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:46:43,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:46:41" (1/3) ... [2022-11-25 15:46:43,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393a7c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:46:43, skipping insertion in model container [2022-11-25 15:46:43,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:42" (2/3) ... [2022-11-25 15:46:43,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393a7c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:46:43, skipping insertion in model container [2022-11-25 15:46:43,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:46:43" (3/3) ... [2022-11-25 15:46:43,170 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-11-25 15:46:43,181 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:46:43,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:46:43,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-25 15:46:43,193 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:46:43,337 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 15:46:43,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 337 transitions, 698 flow [2022-11-25 15:46:43,504 INFO L130 PetriNetUnfolder]: 28/334 cut-off events. [2022-11-25 15:46:43,505 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 15:46:43,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 334 events. 28/334 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 539 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-11-25 15:46:43,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 337 transitions, 698 flow [2022-11-25 15:46:43,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 313 transitions, 641 flow [2022-11-25 15:46:43,530 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:46:43,546 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 313 transitions, 641 flow [2022-11-25 15:46:43,549 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 313 transitions, 641 flow [2022-11-25 15:46:43,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 313 transitions, 641 flow [2022-11-25 15:46:43,625 INFO L130 PetriNetUnfolder]: 27/313 cut-off events. [2022-11-25 15:46:43,625 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 15:46:43,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 313 events. 27/313 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 532 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-11-25 15:46:43,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 11400 [2022-11-25 15:46:57,260 INFO L134 LiptonReduction]: Checked pairs total: 16159 [2022-11-25 15:46:57,260 INFO L136 LiptonReduction]: Total number of compositions: 341 [2022-11-25 15:46:57,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:46:57,287 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;@4fb7da99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:46:57,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-11-25 15:46:57,290 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 15:46:57,290 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:46:57,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:46:57,291 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:46:57,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-25 15:46:57,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:57,297 INFO L85 PathProgramCache]: Analyzing trace with hash 40913, now seen corresponding path program 1 times [2022-11-25 15:46:57,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:57,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28635535] [2022-11-25 15:46:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:57,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:57,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:57,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28635535] [2022-11-25 15:46:57,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28635535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:57,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:57,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:46:57,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907215170] [2022-11-25 15:46:57,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:57,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:46:57,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:57,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:46:57,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:57,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 678 [2022-11-25 15:46:57,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:57,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:46:57,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 678 [2022-11-25 15:46:57,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:46:59,752 INFO L130 PetriNetUnfolder]: 11167/15093 cut-off events. [2022-11-25 15:46:59,753 INFO L131 PetriNetUnfolder]: For 564/564 co-relation queries the response was YES. [2022-11-25 15:46:59,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30827 conditions, 15093 events. 11167/15093 cut-off events. For 564/564 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 76084 event pairs, 8074 based on Foata normal form. 0/7218 useless extension candidates. Maximal degree in co-relation 14220. Up to 7543 conditions per place. [2022-11-25 15:46:59,861 INFO L137 encePairwiseOnDemand]: 666/678 looper letters, 99 selfloop transitions, 6 changer transitions 0/106 dead transitions. [2022-11-25 15:46:59,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 452 flow [2022-11-25 15:46:59,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:46:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:46:59,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1035 transitions. [2022-11-25 15:46:59,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5088495575221239 [2022-11-25 15:46:59,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1035 transitions. [2022-11-25 15:46:59,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1035 transitions. [2022-11-25 15:46:59,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:46:59,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1035 transitions. [2022-11-25 15:46:59,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:59,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:59,936 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:59,938 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1035 transitions. [2022-11-25 15:46:59,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 452 flow [2022-11-25 15:46:59,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 106 transitions, 434 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 15:46:59,955 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 176 flow [2022-11-25 15:46:59,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2022-11-25 15:46:59,963 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2022-11-25 15:46:59,963 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 176 flow [2022-11-25 15:46:59,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:59,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:46:59,965 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 15:46:59,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:46:59,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-25 15:46:59,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:59,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1271520, now seen corresponding path program 1 times [2022-11-25 15:46:59,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:59,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369805728] [2022-11-25 15:46:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:00,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:00,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369805728] [2022-11-25 15:47:00,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369805728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:00,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:00,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:47:00,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270571071] [2022-11-25 15:47:00,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:00,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:47:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:47:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:00,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 678 [2022-11-25 15:47:00,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:00,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:00,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 678 [2022-11-25 15:47:00,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:01,898 INFO L130 PetriNetUnfolder]: 11167/15090 cut-off events. [2022-11-25 15:47:01,898 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2022-11-25 15:47:01,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30650 conditions, 15090 events. 11167/15090 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 76075 event pairs, 8074 based on Foata normal form. 0/7217 useless extension candidates. Maximal degree in co-relation 15305. Up to 15074 conditions per place. [2022-11-25 15:47:01,999 INFO L137 encePairwiseOnDemand]: 674/678 looper letters, 57 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-11-25 15:47:02,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 280 flow [2022-11-25 15:47:02,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:47:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:47:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2022-11-25 15:47:02,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48180924287118976 [2022-11-25 15:47:02,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2022-11-25 15:47:02,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2022-11-25 15:47:02,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:02,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2022-11-25 15:47:02,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,016 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 176 flow. Second operand 3 states and 980 transitions. [2022-11-25 15:47:02,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 280 flow [2022-11-25 15:47:02,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:47:02,020 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 154 flow [2022-11-25 15:47:02,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2022-11-25 15:47:02,021 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2022-11-25 15:47:02,021 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 154 flow [2022-11-25 15:47:02,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:02,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 15:47:02,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:47:02,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-25 15:47:02,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:02,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1271550, now seen corresponding path program 1 times [2022-11-25 15:47:02,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:02,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956388857] [2022-11-25 15:47:02,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:02,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956388857] [2022-11-25 15:47:02,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956388857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:47:02,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837272633] [2022-11-25 15:47:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:02,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:02,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:47:02,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:47:02,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:47:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:02,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:47:02,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:47:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:02,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:47:02,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:02,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837272633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:47:02,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:47:02,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 15:47:02,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913994781] [2022-11-25 15:47:02,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:47:02,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:47:02,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:47:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:47:02,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 678 [2022-11-25 15:47:02,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:02,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 678 [2022-11-25 15:47:02,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:06,866 INFO L130 PetriNetUnfolder]: 27916/37719 cut-off events. [2022-11-25 15:47:06,867 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2022-11-25 15:47:06,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76587 conditions, 37719 events. 27916/37719 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 208538 event pairs, 20185 based on Foata normal form. 0/18059 useless extension candidates. Maximal degree in co-relation 76579. Up to 7541 conditions per place. [2022-11-25 15:47:07,068 INFO L137 encePairwiseOnDemand]: 669/678 looper letters, 228 selfloop transitions, 21 changer transitions 0/250 dead transitions. [2022-11-25 15:47:07,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 250 transitions, 1088 flow [2022-11-25 15:47:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:47:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:47:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2106 transitions. [2022-11-25 15:47:07,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5176991150442478 [2022-11-25 15:47:07,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2106 transitions. [2022-11-25 15:47:07,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2106 transitions. [2022-11-25 15:47:07,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:07,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2106 transitions. [2022-11-25 15:47:07,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 351.0) internal successors, (2106), 6 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:07,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:07,091 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:07,092 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 154 flow. Second operand 6 states and 2106 transitions. [2022-11-25 15:47:07,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 250 transitions, 1088 flow [2022-11-25 15:47:07,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 250 transitions, 1087 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:47:07,100 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 303 flow [2022-11-25 15:47:07,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2022-11-25 15:47:07,102 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2022-11-25 15:47:07,102 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 303 flow [2022-11-25 15:47:07,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:07,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:07,104 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 15:47:07,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 15:47:07,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:07,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-25 15:47:07,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:07,310 INFO L85 PathProgramCache]: Analyzing trace with hash -771658833, now seen corresponding path program 2 times [2022-11-25 15:47:07,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:07,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22452390] [2022-11-25 15:47:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:07,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:07,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:07,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22452390] [2022-11-25 15:47:07,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22452390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:47:07,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52694276] [2022-11-25 15:47:07,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:47:07,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:07,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:47:07,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:47:07,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:47:07,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:47:07,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:47:07,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:47:07,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:47:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:47:07,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:47:07,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52694276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:07,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:47:07,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 15:47:07,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185748096] [2022-11-25 15:47:07,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:07,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:47:07,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:07,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:47:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:47:07,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 678 [2022-11-25 15:47:07,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:07,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:07,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 678 [2022-11-25 15:47:07,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:10,750 INFO L130 PetriNetUnfolder]: 27916/37718 cut-off events. [2022-11-25 15:47:10,750 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-11-25 15:47:10,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76632 conditions, 37718 events. 27916/37718 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1719. Compared 212121 event pairs, 20185 based on Foata normal form. 1/18040 useless extension candidates. Maximal degree in co-relation 76620. Up to 37673 conditions per place. [2022-11-25 15:47:10,952 INFO L137 encePairwiseOnDemand]: 675/678 looper letters, 66 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2022-11-25 15:47:10,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 437 flow [2022-11-25 15:47:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:47:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:47:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 986 transitions. [2022-11-25 15:47:10,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48475909537856443 [2022-11-25 15:47:10,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 986 transitions. [2022-11-25 15:47:10,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 986 transitions. [2022-11-25 15:47:10,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:10,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 986 transitions. [2022-11-25 15:47:10,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:10,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:10,964 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:10,965 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 303 flow. Second operand 3 states and 986 transitions. [2022-11-25 15:47:10,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 437 flow [2022-11-25 15:47:10,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 407 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-25 15:47:10,968 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 275 flow [2022-11-25 15:47:10,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2022-11-25 15:47:10,972 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2022-11-25 15:47:10,972 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 275 flow [2022-11-25 15:47:10,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:10,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:10,973 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-11-25 15:47:10,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:47:11,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:11,179 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-25 15:47:11,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:11,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2023974431, now seen corresponding path program 1 times [2022-11-25 15:47:11,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:11,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589326700] [2022-11-25 15:47:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:11,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:11,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:11,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589326700] [2022-11-25 15:47:11,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589326700] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:47:11,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691832998] [2022-11-25 15:47:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:11,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:11,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:47:11,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:47:11,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:47:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:11,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:47:11,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:47:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:11,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:47:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:11,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691832998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:47:11,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:47:11,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 15:47:11,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783875648] [2022-11-25 15:47:11,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:47:11,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 15:47:11,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:11,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:47:11,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:47:11,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 678 [2022-11-25 15:47:11,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 309.15384615384613) internal successors, (4019), 13 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:11,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:11,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 678 [2022-11-25 15:47:11,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:19,188 INFO L130 PetriNetUnfolder]: 61414/82976 cut-off events. [2022-11-25 15:47:19,188 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2022-11-25 15:47:19,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168529 conditions, 82976 events. 61414/82976 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 2060. Compared 483802 event pairs, 44407 based on Foata normal form. 12/39766 useless extension candidates. Maximal degree in co-relation 168516. Up to 8470 conditions per place. [2022-11-25 15:47:19,606 INFO L137 encePairwiseOnDemand]: 670/678 looper letters, 491 selfloop transitions, 51 changer transitions 0/543 dead transitions. [2022-11-25 15:47:19,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 543 transitions, 2479 flow [2022-11-25 15:47:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:47:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 15:47:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4250 transitions. [2022-11-25 15:47:19,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.522369714847591 [2022-11-25 15:47:19,617 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4250 transitions. [2022-11-25 15:47:19,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4250 transitions. [2022-11-25 15:47:19,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:19,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4250 transitions. [2022-11-25 15:47:19,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 354.1666666666667) internal successors, (4250), 12 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:19,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 678.0) internal successors, (8814), 13 states have internal predecessors, (8814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:19,645 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 678.0) internal successors, (8814), 13 states have internal predecessors, (8814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:19,646 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 275 flow. Second operand 12 states and 4250 transitions. [2022-11-25 15:47:19,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 543 transitions, 2479 flow [2022-11-25 15:47:19,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 543 transitions, 2455 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:47:19,660 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 611 flow [2022-11-25 15:47:19,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=611, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2022-11-25 15:47:19,663 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2022-11-25 15:47:19,664 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 611 flow [2022-11-25 15:47:19,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 309.15384615384613) internal successors, (4019), 13 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:19,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:19,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:19,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:47:19,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3684bce-09a9-4582-a065-93e9b9067aae/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:47:19,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-25 15:47:19,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:19,876 INFO L85 PathProgramCache]: Analyzing trace with hash -569355006, now seen corresponding path program 1 times [2022-11-25 15:47:19,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:19,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367379535] [2022-11-25 15:47:19,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:19,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:19,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:19,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367379535] [2022-11-25 15:47:19,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367379535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:19,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:19,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:47:19,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557434640] [2022-11-25 15:47:19,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:19,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:47:19,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:47:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:19,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 678 [2022-11-25 15:47:19,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 611 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:19,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:19,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 678 [2022-11-25 15:47:19,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:32,103 INFO L130 PetriNetUnfolder]: 104831/144719 cut-off events. [2022-11-25 15:47:32,103 INFO L131 PetriNetUnfolder]: For 578/578 co-relation queries the response was YES. [2022-11-25 15:47:32,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291104 conditions, 144719 events. 104831/144719 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 4225. Compared 997695 event pairs, 44407 based on Foata normal form. 0/72225 useless extension candidates. Maximal degree in co-relation 291085. Up to 82889 conditions per place. [2022-11-25 15:47:33,187 INFO L137 encePairwiseOnDemand]: 674/678 looper letters, 138 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2022-11-25 15:47:33,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 141 transitions, 972 flow [2022-11-25 15:47:33,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:47:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:47:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1037 transitions. [2022-11-25 15:47:33,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5098328416912488 [2022-11-25 15:47:33,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1037 transitions. [2022-11-25 15:47:33,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1037 transitions. [2022-11-25 15:47:33,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:33,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1037 transitions. [2022-11-25 15:47:33,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:33,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:33,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:33,200 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 611 flow. Second operand 3 states and 1037 transitions. [2022-11-25 15:47:33,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 141 transitions, 972 flow [2022-11-25 15:47:33,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 141 transitions, 828 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-11-25 15:47:33,206 INFO L231 Difference]: Finished difference. Result has 72 places, 104 transitions, 481 flow [2022-11-25 15:47:33,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=72, PETRI_TRANSITIONS=104} [2022-11-25 15:47:33,207 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2022-11-25 15:47:33,207 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 104 transitions, 481 flow [2022-11-25 15:47:33,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:33,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:33,208 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:33,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:47:33,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-25 15:47:33,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:33,209 INFO L85 PathProgramCache]: Analyzing trace with hash -569354854, now seen corresponding path program 1 times [2022-11-25 15:47:33,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:33,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549630875] [2022-11-25 15:47:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:33,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:33,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:33,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549630875] [2022-11-25 15:47:33,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549630875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:33,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:33,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:47:33,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010210865] [2022-11-25 15:47:33,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:33,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:47:33,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:33,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:47:33,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:47:33,477 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 678 [2022-11-25 15:47:33,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 104 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:33,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:33,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 678 [2022-11-25 15:47:33,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand