./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/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_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/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_915770d8-ecfe-4023-b428-2db6a85438e1/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 a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b --- 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 19:36:25,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:36:25,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:36:25,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:36:25,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:36:25,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:36:25,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:36:25,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:36:25,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:36:25,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:36:25,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:36:25,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:36:25,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:36:25,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:36:25,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:36:25,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:36:25,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:36:25,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:36:25,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:36:25,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:36:25,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:36:25,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:36:25,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:36:25,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:36:25,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:36:25,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:36:25,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:36:25,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:36:25,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:36:25,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:36:25,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:36:25,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:36:25,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:36:25,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:36:25,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:36:25,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:36:25,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:36:25,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:36:25,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:36:25,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:36:25,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:36:25,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:36:25,236 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:36:25,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:36:25,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:36:25,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:36:25,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:36:25,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:36:25,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:36:25,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:36:25,240 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:36:25,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:36:25,242 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:36:25,242 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:36:25,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:36:25,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:36:25,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:36:25,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:36:25,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:36:25,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:36:25,244 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:36:25,244 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:36:25,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:36:25,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:36:25,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:36:25,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:36:25,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:36:25,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:36:25,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:36:25,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:36:25,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:36:25,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:36:25,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:36:25,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:36:25,250 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:36:25,250 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:36:25,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:36:25,251 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_915770d8-ecfe-4023-b428-2db6a85438e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4208e364fc80ce33bd799516b7b127a7314c394860a88240a88c2fb8dc1fa8b [2022-11-18 19:36:25,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:36:25,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:36:25,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:36:25,557 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:36:25,558 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:36:25,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2022-11-18 19:36:25,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/data/9748cf70c/2610a88f74134550911d995bca8f1795/FLAGfec5bf4dc [2022-11-18 19:36:26,195 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:36:26,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2022-11-18 19:36:26,202 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/data/9748cf70c/2610a88f74134550911d995bca8f1795/FLAGfec5bf4dc [2022-11-18 19:36:26,520 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/data/9748cf70c/2610a88f74134550911d995bca8f1795 [2022-11-18 19:36:26,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:36:26,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:36:26,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:36:26,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:36:26,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:36:26,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@298dcc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26, skipping insertion in model container [2022-11-18 19:36:26,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:36:26,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:36:26,789 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_915770d8-ecfe-4023-b428-2db6a85438e1/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c[3072,3085] [2022-11-18 19:36:26,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:36:26,802 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:36:26,828 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_915770d8-ecfe-4023-b428-2db6a85438e1/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c[3072,3085] [2022-11-18 19:36:26,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:36:26,846 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:36:26,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26 WrapperNode [2022-11-18 19:36:26,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:36:26,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:36:26,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:36:26,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:36:26,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,903 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 218 [2022-11-18 19:36:26,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:36:26,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:36:26,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:36:26,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:36:26,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,959 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:36:26,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:36:26,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:36:26,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:36:26,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (1/1) ... [2022-11-18 19:36:26,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:36:27,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:36:27,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:36:27,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:36:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:36:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:36:27,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:36:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:36:27,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:36:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:36:27,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:36:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:36:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:36:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:36:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:36:27,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:36:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:36:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:36:27,076 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 19:36:27,236 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:36:27,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:36:27,769 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:36:27,781 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:36:27,781 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:36:27,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:36:27 BoogieIcfgContainer [2022-11-18 19:36:27,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:36:27,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:36:27,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:36:27,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:36:27,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:36:26" (1/3) ... [2022-11-18 19:36:27,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddccf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:36:27, skipping insertion in model container [2022-11-18 19:36:27,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:36:26" (2/3) ... [2022-11-18 19:36:27,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddccf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:36:27, skipping insertion in model container [2022-11-18 19:36:27,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:36:27" (3/3) ... [2022-11-18 19:36:27,799 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2022-11-18 19:36:27,807 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:36:27,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:36:27,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-18 19:36:27,820 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:36:28,030 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:36:28,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 297 transitions, 618 flow [2022-11-18 19:36:28,245 INFO L130 PetriNetUnfolder]: 23/294 cut-off events. [2022-11-18 19:36:28,245 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:36:28,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 294 events. 23/294 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 807 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 220. Up to 2 conditions per place. [2022-11-18 19:36:28,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 297 transitions, 618 flow [2022-11-18 19:36:28,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 265 transitions, 545 flow [2022-11-18 19:36:28,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:36:28,301 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;@345a819, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:36:28,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-18 19:36:28,321 INFO L130 PetriNetUnfolder]: 4/101 cut-off events. [2022-11-18 19:36:28,322 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:36:28,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:28,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:28,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:28,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:28,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1569440479, now seen corresponding path program 1 times [2022-11-18 19:36:28,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:28,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958592323] [2022-11-18 19:36:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:28,957 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 19:36:28,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:28,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958592323] [2022-11-18 19:36:28,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958592323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:28,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:28,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:28,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600898926] [2022-11-18 19:36:28,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:28,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:28,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:29,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:29,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:29,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-18 19:36:29,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 265 transitions, 545 flow. Second operand has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:29,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:29,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-18 19:36:29,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:29,580 INFO L130 PetriNetUnfolder]: 155/966 cut-off events. [2022-11-18 19:36:29,581 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2022-11-18 19:36:29,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 966 events. 155/966 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6029 event pairs, 16 based on Foata normal form. 178/970 useless extension candidates. Maximal degree in co-relation 1057. Up to 191 conditions per place. [2022-11-18 19:36:29,606 INFO L137 encePairwiseOnDemand]: 285/297 looper letters, 41 selfloop transitions, 5 changer transitions 0/270 dead transitions. [2022-11-18 19:36:29,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 270 transitions, 665 flow [2022-11-18 19:36:29,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:36:29,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1573 transitions. [2022-11-18 19:36:29,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2022-11-18 19:36:29,633 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1573 transitions. [2022-11-18 19:36:29,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1573 transitions. [2022-11-18 19:36:29,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:29,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1573 transitions. [2022-11-18 19:36:29,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.1666666666667) internal successors, (1573), 6 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:29,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:29,661 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:29,663 INFO L175 Difference]: Start difference. First operand has 254 places, 265 transitions, 545 flow. Second operand 6 states and 1573 transitions. [2022-11-18 19:36:29,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 270 transitions, 665 flow [2022-11-18 19:36:29,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 270 transitions, 646 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:36:29,680 INFO L231 Difference]: Finished difference. Result has 253 places, 258 transitions, 532 flow [2022-11-18 19:36:29,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=532, PETRI_PLACES=253, PETRI_TRANSITIONS=258} [2022-11-18 19:36:29,686 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, -1 predicate places. [2022-11-18 19:36:29,687 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 258 transitions, 532 flow [2022-11-18 19:36:29,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:29,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:29,689 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:29,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:36:29,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:29,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1408013846, now seen corresponding path program 1 times [2022-11-18 19:36:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:29,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710016859] [2022-11-18 19:36:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:29,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:29,841 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 19:36:29,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:29,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710016859] [2022-11-18 19:36:29,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710016859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:29,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:29,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:36:29,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69734382] [2022-11-18 19:36:29,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:29,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:29,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:29,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:29,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-18 19:36:29,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 258 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 260.75) internal successors, (1043), 4 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:29,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:29,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-18 19:36:29,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:30,129 INFO L130 PetriNetUnfolder]: 94/824 cut-off events. [2022-11-18 19:36:30,129 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-18 19:36:30,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1077 conditions, 824 events. 94/824 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5425 event pairs, 24 based on Foata normal form. 0/699 useless extension candidates. Maximal degree in co-relation 690. Up to 71 conditions per place. [2022-11-18 19:36:30,149 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 37 selfloop transitions, 4 changer transitions 0/272 dead transitions. [2022-11-18 19:36:30,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 272 transitions, 650 flow [2022-11-18 19:36:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:36:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1079 transitions. [2022-11-18 19:36:30,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9082491582491582 [2022-11-18 19:36:30,154 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1079 transitions. [2022-11-18 19:36:30,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1079 transitions. [2022-11-18 19:36:30,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:30,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1079 transitions. [2022-11-18 19:36:30,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.75) internal successors, (1079), 4 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:30,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:30,162 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:30,162 INFO L175 Difference]: Start difference. First operand has 253 places, 258 transitions, 532 flow. Second operand 4 states and 1079 transitions. [2022-11-18 19:36:30,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 272 transitions, 650 flow [2022-11-18 19:36:30,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 272 transitions, 641 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:36:30,198 INFO L231 Difference]: Finished difference. Result has 254 places, 259 transitions, 547 flow [2022-11-18 19:36:30,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=547, PETRI_PLACES=254, PETRI_TRANSITIONS=259} [2022-11-18 19:36:30,199 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 0 predicate places. [2022-11-18 19:36:30,199 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 259 transitions, 547 flow [2022-11-18 19:36:30,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.75) internal successors, (1043), 4 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:30,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:30,201 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:30,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:36:30,201 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:30,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:30,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1223199338, now seen corresponding path program 1 times [2022-11-18 19:36:30,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:30,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141355722] [2022-11-18 19:36:30,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:30,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:30,401 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 19:36:30,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:30,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141355722] [2022-11-18 19:36:30,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141355722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:30,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:30,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:30,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719946284] [2022-11-18 19:36:30,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:30,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:30,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:30,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:30,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:30,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-18 19:36:30,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 259 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:30,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:30,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-18 19:36:30,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:31,237 INFO L130 PetriNetUnfolder]: 665/3194 cut-off events. [2022-11-18 19:36:31,237 INFO L131 PetriNetUnfolder]: For 267/701 co-relation queries the response was YES. [2022-11-18 19:36:31,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 3194 events. 665/3194 cut-off events. For 267/701 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 29173 event pairs, 102 based on Foata normal form. 0/2449 useless extension candidates. Maximal degree in co-relation 3087. Up to 685 conditions per place. [2022-11-18 19:36:31,286 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 40 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-18 19:36:31,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 269 transitions, 664 flow [2022-11-18 19:36:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:31,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:36:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1558 transitions. [2022-11-18 19:36:31,291 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8742985409652076 [2022-11-18 19:36:31,293 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1558 transitions. [2022-11-18 19:36:31,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1558 transitions. [2022-11-18 19:36:31,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:31,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1558 transitions. [2022-11-18 19:36:31,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.6666666666667) internal successors, (1558), 6 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:31,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:31,304 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:31,304 INFO L175 Difference]: Start difference. First operand has 254 places, 259 transitions, 547 flow. Second operand 6 states and 1558 transitions. [2022-11-18 19:36:31,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 269 transitions, 664 flow [2022-11-18 19:36:31,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 269 transitions, 664 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:36:31,311 INFO L231 Difference]: Finished difference. Result has 258 places, 258 transitions, 555 flow [2022-11-18 19:36:31,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=555, PETRI_PLACES=258, PETRI_TRANSITIONS=258} [2022-11-18 19:36:31,314 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 4 predicate places. [2022-11-18 19:36:31,314 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 258 transitions, 555 flow [2022-11-18 19:36:31,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.16666666666666) internal successors, (1525), 6 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:31,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:31,316 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:31,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:36:31,316 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:31,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:31,317 INFO L85 PathProgramCache]: Analyzing trace with hash 735527000, now seen corresponding path program 1 times [2022-11-18 19:36:31,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:31,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146711339] [2022-11-18 19:36:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:31,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:31,467 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 19:36:31,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:31,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146711339] [2022-11-18 19:36:31,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146711339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:31,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:31,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:36:31,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240190486] [2022-11-18 19:36:31,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:31,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:31,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:31,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-18 19:36:31,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 258 transitions, 555 flow. Second operand has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:31,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:31,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-18 19:36:31,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:31,863 INFO L130 PetriNetUnfolder]: 143/991 cut-off events. [2022-11-18 19:36:31,863 INFO L131 PetriNetUnfolder]: For 104/394 co-relation queries the response was YES. [2022-11-18 19:36:31,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 991 events. 143/991 cut-off events. For 104/394 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7237 event pairs, 48 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 1100. Up to 126 conditions per place. [2022-11-18 19:36:31,898 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 36 selfloop transitions, 4 changer transitions 0/271 dead transitions. [2022-11-18 19:36:31,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 271 transitions, 668 flow [2022-11-18 19:36:31,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:36:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1078 transitions. [2022-11-18 19:36:31,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2022-11-18 19:36:31,902 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1078 transitions. [2022-11-18 19:36:31,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1078 transitions. [2022-11-18 19:36:31,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:31,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1078 transitions. [2022-11-18 19:36:31,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.5) internal successors, (1078), 4 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:31,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:31,917 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:31,917 INFO L175 Difference]: Start difference. First operand has 258 places, 258 transitions, 555 flow. Second operand 4 states and 1078 transitions. [2022-11-18 19:36:31,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 271 transitions, 668 flow [2022-11-18 19:36:31,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 271 transitions, 659 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:36:31,926 INFO L231 Difference]: Finished difference. Result has 259 places, 259 transitions, 570 flow [2022-11-18 19:36:31,926 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=570, PETRI_PLACES=259, PETRI_TRANSITIONS=259} [2022-11-18 19:36:31,933 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 5 predicate places. [2022-11-18 19:36:31,933 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 259 transitions, 570 flow [2022-11-18 19:36:31,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:31,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:31,934 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:31,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:36:31,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:31,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:31,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1984407855, now seen corresponding path program 1 times [2022-11-18 19:36:31,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:31,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472943892] [2022-11-18 19:36:31,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:31,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:32,059 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 19:36:32,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:32,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472943892] [2022-11-18 19:36:32,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472943892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:32,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:32,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:36:32,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792971533] [2022-11-18 19:36:32,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:32,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:32,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:32,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:32,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:32,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-18 19:36:32,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 259 transitions, 570 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 19:36:32,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:32,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-18 19:36:32,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:32,403 INFO L130 PetriNetUnfolder]: 88/974 cut-off events. [2022-11-18 19:36:32,403 INFO L131 PetriNetUnfolder]: For 55/113 co-relation queries the response was YES. [2022-11-18 19:36:32,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 974 events. 88/974 cut-off events. For 55/113 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6784 event pairs, 24 based on Foata normal form. 5/854 useless extension candidates. Maximal degree in co-relation 1112. Up to 72 conditions per place. [2022-11-18 19:36:32,432 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 37 selfloop transitions, 3 changer transitions 0/271 dead transitions. [2022-11-18 19:36:32,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 271 transitions, 678 flow [2022-11-18 19:36:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:36:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1077 transitions. [2022-11-18 19:36:32,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065656565656566 [2022-11-18 19:36:32,435 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1077 transitions. [2022-11-18 19:36:32,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1077 transitions. [2022-11-18 19:36:32,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:32,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1077 transitions. [2022-11-18 19:36:32,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:32,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:32,445 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:32,445 INFO L175 Difference]: Start difference. First operand has 259 places, 259 transitions, 570 flow. Second operand 4 states and 1077 transitions. [2022-11-18 19:36:32,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 271 transitions, 678 flow [2022-11-18 19:36:32,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 271 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:36:32,452 INFO L231 Difference]: Finished difference. Result has 261 places, 258 transitions, 568 flow [2022-11-18 19:36:32,453 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=568, PETRI_PLACES=261, PETRI_TRANSITIONS=258} [2022-11-18 19:36:32,456 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 7 predicate places. [2022-11-18 19:36:32,456 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 258 transitions, 568 flow [2022-11-18 19:36:32,457 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 19:36:32,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:32,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:32,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:36:32,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:32,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:32,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1387100597, now seen corresponding path program 1 times [2022-11-18 19:36:32,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:32,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813396937] [2022-11-18 19:36:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:32,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:32,602 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 19:36:32,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:32,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813396937] [2022-11-18 19:36:32,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813396937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:32,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:32,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:32,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55127405] [2022-11-18 19:36:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:32,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:32,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:32,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:32,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:32,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-18 19:36:32,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 258 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:32,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:32,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-18 19:36:32,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:33,118 INFO L130 PetriNetUnfolder]: 207/1478 cut-off events. [2022-11-18 19:36:33,118 INFO L131 PetriNetUnfolder]: For 75/324 co-relation queries the response was YES. [2022-11-18 19:36:33,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2011 conditions, 1478 events. 207/1478 cut-off events. For 75/324 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10973 event pairs, 22 based on Foata normal form. 4/1242 useless extension candidates. Maximal degree in co-relation 1827. Up to 282 conditions per place. [2022-11-18 19:36:33,159 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 39 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-18 19:36:33,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 269 transitions, 686 flow [2022-11-18 19:36:33,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:33,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:36:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1557 transitions. [2022-11-18 19:36:33,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8737373737373737 [2022-11-18 19:36:33,164 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1557 transitions. [2022-11-18 19:36:33,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1557 transitions. [2022-11-18 19:36:33,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:33,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1557 transitions. [2022-11-18 19:36:33,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:33,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:33,173 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:33,174 INFO L175 Difference]: Start difference. First operand has 261 places, 258 transitions, 568 flow. Second operand 6 states and 1557 transitions. [2022-11-18 19:36:33,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 269 transitions, 686 flow [2022-11-18 19:36:33,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 269 transitions, 681 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:36:33,180 INFO L231 Difference]: Finished difference. Result has 263 places, 257 transitions, 571 flow [2022-11-18 19:36:33,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=571, PETRI_PLACES=263, PETRI_TRANSITIONS=257} [2022-11-18 19:36:33,181 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 9 predicate places. [2022-11-18 19:36:33,181 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 257 transitions, 571 flow [2022-11-18 19:36:33,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:33,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:33,183 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:33,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:36:33,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:33,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:33,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1337161623, now seen corresponding path program 1 times [2022-11-18 19:36:33,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:33,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087008716] [2022-11-18 19:36:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:33,286 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 19:36:33,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:33,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087008716] [2022-11-18 19:36:33,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087008716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:33,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:33,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:33,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778264569] [2022-11-18 19:36:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:33,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:33,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:33,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:33,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:33,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-18 19:36:33,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 257 transitions, 571 flow. Second operand has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:33,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:33,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-18 19:36:33,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:34,088 INFO L130 PetriNetUnfolder]: 762/3216 cut-off events. [2022-11-18 19:36:34,089 INFO L131 PetriNetUnfolder]: For 436/446 co-relation queries the response was YES. [2022-11-18 19:36:34,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 3216 events. 762/3216 cut-off events. For 436/446 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 29158 event pairs, 78 based on Foata normal form. 0/2473 useless extension candidates. Maximal degree in co-relation 4293. Up to 920 conditions per place. [2022-11-18 19:36:34,133 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 39 selfloop transitions, 5 changer transitions 0/266 dead transitions. [2022-11-18 19:36:34,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 266 transitions, 681 flow [2022-11-18 19:36:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:36:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1557 transitions. [2022-11-18 19:36:34,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8737373737373737 [2022-11-18 19:36:34,139 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1557 transitions. [2022-11-18 19:36:34,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1557 transitions. [2022-11-18 19:36:34,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:34,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1557 transitions. [2022-11-18 19:36:34,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:34,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:34,149 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:34,149 INFO L175 Difference]: Start difference. First operand has 263 places, 257 transitions, 571 flow. Second operand 6 states and 1557 transitions. [2022-11-18 19:36:34,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 266 transitions, 681 flow [2022-11-18 19:36:34,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 266 transitions, 672 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:36:34,156 INFO L231 Difference]: Finished difference. Result has 263 places, 256 transitions, 570 flow [2022-11-18 19:36:34,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=570, PETRI_PLACES=263, PETRI_TRANSITIONS=256} [2022-11-18 19:36:34,158 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 9 predicate places. [2022-11-18 19:36:34,158 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 256 transitions, 570 flow [2022-11-18 19:36:34,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.33333333333334) internal successors, (1526), 6 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:34,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:34,159 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:34,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:36:34,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:34,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:34,160 INFO L85 PathProgramCache]: Analyzing trace with hash -688459218, now seen corresponding path program 1 times [2022-11-18 19:36:34,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:34,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577892305] [2022-11-18 19:36:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:34,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,259 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 19:36:34,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:34,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577892305] [2022-11-18 19:36:34,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577892305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:34,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:34,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:34,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026160926] [2022-11-18 19:36:34,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:34,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:36:34,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:34,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:36:34,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:34,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 297 [2022-11-18 19:36:34,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 256 transitions, 570 flow. Second operand has 5 states, 5 states have (on average 257.6) internal successors, (1288), 5 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:34,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:34,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 297 [2022-11-18 19:36:34,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:34,585 INFO L130 PetriNetUnfolder]: 99/1027 cut-off events. [2022-11-18 19:36:34,585 INFO L131 PetriNetUnfolder]: For 35/107 co-relation queries the response was YES. [2022-11-18 19:36:34,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 1027 events. 99/1027 cut-off events. For 35/107 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7342 event pairs, 30 based on Foata normal form. 4/912 useless extension candidates. Maximal degree in co-relation 1230. Up to 90 conditions per place. [2022-11-18 19:36:34,612 INFO L137 encePairwiseOnDemand]: 290/297 looper letters, 44 selfloop transitions, 7 changer transitions 0/277 dead transitions. [2022-11-18 19:36:34,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 277 transitions, 726 flow [2022-11-18 19:36:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:36:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1582 transitions. [2022-11-18 19:36:34,616 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877665544332211 [2022-11-18 19:36:34,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1582 transitions. [2022-11-18 19:36:34,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1582 transitions. [2022-11-18 19:36:34,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:34,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1582 transitions. [2022-11-18 19:36:34,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.6666666666667) internal successors, (1582), 6 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:34,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:34,626 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:34,626 INFO L175 Difference]: Start difference. First operand has 263 places, 256 transitions, 570 flow. Second operand 6 states and 1582 transitions. [2022-11-18 19:36:34,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 277 transitions, 726 flow [2022-11-18 19:36:34,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 277 transitions, 712 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 19:36:34,633 INFO L231 Difference]: Finished difference. Result has 264 places, 259 transitions, 591 flow [2022-11-18 19:36:34,633 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=591, PETRI_PLACES=264, PETRI_TRANSITIONS=259} [2022-11-18 19:36:34,634 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 10 predicate places. [2022-11-18 19:36:34,634 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 259 transitions, 591 flow [2022-11-18 19:36:34,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 257.6) internal successors, (1288), 5 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:34,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:34,635 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:34,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:36:34,636 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:34,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1497661766, now seen corresponding path program 1 times [2022-11-18 19:36:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:34,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864756186] [2022-11-18 19:36:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:34,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:34,730 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 19:36:34,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:34,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864756186] [2022-11-18 19:36:34,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864756186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:34,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:34,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:36:34,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949053034] [2022-11-18 19:36:34,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:34,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:34,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:34,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:34,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:34,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-18 19:36:34,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 259 transitions, 591 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 19:36:34,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:34,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-18 19:36:34,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:35,197 INFO L130 PetriNetUnfolder]: 371/1844 cut-off events. [2022-11-18 19:36:35,197 INFO L131 PetriNetUnfolder]: For 358/618 co-relation queries the response was YES. [2022-11-18 19:36:35,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2646 conditions, 1844 events. 371/1844 cut-off events. For 358/618 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17860 event pairs, 144 based on Foata normal form. 0/1425 useless extension candidates. Maximal degree in co-relation 2575. Up to 338 conditions per place. [2022-11-18 19:36:35,233 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 35 selfloop transitions, 4 changer transitions 0/271 dead transitions. [2022-11-18 19:36:35,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 271 transitions, 697 flow [2022-11-18 19:36:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:35,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:36:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1077 transitions. [2022-11-18 19:36:35,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065656565656566 [2022-11-18 19:36:35,237 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1077 transitions. [2022-11-18 19:36:35,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1077 transitions. [2022-11-18 19:36:35,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:35,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1077 transitions. [2022-11-18 19:36:35,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.25) internal successors, (1077), 4 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:35,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:35,244 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:35,244 INFO L175 Difference]: Start difference. First operand has 264 places, 259 transitions, 591 flow. Second operand 4 states and 1077 transitions. [2022-11-18 19:36:35,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 271 transitions, 697 flow [2022-11-18 19:36:35,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 271 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:36:35,250 INFO L231 Difference]: Finished difference. Result has 268 places, 260 transitions, 612 flow [2022-11-18 19:36:35,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=612, PETRI_PLACES=268, PETRI_TRANSITIONS=260} [2022-11-18 19:36:35,252 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 14 predicate places. [2022-11-18 19:36:35,252 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 260 transitions, 612 flow [2022-11-18 19:36:35,253 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 19:36:35,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:35,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:35,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:36:35,254 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash -16617281, now seen corresponding path program 1 times [2022-11-18 19:36:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:35,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502100279] [2022-11-18 19:36:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:35,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,318 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 19:36:35,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:35,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502100279] [2022-11-18 19:36:35,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502100279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:35,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:35,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:36:35,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157585935] [2022-11-18 19:36:35,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:35,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:35,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:35,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:35,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:35,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-18 19:36:35,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 260 transitions, 612 flow. Second operand has 4 states, 4 states have (on average 261.5) internal successors, (1046), 4 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:35,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:35,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-18 19:36:35,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:35,729 INFO L130 PetriNetUnfolder]: 134/1125 cut-off events. [2022-11-18 19:36:35,730 INFO L131 PetriNetUnfolder]: For 168/458 co-relation queries the response was YES. [2022-11-18 19:36:35,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 1125 events. 134/1125 cut-off events. For 168/458 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8766 event pairs, 48 based on Foata normal form. 5/965 useless extension candidates. Maximal degree in co-relation 1403. Up to 121 conditions per place. [2022-11-18 19:36:35,775 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 36 selfloop transitions, 3 changer transitions 0/271 dead transitions. [2022-11-18 19:36:35,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 271 transitions, 715 flow [2022-11-18 19:36:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:36:35,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1076 transitions. [2022-11-18 19:36:35,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9057239057239057 [2022-11-18 19:36:35,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1076 transitions. [2022-11-18 19:36:35,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1076 transitions. [2022-11-18 19:36:35,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:35,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1076 transitions. [2022-11-18 19:36:35,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:35,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:35,786 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:35,786 INFO L175 Difference]: Start difference. First operand has 268 places, 260 transitions, 612 flow. Second operand 4 states and 1076 transitions. [2022-11-18 19:36:35,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 271 transitions, 715 flow [2022-11-18 19:36:35,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 271 transitions, 713 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:36:35,794 INFO L231 Difference]: Finished difference. Result has 270 places, 259 transitions, 610 flow [2022-11-18 19:36:35,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=610, PETRI_PLACES=270, PETRI_TRANSITIONS=259} [2022-11-18 19:36:35,796 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 16 predicate places. [2022-11-18 19:36:35,796 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 259 transitions, 610 flow [2022-11-18 19:36:35,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.5) internal successors, (1046), 4 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:35,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:35,797 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:35,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:36:35,798 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:35,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:35,799 INFO L85 PathProgramCache]: Analyzing trace with hash -515134880, now seen corresponding path program 1 times [2022-11-18 19:36:35,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:35,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767675343] [2022-11-18 19:36:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:35,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:35,909 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 19:36:35,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:35,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767675343] [2022-11-18 19:36:35,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767675343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:35,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:35,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:35,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757970753] [2022-11-18 19:36:35,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:35,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:35,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:35,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:35,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:35,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-18 19:36:35,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 259 transitions, 610 flow. Second operand has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:35,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:35,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-18 19:36:35,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:36,999 INFO L130 PetriNetUnfolder]: 726/4156 cut-off events. [2022-11-18 19:36:36,999 INFO L131 PetriNetUnfolder]: For 454/506 co-relation queries the response was YES. [2022-11-18 19:36:37,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5746 conditions, 4156 events. 726/4156 cut-off events. For 454/506 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 41713 event pairs, 68 based on Foata normal form. 0/3422 useless extension candidates. Maximal degree in co-relation 5426. Up to 899 conditions per place. [2022-11-18 19:36:37,063 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 38 selfloop transitions, 5 changer transitions 0/269 dead transitions. [2022-11-18 19:36:37,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 269 transitions, 723 flow [2022-11-18 19:36:37,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:36:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1556 transitions. [2022-11-18 19:36:37,069 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8731762065095399 [2022-11-18 19:36:37,069 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1556 transitions. [2022-11-18 19:36:37,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1556 transitions. [2022-11-18 19:36:37,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:37,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1556 transitions. [2022-11-18 19:36:37,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:37,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:37,077 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:37,077 INFO L175 Difference]: Start difference. First operand has 270 places, 259 transitions, 610 flow. Second operand 6 states and 1556 transitions. [2022-11-18 19:36:37,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 269 transitions, 723 flow [2022-11-18 19:36:37,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 269 transitions, 718 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:36:37,085 INFO L231 Difference]: Finished difference. Result has 272 places, 258 transitions, 613 flow [2022-11-18 19:36:37,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=613, PETRI_PLACES=272, PETRI_TRANSITIONS=258} [2022-11-18 19:36:37,086 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 18 predicate places. [2022-11-18 19:36:37,086 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 258 transitions, 613 flow [2022-11-18 19:36:37,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.5) internal successors, (1527), 6 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:37,087 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:37,087 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:37,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:36:37,087 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1635983760, now seen corresponding path program 1 times [2022-11-18 19:36:37,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:37,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621239211] [2022-11-18 19:36:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:37,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:37,233 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 19:36:37,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621239211] [2022-11-18 19:36:37,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621239211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:37,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:37,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:36:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704548469] [2022-11-18 19:36:37,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:37,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:36:37,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:37,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:36:37,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:37,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-18 19:36:37,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 258 transitions, 613 flow. Second operand has 8 states, 8 states have (on average 249.125) internal successors, (1993), 8 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:37,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:37,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-18 19:36:37,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:38,204 INFO L130 PetriNetUnfolder]: 447/3165 cut-off events. [2022-11-18 19:36:38,204 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-11-18 19:36:38,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 3165 events. 447/3165 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 30456 event pairs, 32 based on Foata normal form. 0/2778 useless extension candidates. Maximal degree in co-relation 4283. Up to 309 conditions per place. [2022-11-18 19:36:38,282 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 53 selfloop transitions, 11 changer transitions 0/282 dead transitions. [2022-11-18 19:36:38,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 282 transitions, 811 flow [2022-11-18 19:36:38,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:36:38,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:36:38,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2038 transitions. [2022-11-18 19:36:38,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577441077441077 [2022-11-18 19:36:38,288 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2038 transitions. [2022-11-18 19:36:38,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2038 transitions. [2022-11-18 19:36:38,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:38,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2038 transitions. [2022-11-18 19:36:38,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.75) internal successors, (2038), 8 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:38,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:38,298 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:38,299 INFO L175 Difference]: Start difference. First operand has 272 places, 258 transitions, 613 flow. Second operand 8 states and 2038 transitions. [2022-11-18 19:36:38,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 282 transitions, 811 flow [2022-11-18 19:36:38,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 282 transitions, 794 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:36:38,306 INFO L231 Difference]: Finished difference. Result has 277 places, 259 transitions, 640 flow [2022-11-18 19:36:38,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=640, PETRI_PLACES=277, PETRI_TRANSITIONS=259} [2022-11-18 19:36:38,307 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 23 predicate places. [2022-11-18 19:36:38,308 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 259 transitions, 640 flow [2022-11-18 19:36:38,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.125) internal successors, (1993), 8 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:38,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:38,309 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:38,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:36:38,309 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:38,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:38,310 INFO L85 PathProgramCache]: Analyzing trace with hash -824110216, now seen corresponding path program 1 times [2022-11-18 19:36:38,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:38,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579117864] [2022-11-18 19:36:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:38,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:38,454 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 19:36:38,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:38,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579117864] [2022-11-18 19:36:38,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579117864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:38,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:38,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:36:38,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996264492] [2022-11-18 19:36:38,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:38,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:36:38,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:38,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:36:38,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:38,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-18 19:36:38,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 259 transitions, 640 flow. Second operand has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:38,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:38,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-18 19:36:38,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:39,179 INFO L130 PetriNetUnfolder]: 371/2212 cut-off events. [2022-11-18 19:36:39,179 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2022-11-18 19:36:39,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3549 conditions, 2212 events. 371/2212 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 18993 event pairs, 28 based on Foata normal form. 0/1963 useless extension candidates. Maximal degree in co-relation 3481. Up to 289 conditions per place. [2022-11-18 19:36:39,244 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 55 selfloop transitions, 9 changer transitions 0/284 dead transitions. [2022-11-18 19:36:39,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 284 transitions, 834 flow [2022-11-18 19:36:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:36:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:36:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2040 transitions. [2022-11-18 19:36:39,250 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8585858585858586 [2022-11-18 19:36:39,250 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2040 transitions. [2022-11-18 19:36:39,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2040 transitions. [2022-11-18 19:36:39,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:39,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2040 transitions. [2022-11-18 19:36:39,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:39,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:39,261 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:39,261 INFO L175 Difference]: Start difference. First operand has 277 places, 259 transitions, 640 flow. Second operand 8 states and 2040 transitions. [2022-11-18 19:36:39,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 284 transitions, 834 flow [2022-11-18 19:36:39,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 284 transitions, 825 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:36:39,269 INFO L231 Difference]: Finished difference. Result has 282 places, 260 transitions, 661 flow [2022-11-18 19:36:39,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=661, PETRI_PLACES=282, PETRI_TRANSITIONS=260} [2022-11-18 19:36:39,271 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 28 predicate places. [2022-11-18 19:36:39,271 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 260 transitions, 661 flow [2022-11-18 19:36:39,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:39,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:39,273 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:39,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:36:39,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:39,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:39,274 INFO L85 PathProgramCache]: Analyzing trace with hash -248025757, now seen corresponding path program 1 times [2022-11-18 19:36:39,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:39,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316362320] [2022-11-18 19:36:39,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:39,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:39,394 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 19:36:39,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:39,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316362320] [2022-11-18 19:36:39,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316362320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:39,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:39,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:39,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351358008] [2022-11-18 19:36:39,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:39,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:36:39,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:39,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:36:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:36:39,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 297 [2022-11-18 19:36:39,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 260 transitions, 661 flow. Second operand has 5 states, 5 states have (on average 257.8) internal successors, (1289), 5 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:39,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:39,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 297 [2022-11-18 19:36:39,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:39,972 INFO L130 PetriNetUnfolder]: 162/1177 cut-off events. [2022-11-18 19:36:39,973 INFO L131 PetriNetUnfolder]: For 172/532 co-relation queries the response was YES. [2022-11-18 19:36:40,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 1177 events. 162/1177 cut-off events. For 172/532 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9626 event pairs, 60 based on Foata normal form. 0/1011 useless extension candidates. Maximal degree in co-relation 1558. Up to 153 conditions per place. [2022-11-18 19:36:40,031 INFO L137 encePairwiseOnDemand]: 290/297 looper letters, 43 selfloop transitions, 7 changer transitions 0/280 dead transitions. [2022-11-18 19:36:40,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 280 transitions, 812 flow [2022-11-18 19:36:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:40,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:36:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1581 transitions. [2022-11-18 19:36:40,036 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8872053872053872 [2022-11-18 19:36:40,036 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1581 transitions. [2022-11-18 19:36:40,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1581 transitions. [2022-11-18 19:36:40,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:40,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1581 transitions. [2022-11-18 19:36:40,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.5) internal successors, (1581), 6 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:40,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:40,047 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:40,047 INFO L175 Difference]: Start difference. First operand has 282 places, 260 transitions, 661 flow. Second operand 6 states and 1581 transitions. [2022-11-18 19:36:40,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 280 transitions, 812 flow [2022-11-18 19:36:40,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 280 transitions, 798 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 19:36:40,055 INFO L231 Difference]: Finished difference. Result has 283 places, 263 transitions, 682 flow [2022-11-18 19:36:40,056 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=682, PETRI_PLACES=283, PETRI_TRANSITIONS=263} [2022-11-18 19:36:40,057 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 29 predicate places. [2022-11-18 19:36:40,057 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 263 transitions, 682 flow [2022-11-18 19:36:40,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 257.8) internal successors, (1289), 5 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:40,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:40,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:40,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:36:40,059 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:40,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1922962820, now seen corresponding path program 1 times [2022-11-18 19:36:40,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:40,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104390174] [2022-11-18 19:36:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:40,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,211 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 19:36:40,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:40,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104390174] [2022-11-18 19:36:40,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104390174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:40,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:40,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:40,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552423002] [2022-11-18 19:36:40,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:40,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:40,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:40,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:40,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:40,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-18 19:36:40,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 263 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:40,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:40,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-18 19:36:40,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:40,691 INFO L130 PetriNetUnfolder]: 119/944 cut-off events. [2022-11-18 19:36:40,691 INFO L131 PetriNetUnfolder]: For 132/136 co-relation queries the response was YES. [2022-11-18 19:36:40,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 944 events. 119/944 cut-off events. For 132/136 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6636 event pairs, 58 based on Foata normal form. 3/869 useless extension candidates. Maximal degree in co-relation 1459. Up to 153 conditions per place. [2022-11-18 19:36:40,721 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 49 selfloop transitions, 7 changer transitions 0/279 dead transitions. [2022-11-18 19:36:40,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 279 transitions, 841 flow [2022-11-18 19:36:40,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:36:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:36:40,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1796 transitions. [2022-11-18 19:36:40,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638768638768639 [2022-11-18 19:36:40,728 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1796 transitions. [2022-11-18 19:36:40,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1796 transitions. [2022-11-18 19:36:40,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:40,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1796 transitions. [2022-11-18 19:36:40,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.57142857142856) internal successors, (1796), 7 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:40,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:40,741 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:40,742 INFO L175 Difference]: Start difference. First operand has 283 places, 263 transitions, 682 flow. Second operand 7 states and 1796 transitions. [2022-11-18 19:36:40,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 279 transitions, 841 flow [2022-11-18 19:36:40,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 279 transitions, 835 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:36:40,751 INFO L231 Difference]: Finished difference. Result has 290 places, 266 transitions, 712 flow [2022-11-18 19:36:40,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=290, PETRI_TRANSITIONS=266} [2022-11-18 19:36:40,752 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 36 predicate places. [2022-11-18 19:36:40,752 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 266 transitions, 712 flow [2022-11-18 19:36:40,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:40,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:40,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:40,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:36:40,754 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:40,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:40,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1244725717, now seen corresponding path program 1 times [2022-11-18 19:36:40,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:40,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282366341] [2022-11-18 19:36:40,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:40,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:40,916 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 19:36:40,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:40,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282366341] [2022-11-18 19:36:40,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282366341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:40,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:40,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:40,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954940018] [2022-11-18 19:36:40,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:40,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:40,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:40,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:40,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:40,926 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-18 19:36:40,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 266 transitions, 712 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 19:36:40,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:40,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-18 19:36:40,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:41,403 INFO L130 PetriNetUnfolder]: 113/935 cut-off events. [2022-11-18 19:36:41,406 INFO L131 PetriNetUnfolder]: For 146/150 co-relation queries the response was YES. [2022-11-18 19:36:41,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 935 events. 113/935 cut-off events. For 146/150 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6545 event pairs, 46 based on Foata normal form. 3/874 useless extension candidates. Maximal degree in co-relation 1502. Up to 126 conditions per place. [2022-11-18 19:36:41,443 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 55 selfloop transitions, 8 changer transitions 0/288 dead transitions. [2022-11-18 19:36:41,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 288 transitions, 914 flow [2022-11-18 19:36:41,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:36:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:36:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1802 transitions. [2022-11-18 19:36:41,449 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8667628667628667 [2022-11-18 19:36:41,450 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1802 transitions. [2022-11-18 19:36:41,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1802 transitions. [2022-11-18 19:36:41,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:41,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1802 transitions. [2022-11-18 19:36:41,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:41,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:41,462 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:41,464 INFO L175 Difference]: Start difference. First operand has 290 places, 266 transitions, 712 flow. Second operand 7 states and 1802 transitions. [2022-11-18 19:36:41,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 288 transitions, 914 flow [2022-11-18 19:36:41,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 288 transitions, 912 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:36:41,474 INFO L231 Difference]: Finished difference. Result has 298 places, 270 transitions, 759 flow [2022-11-18 19:36:41,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=759, PETRI_PLACES=298, PETRI_TRANSITIONS=270} [2022-11-18 19:36:41,476 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 44 predicate places. [2022-11-18 19:36:41,476 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 270 transitions, 759 flow [2022-11-18 19:36:41,479 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 19:36:41,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:41,479 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:41,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:36:41,480 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:41,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:41,480 INFO L85 PathProgramCache]: Analyzing trace with hash 693092001, now seen corresponding path program 1 times [2022-11-18 19:36:41,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:41,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041898141] [2022-11-18 19:36:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:41,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:41,557 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 19:36:41,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:41,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041898141] [2022-11-18 19:36:41,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041898141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:41,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:41,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:36:41,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737271983] [2022-11-18 19:36:41,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:41,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:41,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:41,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:41,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:41,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-18 19:36:41,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 270 transitions, 759 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 19:36:41,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:41,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-18 19:36:41,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:42,116 INFO L130 PetriNetUnfolder]: 357/1832 cut-off events. [2022-11-18 19:36:42,116 INFO L131 PetriNetUnfolder]: For 526/786 co-relation queries the response was YES. [2022-11-18 19:36:42,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2829 conditions, 1832 events. 357/1832 cut-off events. For 526/786 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17624 event pairs, 144 based on Foata normal form. 13/1463 useless extension candidates. Maximal degree in co-relation 2744. Up to 316 conditions per place. [2022-11-18 19:36:42,145 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 35 selfloop transitions, 3 changer transitions 0/280 dead transitions. [2022-11-18 19:36:42,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 280 transitions, 855 flow [2022-11-18 19:36:42,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:36:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1075 transitions. [2022-11-18 19:36:42,148 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9048821548821548 [2022-11-18 19:36:42,148 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1075 transitions. [2022-11-18 19:36:42,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1075 transitions. [2022-11-18 19:36:42,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:42,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1075 transitions. [2022-11-18 19:36:42,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.75) internal successors, (1075), 4 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:42,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:42,155 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:42,155 INFO L175 Difference]: Start difference. First operand has 298 places, 270 transitions, 759 flow. Second operand 4 states and 1075 transitions. [2022-11-18 19:36:42,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 280 transitions, 855 flow [2022-11-18 19:36:42,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 280 transitions, 853 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:36:42,163 INFO L231 Difference]: Finished difference. Result has 300 places, 269 transitions, 757 flow [2022-11-18 19:36:42,164 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=757, PETRI_PLACES=300, PETRI_TRANSITIONS=269} [2022-11-18 19:36:42,164 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 46 predicate places. [2022-11-18 19:36:42,164 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 269 transitions, 757 flow [2022-11-18 19:36:42,165 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 19:36:42,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:42,165 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:42,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:36:42,166 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:42,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:42,166 INFO L85 PathProgramCache]: Analyzing trace with hash 605582085, now seen corresponding path program 1 times [2022-11-18 19:36:42,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:42,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420124089] [2022-11-18 19:36:42,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:42,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:42,331 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 19:36:42,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:42,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420124089] [2022-11-18 19:36:42,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420124089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:42,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:42,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:36:42,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746645737] [2022-11-18 19:36:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:42,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:36:42,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:36:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:42,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-18 19:36:42,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 269 transitions, 757 flow. Second operand has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:42,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:42,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-18 19:36:42,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:43,026 INFO L130 PetriNetUnfolder]: 480/2225 cut-off events. [2022-11-18 19:36:43,026 INFO L131 PetriNetUnfolder]: For 361/361 co-relation queries the response was YES. [2022-11-18 19:36:43,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3887 conditions, 2225 events. 480/2225 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 18595 event pairs, 32 based on Foata normal form. 0/1939 useless extension candidates. Maximal degree in co-relation 3812. Up to 353 conditions per place. [2022-11-18 19:36:43,101 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 52 selfloop transitions, 11 changer transitions 0/292 dead transitions. [2022-11-18 19:36:43,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 292 transitions, 942 flow [2022-11-18 19:36:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:36:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:36:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2037 transitions. [2022-11-18 19:36:43,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8573232323232324 [2022-11-18 19:36:43,107 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2037 transitions. [2022-11-18 19:36:43,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2037 transitions. [2022-11-18 19:36:43,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:43,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2037 transitions. [2022-11-18 19:36:43,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.625) internal successors, (2037), 8 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:43,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:43,119 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:43,120 INFO L175 Difference]: Start difference. First operand has 300 places, 269 transitions, 757 flow. Second operand 8 states and 2037 transitions. [2022-11-18 19:36:43,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 292 transitions, 942 flow [2022-11-18 19:36:43,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 292 transitions, 937 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:36:43,129 INFO L231 Difference]: Finished difference. Result has 307 places, 270 transitions, 788 flow [2022-11-18 19:36:43,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=307, PETRI_TRANSITIONS=270} [2022-11-18 19:36:43,130 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 53 predicate places. [2022-11-18 19:36:43,130 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 270 transitions, 788 flow [2022-11-18 19:36:43,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.25) internal successors, (1994), 8 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:43,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:43,131 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:43,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:36:43,132 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:43,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:43,132 INFO L85 PathProgramCache]: Analyzing trace with hash 11016449, now seen corresponding path program 1 times [2022-11-18 19:36:43,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:43,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335297120] [2022-11-18 19:36:43,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:43,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:43,223 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 19:36:43,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:43,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335297120] [2022-11-18 19:36:43,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335297120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:43,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:43,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:43,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212196913] [2022-11-18 19:36:43,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:43,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:43,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:43,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 297 [2022-11-18 19:36:43,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 270 transitions, 788 flow. Second operand has 6 states, 6 states have (on average 254.66666666666666) internal successors, (1528), 6 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:43,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:43,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 297 [2022-11-18 19:36:43,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:44,274 INFO L130 PetriNetUnfolder]: 897/4288 cut-off events. [2022-11-18 19:36:44,274 INFO L131 PetriNetUnfolder]: For 806/816 co-relation queries the response was YES. [2022-11-18 19:36:44,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 4288 events. 897/4288 cut-off events. For 806/816 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41627 event pairs, 87 based on Foata normal form. 0/3460 useless extension candidates. Maximal degree in co-relation 6146. Up to 1185 conditions per place. [2022-11-18 19:36:44,335 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 37 selfloop transitions, 5 changer transitions 0/279 dead transitions. [2022-11-18 19:36:44,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 279 transitions, 898 flow [2022-11-18 19:36:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:36:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:36:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1555 transitions. [2022-11-18 19:36:44,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8726150392817059 [2022-11-18 19:36:44,339 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1555 transitions. [2022-11-18 19:36:44,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1555 transitions. [2022-11-18 19:36:44,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:44,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1555 transitions. [2022-11-18 19:36:44,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.1666666666667) internal successors, (1555), 6 states have internal predecessors, (1555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:44,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:44,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:44,347 INFO L175 Difference]: Start difference. First operand has 307 places, 270 transitions, 788 flow. Second operand 6 states and 1555 transitions. [2022-11-18 19:36:44,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 279 transitions, 898 flow [2022-11-18 19:36:44,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 279 transitions, 885 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:36:44,356 INFO L231 Difference]: Finished difference. Result has 307 places, 269 transitions, 787 flow [2022-11-18 19:36:44,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=787, PETRI_PLACES=307, PETRI_TRANSITIONS=269} [2022-11-18 19:36:44,357 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 53 predicate places. [2022-11-18 19:36:44,358 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 269 transitions, 787 flow [2022-11-18 19:36:44,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.66666666666666) internal successors, (1528), 6 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:44,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:44,359 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:44,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:36:44,359 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:44,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:44,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1593176294, now seen corresponding path program 1 times [2022-11-18 19:36:44,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:44,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735072995] [2022-11-18 19:36:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:44,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:44,509 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 19:36:44,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:44,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735072995] [2022-11-18 19:36:44,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735072995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:44,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:44,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:36:44,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303881938] [2022-11-18 19:36:44,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:44,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:36:44,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:44,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:36:44,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:44,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-18 19:36:44,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 269 transitions, 787 flow. Second operand has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:44,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:44,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-18 19:36:44,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:45,239 INFO L130 PetriNetUnfolder]: 428/2161 cut-off events. [2022-11-18 19:36:45,239 INFO L131 PetriNetUnfolder]: For 425/425 co-relation queries the response was YES. [2022-11-18 19:36:45,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3843 conditions, 2161 events. 428/2161 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 17830 event pairs, 32 based on Foata normal form. 0/1914 useless extension candidates. Maximal degree in co-relation 3768. Up to 329 conditions per place. [2022-11-18 19:36:45,284 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 54 selfloop transitions, 9 changer transitions 0/293 dead transitions. [2022-11-18 19:36:45,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 293 transitions, 976 flow [2022-11-18 19:36:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:36:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:36:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2039 transitions. [2022-11-18 19:36:45,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8581649831649831 [2022-11-18 19:36:45,289 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2039 transitions. [2022-11-18 19:36:45,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2039 transitions. [2022-11-18 19:36:45,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:45,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2039 transitions. [2022-11-18 19:36:45,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.875) internal successors, (2039), 8 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:45,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:45,300 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:45,301 INFO L175 Difference]: Start difference. First operand has 307 places, 269 transitions, 787 flow. Second operand 8 states and 2039 transitions. [2022-11-18 19:36:45,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 293 transitions, 976 flow [2022-11-18 19:36:45,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 293 transitions, 967 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:36:45,310 INFO L231 Difference]: Finished difference. Result has 312 places, 270 transitions, 808 flow [2022-11-18 19:36:45,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=808, PETRI_PLACES=312, PETRI_TRANSITIONS=270} [2022-11-18 19:36:45,311 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 58 predicate places. [2022-11-18 19:36:45,312 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 270 transitions, 808 flow [2022-11-18 19:36:45,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:45,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:45,313 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:45,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:36:45,313 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:45,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1422737372, now seen corresponding path program 1 times [2022-11-18 19:36:45,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:45,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142992911] [2022-11-18 19:36:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:45,383 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 19:36:45,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:45,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142992911] [2022-11-18 19:36:45,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142992911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:45,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:45,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:36:45,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268710083] [2022-11-18 19:36:45,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:45,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:36:45,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:36:45,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:36:45,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 297 [2022-11-18 19:36:45,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 270 transitions, 808 flow. Second operand has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:45,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:45,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 297 [2022-11-18 19:36:45,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:46,022 INFO L130 PetriNetUnfolder]: 440/2239 cut-off events. [2022-11-18 19:36:46,022 INFO L131 PetriNetUnfolder]: For 518/824 co-relation queries the response was YES. [2022-11-18 19:36:46,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3453 conditions, 2239 events. 440/2239 cut-off events. For 518/824 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 23020 event pairs, 216 based on Foata normal form. 13/1784 useless extension candidates. Maximal degree in co-relation 3361. Up to 466 conditions per place. [2022-11-18 19:36:46,045 INFO L137 encePairwiseOnDemand]: 293/297 looper letters, 32 selfloop transitions, 3 changer transitions 0/280 dead transitions. [2022-11-18 19:36:46,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 280 transitions, 900 flow [2022-11-18 19:36:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:36:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:36:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1072 transitions. [2022-11-18 19:36:46,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9023569023569024 [2022-11-18 19:36:46,048 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1072 transitions. [2022-11-18 19:36:46,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1072 transitions. [2022-11-18 19:36:46,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:46,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1072 transitions. [2022-11-18 19:36:46,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:46,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:46,053 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:46,054 INFO L175 Difference]: Start difference. First operand has 312 places, 270 transitions, 808 flow. Second operand 4 states and 1072 transitions. [2022-11-18 19:36:46,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 280 transitions, 900 flow [2022-11-18 19:36:46,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 280 transitions, 889 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:36:46,061 INFO L231 Difference]: Finished difference. Result has 310 places, 270 transitions, 806 flow [2022-11-18 19:36:46,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=806, PETRI_PLACES=310, PETRI_TRANSITIONS=270} [2022-11-18 19:36:46,062 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 56 predicate places. [2022-11-18 19:36:46,062 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 270 transitions, 806 flow [2022-11-18 19:36:46,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:46,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:46,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:46,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:36:46,064 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:46,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1807035594, now seen corresponding path program 1 times [2022-11-18 19:36:46,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:46,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646275236] [2022-11-18 19:36:46,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:46,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:46,176 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 19:36:46,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:46,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646275236] [2022-11-18 19:36:46,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646275236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:46,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:46,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628748127] [2022-11-18 19:36:46,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:46,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:46,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:46,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:46,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:46,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-18 19:36:46,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 270 transitions, 806 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 19:36:46,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:46,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-18 19:36:46,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:46,738 INFO L130 PetriNetUnfolder]: 214/1156 cut-off events. [2022-11-18 19:36:46,738 INFO L131 PetriNetUnfolder]: For 369/676 co-relation queries the response was YES. [2022-11-18 19:36:46,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103 conditions, 1156 events. 214/1156 cut-off events. For 369/676 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9776 event pairs, 116 based on Foata normal form. 5/1010 useless extension candidates. Maximal degree in co-relation 1915. Up to 271 conditions per place. [2022-11-18 19:36:46,773 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 48 selfloop transitions, 7 changer transitions 0/285 dead transitions. [2022-11-18 19:36:46,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 285 transitions, 960 flow [2022-11-18 19:36:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:36:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:36:46,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1795 transitions. [2022-11-18 19:36:46,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633958633958634 [2022-11-18 19:36:46,778 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1795 transitions. [2022-11-18 19:36:46,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1795 transitions. [2022-11-18 19:36:46,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:46,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1795 transitions. [2022-11-18 19:36:46,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.42857142857144) internal successors, (1795), 7 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:46,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:46,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:46,786 INFO L175 Difference]: Start difference. First operand has 310 places, 270 transitions, 806 flow. Second operand 7 states and 1795 transitions. [2022-11-18 19:36:46,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 285 transitions, 960 flow [2022-11-18 19:36:46,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 285 transitions, 955 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:36:46,794 INFO L231 Difference]: Finished difference. Result has 317 places, 273 transitions, 837 flow [2022-11-18 19:36:46,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=837, PETRI_PLACES=317, PETRI_TRANSITIONS=273} [2022-11-18 19:36:46,795 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 63 predicate places. [2022-11-18 19:36:46,795 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 273 transitions, 837 flow [2022-11-18 19:36:46,796 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 19:36:46,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:46,797 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:46,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:36:46,797 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:46,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash 910559626, now seen corresponding path program 1 times [2022-11-18 19:36:46,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:46,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034090361] [2022-11-18 19:36:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:46,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:46,920 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 19:36:46,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:46,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034090361] [2022-11-18 19:36:46,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034090361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:46,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:46,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:46,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535305764] [2022-11-18 19:36:46,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:46,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:46,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:46,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:46,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-18 19:36:46,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 273 transitions, 837 flow. Second operand has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:46,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:46,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-18 19:36:46,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:47,394 INFO L130 PetriNetUnfolder]: 202/1139 cut-off events. [2022-11-18 19:36:47,394 INFO L131 PetriNetUnfolder]: For 386/676 co-relation queries the response was YES. [2022-11-18 19:36:47,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2181 conditions, 1139 events. 202/1139 cut-off events. For 386/676 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9351 event pairs, 92 based on Foata normal form. 5/1024 useless extension candidates. Maximal degree in co-relation 1993. Up to 222 conditions per place. [2022-11-18 19:36:47,428 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 54 selfloop transitions, 8 changer transitions 0/294 dead transitions. [2022-11-18 19:36:47,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 294 transitions, 1034 flow [2022-11-18 19:36:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:36:47,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:36:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1801 transitions. [2022-11-18 19:36:47,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8662818662818663 [2022-11-18 19:36:47,431 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1801 transitions. [2022-11-18 19:36:47,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1801 transitions. [2022-11-18 19:36:47,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:47,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1801 transitions. [2022-11-18 19:36:47,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 257.2857142857143) internal successors, (1801), 7 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:47,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:47,439 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:47,439 INFO L175 Difference]: Start difference. First operand has 317 places, 273 transitions, 837 flow. Second operand 7 states and 1801 transitions. [2022-11-18 19:36:47,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 294 transitions, 1034 flow [2022-11-18 19:36:47,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 294 transitions, 1032 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:36:47,448 INFO L231 Difference]: Finished difference. Result has 325 places, 277 transitions, 884 flow [2022-11-18 19:36:47,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=884, PETRI_PLACES=325, PETRI_TRANSITIONS=277} [2022-11-18 19:36:47,449 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 71 predicate places. [2022-11-18 19:36:47,449 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 277 transitions, 884 flow [2022-11-18 19:36:47,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:47,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:47,450 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:47,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 19:36:47,450 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:47,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:47,451 INFO L85 PathProgramCache]: Analyzing trace with hash -153487866, now seen corresponding path program 1 times [2022-11-18 19:36:47,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:47,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97062831] [2022-11-18 19:36:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:47,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:47,568 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 19:36:47,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:47,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97062831] [2022-11-18 19:36:47,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97062831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:47,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:47,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:36:47,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149192509] [2022-11-18 19:36:47,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:47,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:36:47,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:47,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:36:47,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:47,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-18 19:36:47,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 277 transitions, 884 flow. Second operand has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:47,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:47,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-18 19:36:47,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:48,647 INFO L130 PetriNetUnfolder]: 620/3210 cut-off events. [2022-11-18 19:36:48,647 INFO L131 PetriNetUnfolder]: For 688/1006 co-relation queries the response was YES. [2022-11-18 19:36:48,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5117 conditions, 3210 events. 620/3210 cut-off events. For 688/1006 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31906 event pairs, 36 based on Foata normal form. 0/2660 useless extension candidates. Maximal degree in co-relation 4588. Up to 558 conditions per place. [2022-11-18 19:36:48,721 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 50 selfloop transitions, 9 changer transitions 0/299 dead transitions. [2022-11-18 19:36:48,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 299 transitions, 1054 flow [2022-11-18 19:36:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:36:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:36:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2036 transitions. [2022-11-18 19:36:48,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8569023569023569 [2022-11-18 19:36:48,731 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2036 transitions. [2022-11-18 19:36:48,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2036 transitions. [2022-11-18 19:36:48,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:48,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2036 transitions. [2022-11-18 19:36:48,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.5) internal successors, (2036), 8 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:48,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:48,742 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:48,742 INFO L175 Difference]: Start difference. First operand has 325 places, 277 transitions, 884 flow. Second operand 8 states and 2036 transitions. [2022-11-18 19:36:48,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 299 transitions, 1054 flow [2022-11-18 19:36:48,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 299 transitions, 1054 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:36:48,753 INFO L231 Difference]: Finished difference. Result has 334 places, 278 transitions, 914 flow [2022-11-18 19:36:48,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=914, PETRI_PLACES=334, PETRI_TRANSITIONS=278} [2022-11-18 19:36:48,755 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 80 predicate places. [2022-11-18 19:36:48,755 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 278 transitions, 914 flow [2022-11-18 19:36:48,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:48,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:48,756 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:48,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 19:36:48,757 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:48,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:48,757 INFO L85 PathProgramCache]: Analyzing trace with hash -463155640, now seen corresponding path program 1 times [2022-11-18 19:36:48,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:48,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619376099] [2022-11-18 19:36:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:48,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:48,912 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 19:36:48,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:48,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619376099] [2022-11-18 19:36:48,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619376099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:48,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:48,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:36:48,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050745231] [2022-11-18 19:36:48,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:48,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:36:48,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:48,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:36:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:36:48,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 297 [2022-11-18 19:36:48,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 278 transitions, 914 flow. Second operand has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:48,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:48,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 297 [2022-11-18 19:36:48,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:49,914 INFO L130 PetriNetUnfolder]: 530/3100 cut-off events. [2022-11-18 19:36:49,914 INFO L131 PetriNetUnfolder]: For 762/1346 co-relation queries the response was YES. [2022-11-18 19:36:49,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5051 conditions, 3100 events. 530/3100 cut-off events. For 762/1346 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 30377 event pairs, 48 based on Foata normal form. 0/2649 useless extension candidates. Maximal degree in co-relation 4516. Up to 496 conditions per place. [2022-11-18 19:36:49,979 INFO L137 encePairwiseOnDemand]: 287/297 looper letters, 53 selfloop transitions, 9 changer transitions 0/302 dead transitions. [2022-11-18 19:36:49,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 302 transitions, 1101 flow [2022-11-18 19:36:49,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:36:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:36:49,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2038 transitions. [2022-11-18 19:36:49,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8577441077441077 [2022-11-18 19:36:49,983 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2038 transitions. [2022-11-18 19:36:49,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2038 transitions. [2022-11-18 19:36:49,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:49,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2038 transitions. [2022-11-18 19:36:49,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 254.75) internal successors, (2038), 8 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:49,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:49,991 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:49,992 INFO L175 Difference]: Start difference. First operand has 334 places, 278 transitions, 914 flow. Second operand 8 states and 2038 transitions. [2022-11-18 19:36:49,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 302 transitions, 1101 flow [2022-11-18 19:36:50,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 302 transitions, 1092 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:36:50,004 INFO L231 Difference]: Finished difference. Result has 339 places, 279 transitions, 935 flow [2022-11-18 19:36:50,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=935, PETRI_PLACES=339, PETRI_TRANSITIONS=279} [2022-11-18 19:36:50,006 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 85 predicate places. [2022-11-18 19:36:50,006 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 279 transitions, 935 flow [2022-11-18 19:36:50,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 249.5) internal successors, (1996), 8 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:50,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:50,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:50,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 19:36:50,007 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:50,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1357005324, now seen corresponding path program 1 times [2022-11-18 19:36:50,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:50,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851554557] [2022-11-18 19:36:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:50,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:50,127 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 19:36:50,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:50,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851554557] [2022-11-18 19:36:50,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851554557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:50,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:50,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:50,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655816561] [2022-11-18 19:36:50,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:50,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:50,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:50,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:50,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:50,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-18 19:36:50,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 279 transitions, 935 flow. Second operand has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:50,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:50,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-18 19:36:50,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:50,871 INFO L130 PetriNetUnfolder]: 656/2384 cut-off events. [2022-11-18 19:36:50,871 INFO L131 PetriNetUnfolder]: For 1028/1325 co-relation queries the response was YES. [2022-11-18 19:36:50,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 2384 events. 656/2384 cut-off events. For 1028/1325 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 26532 event pairs, 348 based on Foata normal form. 17/1905 useless extension candidates. Maximal degree in co-relation 4392. Up to 741 conditions per place. [2022-11-18 19:36:50,896 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 40 selfloop transitions, 7 changer transitions 4/293 dead transitions. [2022-11-18 19:36:50,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 293 transitions, 1073 flow [2022-11-18 19:36:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:36:50,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:36:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1794 transitions. [2022-11-18 19:36:50,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.862914862914863 [2022-11-18 19:36:50,899 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1794 transitions. [2022-11-18 19:36:50,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1794 transitions. [2022-11-18 19:36:50,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:50,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1794 transitions. [2022-11-18 19:36:50,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.2857142857143) internal successors, (1794), 7 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:50,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:50,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:50,906 INFO L175 Difference]: Start difference. First operand has 339 places, 279 transitions, 935 flow. Second operand 7 states and 1794 transitions. [2022-11-18 19:36:50,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 293 transitions, 1073 flow [2022-11-18 19:36:50,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 293 transitions, 1062 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:36:50,916 INFO L231 Difference]: Finished difference. Result has 343 places, 282 transitions, 960 flow [2022-11-18 19:36:50,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=960, PETRI_PLACES=343, PETRI_TRANSITIONS=282} [2022-11-18 19:36:50,917 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 89 predicate places. [2022-11-18 19:36:50,918 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 282 transitions, 960 flow [2022-11-18 19:36:50,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.66666666666666) internal successors, (1516), 6 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:50,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:36:50,918 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:36:50,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 19:36:50,919 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 19:36:50,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:36:50,919 INFO L85 PathProgramCache]: Analyzing trace with hash -155476789, now seen corresponding path program 1 times [2022-11-18 19:36:50,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:36:50,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34786835] [2022-11-18 19:36:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:36:50,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:36:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:36:51,043 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 19:36:51,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:36:51,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34786835] [2022-11-18 19:36:51,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34786835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:36:51,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:36:51,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:36:51,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799692617] [2022-11-18 19:36:51,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:36:51,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:36:51,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:36:51,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:36:51,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:36:51,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 297 [2022-11-18 19:36:51,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 282 transitions, 960 flow. Second operand has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:51,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:36:51,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 297 [2022-11-18 19:36:51,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:36:51,909 INFO L130 PetriNetUnfolder]: 608/2323 cut-off events. [2022-11-18 19:36:51,909 INFO L131 PetriNetUnfolder]: For 1080/1360 co-relation queries the response was YES. [2022-11-18 19:36:51,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 2323 events. 608/2323 cut-off events. For 1080/1360 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 25516 event pairs, 288 based on Foata normal form. 13/1941 useless extension candidates. Maximal degree in co-relation 4594. Up to 616 conditions per place. [2022-11-18 19:36:51,963 INFO L137 encePairwiseOnDemand]: 289/297 looper letters, 0 selfloop transitions, 0 changer transitions 303/303 dead transitions. [2022-11-18 19:36:51,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 303 transitions, 1154 flow [2022-11-18 19:36:51,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:36:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:36:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1800 transitions. [2022-11-18 19:36:51,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8658008658008658 [2022-11-18 19:36:51,966 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1800 transitions. [2022-11-18 19:36:51,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1800 transitions. [2022-11-18 19:36:51,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:36:51,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1800 transitions. [2022-11-18 19:36:51,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 257.14285714285717) internal successors, (1800), 7 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:51,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:51,972 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 297.0) internal successors, (2376), 8 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:51,972 INFO L175 Difference]: Start difference. First operand has 343 places, 282 transitions, 960 flow. Second operand 7 states and 1800 transitions. [2022-11-18 19:36:51,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 303 transitions, 1154 flow [2022-11-18 19:36:51,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 303 transitions, 1152 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:36:51,986 INFO L231 Difference]: Finished difference. Result has 347 places, 0 transitions, 0 flow [2022-11-18 19:36:51,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=347, PETRI_TRANSITIONS=0} [2022-11-18 19:36:51,987 INFO L288 CegarLoopForPetriNet]: 254 programPoint places, 93 predicate places. [2022-11-18 19:36:51,987 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 0 transitions, 0 flow [2022-11-18 19:36:51,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.83333333333334) internal successors, (1517), 6 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:36:51,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-18 19:36:51,991 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-18 19:36:51,991 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-18 19:36:51,991 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-18 19:36:51,991 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-18 19:36:51,991 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-18 19:36:51,991 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-18 19:36:51,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-18 19:36:51,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-18 19:36:51,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-18 19:36:51,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-18 19:36:51,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-18 19:36:51,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-18 19:36:51,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-18 19:36:51,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-18 19:36:51,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-18 19:36:51,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-18 19:36:51,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-18 19:36:51,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-18 19:36:51,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-18 19:36:51,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-18 19:36:51,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-18 19:36:51,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-18 19:36:51,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-18 19:36:51,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-18 19:36:51,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-18 19:36:51,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-18 19:36:51,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-18 19:36:51,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-18 19:36:51,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-18 19:36:51,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-18 19:36:51,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-18 19:36:51,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-18 19:36:51,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-18 19:36:51,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-18 19:36:51,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-18 19:36:52,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-18 19:36:52,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-18 19:36:52,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-18 19:36:52,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 19:36:52,001 INFO L444 BasicCegarLoop]: Path program 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 19:36:52,007 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 19:36:52,007 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:36:52,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:36:52 BasicIcfg [2022-11-18 19:36:52,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:36:52,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:36:52,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:36:52,014 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:36:52,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:36:27" (3/4) ... [2022-11-18 19:36:52,017 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 19:36:52,023 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 19:36:52,023 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 19:36:52,023 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-18 19:36:52,030 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-18 19:36:52,030 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 19:36:52,031 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 19:36:52,031 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 19:36:52,076 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:36:52,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:36:52,077 INFO L158 Benchmark]: Toolchain (without parser) took 25553.05ms. Allocated memory was 115.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 87.7MB in the beginning and 943.9MB in the end (delta: -856.2MB). Peak memory consumption was 495.4MB. Max. memory is 16.1GB. [2022-11-18 19:36:52,078 INFO L158 Benchmark]: CDTParser took 0.64ms. Allocated memory is still 115.3MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:36:52,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.68ms. Allocated memory is still 115.3MB. Free memory was 87.4MB in the beginning and 90.6MB in the end (delta: -3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 19:36:52,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.45ms. Allocated memory is still 115.3MB. Free memory was 90.6MB in the beginning and 88.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:36:52,079 INFO L158 Benchmark]: Boogie Preprocessor took 58.96ms. Allocated memory is still 115.3MB. Free memory was 88.1MB in the beginning and 86.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:36:52,079 INFO L158 Benchmark]: RCFGBuilder took 822.45ms. Allocated memory is still 115.3MB. Free memory was 86.4MB in the beginning and 63.7MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-18 19:36:52,080 INFO L158 Benchmark]: TraceAbstraction took 24223.09ms. Allocated memory was 115.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 63.0MB in the beginning and 947.1MB in the end (delta: -884.1MB). Peak memory consumption was 467.6MB. Max. memory is 16.1GB. [2022-11-18 19:36:52,080 INFO L158 Benchmark]: Witness Printer took 62.59ms. Allocated memory is still 1.5GB. Free memory was 947.1MB in the beginning and 943.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 19:36:52,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64ms. Allocated memory is still 115.3MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.68ms. Allocated memory is still 115.3MB. Free memory was 87.4MB in the beginning and 90.6MB in the end (delta: -3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.45ms. Allocated memory is still 115.3MB. Free memory was 90.6MB in the beginning and 88.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.96ms. Allocated memory is still 115.3MB. Free memory was 88.1MB in the beginning and 86.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 822.45ms. Allocated memory is still 115.3MB. Free memory was 86.4MB in the beginning and 63.7MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 24223.09ms. Allocated memory was 115.3MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 63.0MB in the beginning and 947.1MB in the end (delta: -884.1MB). Peak memory consumption was 467.6MB. Max. memory is 16.1GB. * Witness Printer took 62.59ms. Allocated memory is still 1.5GB. Free memory was 947.1MB in the beginning and 943.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 461 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.9s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1571 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1571 mSDsluCounter, 805 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 428 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2976 IncrementalHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 377 mSDtfsCounter, 2976 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=960occurred in iteration=26, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1959 NumberOfCodeBlocks, 1959 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1932 ConstructedInterpolants, 0 QuantifiedInterpolants, 4247 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 19:36:52,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_915770d8-ecfe-4023-b428-2db6a85438e1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE