./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8 --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 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac --- 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-e04fb08 [2022-11-16 12:25:35,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:25:35,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:25:36,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:25:36,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:25:36,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:25:36,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:25:36,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:25:36,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:25:36,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:25:36,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:25:36,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:25:36,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:25:36,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:25:36,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:25:36,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:25:36,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:25:36,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:25:36,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:25:36,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:25:36,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:25:36,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:25:36,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:25:36,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:25:36,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:25:36,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:25:36,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:25:36,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:25:36,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:25:36,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:25:36,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:25:36,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:25:36,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:25:36,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:25:36,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:25:36,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:25:36,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:25:36,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:25:36,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:25:36,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:25:36,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:25:36,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:25:36,133 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:25:36,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:25:36,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:25:36,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:25:36,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:25:36,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:25:36,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:25:36,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:25:36,136 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:25:36,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:25:36,137 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:25:36,138 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:25:36,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:25:36,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:25:36,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:25:36,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:25:36,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:25:36,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:25:36,139 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:25:36,139 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:25:36,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:25:36,140 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:25:36,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:25:36,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:25:36,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:25:36,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:25:36,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:25:36,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:25:36,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:25:36,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:25:36,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:25:36,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:25:36,142 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:25:36,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:25:36,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:25:36,143 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_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac [2022-11-16 12:25:36,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:25:36,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:25:36,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:25:36,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:25:36,493 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:25:36,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-11-16 12:25:36,578 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/data/fb2f60e26/97675db8f62f41e78a00ca4a92aa1a8a/FLAG2ad18a0d9 [2022-11-16 12:25:37,030 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:25:37,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-11-16 12:25:37,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/data/fb2f60e26/97675db8f62f41e78a00ca4a92aa1a8a/FLAG2ad18a0d9 [2022-11-16 12:25:37,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/data/fb2f60e26/97675db8f62f41e78a00ca4a92aa1a8a [2022-11-16 12:25:37,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:25:37,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:25:37,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:25:37,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:25:37,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:25:37,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603a1839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37, skipping insertion in model container [2022-11-16 12:25:37,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:25:37,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:25:37,641 WARN L229 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_f5a2af9a-d792-4806-9989-24d70c7a10d8/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-11-16 12:25:37,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:25:37,661 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:25:37,685 WARN L229 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_f5a2af9a-d792-4806-9989-24d70c7a10d8/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-11-16 12:25:37,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:25:37,703 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:25:37,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37 WrapperNode [2022-11-16 12:25:37,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:25:37,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:25:37,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:25:37,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:25:37,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,754 INFO L138 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 204 [2022-11-16 12:25:37,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:25:37,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:25:37,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:25:37,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:25:37,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:25:37,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:25:37,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:25:37,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:25:37,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (1/1) ... [2022-11-16 12:25:37,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:25:37,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:25:37,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:25:37,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:25:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:25:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:25:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:25:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:25:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:25:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:25:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:25:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:25:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:25:37,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:25:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:25:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:25:37,892 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:25:38,003 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:25:38,005 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:25:38,576 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:25:38,589 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:25:38,589 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:25:38,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:25:38 BoogieIcfgContainer [2022-11-16 12:25:38,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:25:38,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:25:38,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:25:38,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:25:38,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:25:37" (1/3) ... [2022-11-16 12:25:38,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4874e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:25:38, skipping insertion in model container [2022-11-16 12:25:38,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:25:37" (2/3) ... [2022-11-16 12:25:38,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4874e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:25:38, skipping insertion in model container [2022-11-16 12:25:38,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:25:38" (3/3) ... [2022-11-16 12:25:38,602 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2022-11-16 12:25:38,611 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:25:38,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:25:38,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-16 12:25:38,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:25:38,887 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:25:38,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 287 places, 299 transitions, 614 flow [2022-11-16 12:25:39,141 INFO L130 PetriNetUnfolder]: 19/297 cut-off events. [2022-11-16 12:25:39,142 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:25:39,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 297 events. 19/297 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 418 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2022-11-16 12:25:39,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 287 places, 299 transitions, 614 flow [2022-11-16 12:25:39,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 262 transitions, 533 flow [2022-11-16 12:25:39,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:25:39,207 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;@723929a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:25:39,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-11-16 12:25:39,228 INFO L130 PetriNetUnfolder]: 0/64 cut-off events. [2022-11-16 12:25:39,228 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:25:39,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:39,229 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] [2022-11-16 12:25:39,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:39,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1964531808, now seen corresponding path program 1 times [2022-11-16 12:25:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:39,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689896235] [2022-11-16 12:25:39,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:39,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:39,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:39,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689896235] [2022-11-16 12:25:39,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689896235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:39,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:39,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:39,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151680371] [2022-11-16 12:25:39,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:39,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:39,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:39,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:39,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:39,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 262 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:39,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:39,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:39,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:40,359 INFO L130 PetriNetUnfolder]: 119/1131 cut-off events. [2022-11-16 12:25:40,359 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-11-16 12:25:40,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 1131 events. 119/1131 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7309 event pairs, 15 based on Foata normal form. 142/1064 useless extension candidates. Maximal degree in co-relation 1374. Up to 81 conditions per place. [2022-11-16 12:25:40,389 INFO L137 encePairwiseOnDemand]: 281/299 looper letters, 51 selfloop transitions, 9 changer transitions 0/265 dead transitions. [2022-11-16 12:25:40,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 265 transitions, 671 flow [2022-11-16 12:25:40,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:25:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:25:40,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1741 transitions. [2022-11-16 12:25:40,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.831820353559484 [2022-11-16 12:25:40,419 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1741 transitions. [2022-11-16 12:25:40,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1741 transitions. [2022-11-16 12:25:40,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:40,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1741 transitions. [2022-11-16 12:25:40,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 248.71428571428572) internal successors, (1741), 7 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:40,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:40,453 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:40,455 INFO L175 Difference]: Start difference. First operand has 253 places, 262 transitions, 533 flow. Second operand 7 states and 1741 transitions. [2022-11-16 12:25:40,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 265 transitions, 671 flow [2022-11-16 12:25:40,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 265 transitions, 661 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:25:40,470 INFO L231 Difference]: Finished difference. Result has 255 places, 253 transitions, 528 flow [2022-11-16 12:25:40,472 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=528, PETRI_PLACES=255, PETRI_TRANSITIONS=253} [2022-11-16 12:25:40,478 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 2 predicate places. [2022-11-16 12:25:40,479 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 253 transitions, 528 flow [2022-11-16 12:25:40,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:40,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:40,480 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] [2022-11-16 12:25:40,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:25:40,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:40,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash 770944624, now seen corresponding path program 1 times [2022-11-16 12:25:40,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:40,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685625088] [2022-11-16 12:25:40,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:40,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:40,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:40,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685625088] [2022-11-16 12:25:40,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685625088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:40,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:40,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:25:40,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777112322] [2022-11-16 12:25:40,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:40,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:25:40,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:40,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:25:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:25:40,673 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:40,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 253 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:40,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:40,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:40,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:40,946 INFO L130 PetriNetUnfolder]: 75/589 cut-off events. [2022-11-16 12:25:40,946 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-16 12:25:40,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 589 events. 75/589 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2944 event pairs, 30 based on Foata normal form. 4/514 useless extension candidates. Maximal degree in co-relation 372. Up to 99 conditions per place. [2022-11-16 12:25:40,955 INFO L137 encePairwiseOnDemand]: 286/299 looper letters, 59 selfloop transitions, 9 changer transitions 0/273 dead transitions. [2022-11-16 12:25:40,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 273 transitions, 709 flow [2022-11-16 12:25:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:25:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:25:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1020 transitions. [2022-11-16 12:25:40,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8528428093645485 [2022-11-16 12:25:40,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1020 transitions. [2022-11-16 12:25:40,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1020 transitions. [2022-11-16 12:25:40,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:40,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1020 transitions. [2022-11-16 12:25:40,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:40,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:40,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:40,968 INFO L175 Difference]: Start difference. First operand has 255 places, 253 transitions, 528 flow. Second operand 4 states and 1020 transitions. [2022-11-16 12:25:40,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 273 transitions, 709 flow [2022-11-16 12:25:40,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 273 transitions, 691 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:25:40,982 INFO L231 Difference]: Finished difference. Result has 253 places, 256 transitions, 566 flow [2022-11-16 12:25:40,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=566, PETRI_PLACES=253, PETRI_TRANSITIONS=256} [2022-11-16 12:25:40,984 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 0 predicate places. [2022-11-16 12:25:40,984 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 256 transitions, 566 flow [2022-11-16 12:25:40,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:40,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:40,985 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] [2022-11-16 12:25:40,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:25:40,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:40,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:40,987 INFO L85 PathProgramCache]: Analyzing trace with hash -306281460, now seen corresponding path program 1 times [2022-11-16 12:25:40,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:40,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558440166] [2022-11-16 12:25:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:40,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:41,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:41,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558440166] [2022-11-16 12:25:41,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558440166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:41,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:41,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:41,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440865404] [2022-11-16 12:25:41,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:41,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:41,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:41,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:41,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:41,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:41,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 256 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:41,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:41,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:41,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:41,572 INFO L130 PetriNetUnfolder]: 189/1081 cut-off events. [2022-11-16 12:25:41,572 INFO L131 PetriNetUnfolder]: For 95/97 co-relation queries the response was YES. [2022-11-16 12:25:41,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 1081 events. 189/1081 cut-off events. For 95/97 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8892 event pairs, 30 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 1334. Up to 145 conditions per place. [2022-11-16 12:25:41,585 INFO L137 encePairwiseOnDemand]: 289/299 looper letters, 50 selfloop transitions, 9 changer transitions 0/266 dead transitions. [2022-11-16 12:25:41,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 266 transitions, 707 flow [2022-11-16 12:25:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:25:41,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:25:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1719 transitions. [2022-11-16 12:25:41,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8213091256569517 [2022-11-16 12:25:41,591 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1719 transitions. [2022-11-16 12:25:41,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1719 transitions. [2022-11-16 12:25:41,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:41,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1719 transitions. [2022-11-16 12:25:41,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.57142857142858) internal successors, (1719), 7 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:41,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:41,604 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:41,604 INFO L175 Difference]: Start difference. First operand has 253 places, 256 transitions, 566 flow. Second operand 7 states and 1719 transitions. [2022-11-16 12:25:41,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 266 transitions, 707 flow [2022-11-16 12:25:41,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 266 transitions, 707 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:25:41,611 INFO L231 Difference]: Finished difference. Result has 258 places, 255 transitions, 582 flow [2022-11-16 12:25:41,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=582, PETRI_PLACES=258, PETRI_TRANSITIONS=255} [2022-11-16 12:25:41,614 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 5 predicate places. [2022-11-16 12:25:41,615 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 255 transitions, 582 flow [2022-11-16 12:25:41,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:41,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:41,616 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] [2022-11-16 12:25:41,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:25:41,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:41,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:41,618 INFO L85 PathProgramCache]: Analyzing trace with hash -904789845, now seen corresponding path program 1 times [2022-11-16 12:25:41,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:41,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031009694] [2022-11-16 12:25:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:41,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:41,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:41,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031009694] [2022-11-16 12:25:41,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031009694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:41,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:41,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:25:41,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778042220] [2022-11-16 12:25:41,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:41,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:25:41,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:41,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:25:41,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:25:41,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:41,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 255 transitions, 582 flow. Second operand has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:41,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:41,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:41,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:42,092 INFO L130 PetriNetUnfolder]: 143/894 cut-off events. [2022-11-16 12:25:42,093 INFO L131 PetriNetUnfolder]: For 150/152 co-relation queries the response was YES. [2022-11-16 12:25:42,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 894 events. 143/894 cut-off events. For 150/152 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6618 event pairs, 60 based on Foata normal form. 6/674 useless extension candidates. Maximal degree in co-relation 1217. Up to 161 conditions per place. [2022-11-16 12:25:42,103 INFO L137 encePairwiseOnDemand]: 286/299 looper letters, 58 selfloop transitions, 9 changer transitions 0/274 dead transitions. [2022-11-16 12:25:42,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 274 transitions, 756 flow [2022-11-16 12:25:42,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:25:42,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:25:42,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1019 transitions. [2022-11-16 12:25:42,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8520066889632107 [2022-11-16 12:25:42,106 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1019 transitions. [2022-11-16 12:25:42,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1019 transitions. [2022-11-16 12:25:42,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:42,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1019 transitions. [2022-11-16 12:25:42,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 254.75) internal successors, (1019), 4 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:42,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:42,113 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:42,114 INFO L175 Difference]: Start difference. First operand has 258 places, 255 transitions, 582 flow. Second operand 4 states and 1019 transitions. [2022-11-16 12:25:42,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 274 transitions, 756 flow [2022-11-16 12:25:42,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 274 transitions, 738 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:25:42,120 INFO L231 Difference]: Finished difference. Result has 256 places, 258 transitions, 620 flow [2022-11-16 12:25:42,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=620, PETRI_PLACES=256, PETRI_TRANSITIONS=258} [2022-11-16 12:25:42,122 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 3 predicate places. [2022-11-16 12:25:42,122 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 258 transitions, 620 flow [2022-11-16 12:25:42,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:42,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:42,123 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] [2022-11-16 12:25:42,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:25:42,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1011005399, now seen corresponding path program 1 times [2022-11-16 12:25:42,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:42,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954970329] [2022-11-16 12:25:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:42,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:42,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:42,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954970329] [2022-11-16 12:25:42,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954970329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:42,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:42,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:25:42,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240477723] [2022-11-16 12:25:42,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:42,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:25:42,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:42,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:25:42,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:25:42,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:42,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 258 transitions, 620 flow. Second operand has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:42,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:42,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:42,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:42,471 INFO L130 PetriNetUnfolder]: 68/598 cut-off events. [2022-11-16 12:25:42,471 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-16 12:25:42,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 598 events. 68/598 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2979 event pairs, 24 based on Foata normal form. 4/532 useless extension candidates. Maximal degree in co-relation 819. Up to 78 conditions per place. [2022-11-16 12:25:42,481 INFO L137 encePairwiseOnDemand]: 290/299 looper letters, 59 selfloop transitions, 7 changer transitions 0/273 dead transitions. [2022-11-16 12:25:42,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 273 transitions, 779 flow [2022-11-16 12:25:42,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:25:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:25:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1016 transitions. [2022-11-16 12:25:42,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8494983277591973 [2022-11-16 12:25:42,484 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1016 transitions. [2022-11-16 12:25:42,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1016 transitions. [2022-11-16 12:25:42,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:42,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1016 transitions. [2022-11-16 12:25:42,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:42,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:42,491 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:42,491 INFO L175 Difference]: Start difference. First operand has 256 places, 258 transitions, 620 flow. Second operand 4 states and 1016 transitions. [2022-11-16 12:25:42,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 273 transitions, 779 flow [2022-11-16 12:25:42,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 273 transitions, 774 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:25:42,498 INFO L231 Difference]: Finished difference. Result has 258 places, 256 transitions, 617 flow [2022-11-16 12:25:42,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=617, PETRI_PLACES=258, PETRI_TRANSITIONS=256} [2022-11-16 12:25:42,499 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 5 predicate places. [2022-11-16 12:25:42,499 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 256 transitions, 617 flow [2022-11-16 12:25:42,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.25) internal successors, (957), 4 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:42,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:42,500 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] [2022-11-16 12:25:42,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:25:42,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:42,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1276397034, now seen corresponding path program 1 times [2022-11-16 12:25:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:42,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531655603] [2022-11-16 12:25:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:42,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:42,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531655603] [2022-11-16 12:25:42,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531655603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:42,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:42,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165166340] [2022-11-16 12:25:42,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:42,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:42,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:42,627 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:42,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 256 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:42,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:42,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:42,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:43,107 INFO L130 PetriNetUnfolder]: 185/1815 cut-off events. [2022-11-16 12:25:43,107 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-11-16 12:25:43,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 1815 events. 185/1815 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14462 event pairs, 47 based on Foata normal form. 0/1520 useless extension candidates. Maximal degree in co-relation 1837. Up to 174 conditions per place. [2022-11-16 12:25:43,125 INFO L137 encePairwiseOnDemand]: 289/299 looper letters, 42 selfloop transitions, 10 changer transitions 0/261 dead transitions. [2022-11-16 12:25:43,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 261 transitions, 737 flow [2022-11-16 12:25:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:25:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:25:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1711 transitions. [2022-11-16 12:25:43,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8174868609651218 [2022-11-16 12:25:43,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1711 transitions. [2022-11-16 12:25:43,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1711 transitions. [2022-11-16 12:25:43,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:43,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1711 transitions. [2022-11-16 12:25:43,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.42857142857142) internal successors, (1711), 7 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,140 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,140 INFO L175 Difference]: Start difference. First operand has 258 places, 256 transitions, 617 flow. Second operand 7 states and 1711 transitions. [2022-11-16 12:25:43,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 261 transitions, 737 flow [2022-11-16 12:25:43,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 261 transitions, 726 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:25:43,159 INFO L231 Difference]: Finished difference. Result has 261 places, 255 transitions, 624 flow [2022-11-16 12:25:43,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=624, PETRI_PLACES=261, PETRI_TRANSITIONS=255} [2022-11-16 12:25:43,162 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 8 predicate places. [2022-11-16 12:25:43,162 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 255 transitions, 624 flow [2022-11-16 12:25:43,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:43,164 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:43,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:25:43,164 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash -867745107, now seen corresponding path program 1 times [2022-11-16 12:25:43,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:43,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372318086] [2022-11-16 12:25:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:43,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:43,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:43,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372318086] [2022-11-16 12:25:43,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372318086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:43,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:43,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:43,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157671474] [2022-11-16 12:25:43,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:43,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:25:43,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:43,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:25:43,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:25:43,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 299 [2022-11-16 12:25:43,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 255 transitions, 624 flow. Second operand has 5 states, 5 states have (on average 231.6) internal successors, (1158), 5 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:43,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 299 [2022-11-16 12:25:43,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:43,554 INFO L130 PetriNetUnfolder]: 83/635 cut-off events. [2022-11-16 12:25:43,554 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-16 12:25:43,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 635 events. 83/635 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3397 event pairs, 31 based on Foata normal form. 0/569 useless extension candidates. Maximal degree in co-relation 941. Up to 103 conditions per place. [2022-11-16 12:25:43,565 INFO L137 encePairwiseOnDemand]: 284/299 looper letters, 68 selfloop transitions, 15 changer transitions 0/282 dead transitions. [2022-11-16 12:25:43,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 282 transitions, 847 flow [2022-11-16 12:25:43,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:25:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:25:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1459 transitions. [2022-11-16 12:25:43,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8132664437012264 [2022-11-16 12:25:43,570 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1459 transitions. [2022-11-16 12:25:43,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1459 transitions. [2022-11-16 12:25:43,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:43,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1459 transitions. [2022-11-16 12:25:43,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,581 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,581 INFO L175 Difference]: Start difference. First operand has 261 places, 255 transitions, 624 flow. Second operand 6 states and 1459 transitions. [2022-11-16 12:25:43,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 282 transitions, 847 flow [2022-11-16 12:25:43,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 282 transitions, 820 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-11-16 12:25:43,589 INFO L231 Difference]: Finished difference. Result has 260 places, 261 transitions, 669 flow [2022-11-16 12:25:43,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=669, PETRI_PLACES=260, PETRI_TRANSITIONS=261} [2022-11-16 12:25:43,590 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 7 predicate places. [2022-11-16 12:25:43,590 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 261 transitions, 669 flow [2022-11-16 12:25:43,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 231.6) internal successors, (1158), 5 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,591 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:43,591 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] [2022-11-16 12:25:43,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:25:43,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:43,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:43,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1148288366, now seen corresponding path program 1 times [2022-11-16 12:25:43,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:43,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193907076] [2022-11-16 12:25:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:43,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:43,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:43,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193907076] [2022-11-16 12:25:43,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193907076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:43,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:43,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:25:43,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793181904] [2022-11-16 12:25:43,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:43,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:25:43,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:43,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:25:43,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:25:43,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:43,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 261 transitions, 669 flow. Second operand has 4 states, 4 states have (on average 239.5) internal successors, (958), 4 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:43,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:43,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:43,949 INFO L130 PetriNetUnfolder]: 126/826 cut-off events. [2022-11-16 12:25:43,949 INFO L131 PetriNetUnfolder]: For 214/216 co-relation queries the response was YES. [2022-11-16 12:25:43,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 826 events. 126/826 cut-off events. For 214/216 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5839 event pairs, 20 based on Foata normal form. 6/636 useless extension candidates. Maximal degree in co-relation 1181. Up to 128 conditions per place. [2022-11-16 12:25:43,958 INFO L137 encePairwiseOnDemand]: 290/299 looper letters, 58 selfloop transitions, 7 changer transitions 0/275 dead transitions. [2022-11-16 12:25:43,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 275 transitions, 821 flow [2022-11-16 12:25:43,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:25:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:25:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1015 transitions. [2022-11-16 12:25:43,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8486622073578596 [2022-11-16 12:25:43,961 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1015 transitions. [2022-11-16 12:25:43,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1015 transitions. [2022-11-16 12:25:43,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:43,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1015 transitions. [2022-11-16 12:25:43,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 253.75) internal successors, (1015), 4 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,967 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 299.0) internal successors, (1495), 5 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,967 INFO L175 Difference]: Start difference. First operand has 260 places, 261 transitions, 669 flow. Second operand 4 states and 1015 transitions. [2022-11-16 12:25:43,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 275 transitions, 821 flow [2022-11-16 12:25:43,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 275 transitions, 802 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-16 12:25:43,973 INFO L231 Difference]: Finished difference. Result has 259 places, 259 transitions, 652 flow [2022-11-16 12:25:43,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=652, PETRI_PLACES=259, PETRI_TRANSITIONS=259} [2022-11-16 12:25:43,975 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 6 predicate places. [2022-11-16 12:25:43,975 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 259 transitions, 652 flow [2022-11-16 12:25:43,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.5) internal successors, (958), 4 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:43,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:43,976 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] [2022-11-16 12:25:43,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:25:43,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:43,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1659081777, now seen corresponding path program 1 times [2022-11-16 12:25:43,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:43,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924537515] [2022-11-16 12:25:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:43,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:44,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924537515] [2022-11-16 12:25:44,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924537515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:44,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:44,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:25:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123313052] [2022-11-16 12:25:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:44,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:25:44,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:44,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:25:44,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:25:44,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-16 12:25:44,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 259 transitions, 652 flow. Second operand has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:44,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:44,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-16 12:25:44,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:44,637 INFO L130 PetriNetUnfolder]: 225/1681 cut-off events. [2022-11-16 12:25:44,637 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2022-11-16 12:25:44,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 1681 events. 225/1681 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 14195 event pairs, 58 based on Foata normal form. 0/1410 useless extension candidates. Maximal degree in co-relation 1818. Up to 141 conditions per place. [2022-11-16 12:25:44,654 INFO L137 encePairwiseOnDemand]: 284/299 looper letters, 62 selfloop transitions, 17 changer transitions 0/276 dead transitions. [2022-11-16 12:25:44,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 276 transitions, 858 flow [2022-11-16 12:25:44,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:25:44,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:25:44,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2570 transitions. [2022-11-16 12:25:44,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7813925205229553 [2022-11-16 12:25:44,661 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2570 transitions. [2022-11-16 12:25:44,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2570 transitions. [2022-11-16 12:25:44,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:44,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2570 transitions. [2022-11-16 12:25:44,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.63636363636363) internal successors, (2570), 11 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:44,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:44,686 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:44,686 INFO L175 Difference]: Start difference. First operand has 259 places, 259 transitions, 652 flow. Second operand 11 states and 2570 transitions. [2022-11-16 12:25:44,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 276 transitions, 858 flow [2022-11-16 12:25:44,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 276 transitions, 847 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:25:44,703 INFO L231 Difference]: Finished difference. Result has 269 places, 260 transitions, 690 flow [2022-11-16 12:25:44,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=690, PETRI_PLACES=269, PETRI_TRANSITIONS=260} [2022-11-16 12:25:44,706 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 16 predicate places. [2022-11-16 12:25:44,706 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 260 transitions, 690 flow [2022-11-16 12:25:44,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:44,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:44,708 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] [2022-11-16 12:25:44,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:25:44,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1237200138, now seen corresponding path program 1 times [2022-11-16 12:25:44,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:44,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978611054] [2022-11-16 12:25:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:44,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:44,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978611054] [2022-11-16 12:25:44,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978611054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:44,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:44,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:44,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013210518] [2022-11-16 12:25:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:44,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:44,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:44,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:44,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:44,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:44,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 260 transitions, 690 flow. Second operand has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:44,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:44,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:44,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:45,182 INFO L130 PetriNetUnfolder]: 211/1313 cut-off events. [2022-11-16 12:25:45,182 INFO L131 PetriNetUnfolder]: For 290/349 co-relation queries the response was YES. [2022-11-16 12:25:45,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 1313 events. 211/1313 cut-off events. For 290/349 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11385 event pairs, 46 based on Foata normal form. 0/1058 useless extension candidates. Maximal degree in co-relation 1938. Up to 214 conditions per place. [2022-11-16 12:25:45,197 INFO L137 encePairwiseOnDemand]: 289/299 looper letters, 42 selfloop transitions, 10 changer transitions 0/265 dead transitions. [2022-11-16 12:25:45,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 265 transitions, 816 flow [2022-11-16 12:25:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:25:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:25:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1711 transitions. [2022-11-16 12:25:45,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8174868609651218 [2022-11-16 12:25:45,207 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1711 transitions. [2022-11-16 12:25:45,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1711 transitions. [2022-11-16 12:25:45,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:45,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1711 transitions. [2022-11-16 12:25:45,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.42857142857142) internal successors, (1711), 7 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:45,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:45,216 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:45,217 INFO L175 Difference]: Start difference. First operand has 269 places, 260 transitions, 690 flow. Second operand 7 states and 1711 transitions. [2022-11-16 12:25:45,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 265 transitions, 816 flow [2022-11-16 12:25:45,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 265 transitions, 787 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 12:25:45,223 INFO L231 Difference]: Finished difference. Result has 268 places, 259 transitions, 685 flow [2022-11-16 12:25:45,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=685, PETRI_PLACES=268, PETRI_TRANSITIONS=259} [2022-11-16 12:25:45,225 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 15 predicate places. [2022-11-16 12:25:45,226 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 259 transitions, 685 flow [2022-11-16 12:25:45,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:45,227 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:45,227 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] [2022-11-16 12:25:45,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:25:45,227 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:45,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:45,228 INFO L85 PathProgramCache]: Analyzing trace with hash 108073214, now seen corresponding path program 1 times [2022-11-16 12:25:45,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:45,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025387297] [2022-11-16 12:25:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:45,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:45,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:45,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025387297] [2022-11-16 12:25:45,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025387297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:45,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:45,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:25:45,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740376770] [2022-11-16 12:25:45,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:45,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:25:45,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:25:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:25:45,377 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-16 12:25:45,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 259 transitions, 685 flow. Second operand has 8 states, 8 states have (on average 229.125) internal successors, (1833), 8 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:45,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:45,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-16 12:25:45,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:45,830 INFO L130 PetriNetUnfolder]: 196/1093 cut-off events. [2022-11-16 12:25:45,831 INFO L131 PetriNetUnfolder]: For 267/267 co-relation queries the response was YES. [2022-11-16 12:25:45,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 1093 events. 196/1093 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8962 event pairs, 54 based on Foata normal form. 0/924 useless extension candidates. Maximal degree in co-relation 1439. Up to 137 conditions per place. [2022-11-16 12:25:45,843 INFO L137 encePairwiseOnDemand]: 283/299 looper letters, 61 selfloop transitions, 16 changer transitions 0/277 dead transitions. [2022-11-16 12:25:45,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 277 transitions, 905 flow [2022-11-16 12:25:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:25:45,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:25:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2572 transitions. [2022-11-16 12:25:45,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7820006080875647 [2022-11-16 12:25:45,850 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2572 transitions. [2022-11-16 12:25:45,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2572 transitions. [2022-11-16 12:25:45,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:45,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2572 transitions. [2022-11-16 12:25:45,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.8181818181818) internal successors, (2572), 11 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:45,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:45,862 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:45,862 INFO L175 Difference]: Start difference. First operand has 268 places, 259 transitions, 685 flow. Second operand 11 states and 2572 transitions. [2022-11-16 12:25:45,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 277 transitions, 905 flow [2022-11-16 12:25:45,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 277 transitions, 871 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:25:45,870 INFO L231 Difference]: Finished difference. Result has 274 places, 260 transitions, 710 flow [2022-11-16 12:25:45,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=710, PETRI_PLACES=274, PETRI_TRANSITIONS=260} [2022-11-16 12:25:45,871 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 21 predicate places. [2022-11-16 12:25:45,871 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 260 transitions, 710 flow [2022-11-16 12:25:45,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 229.125) internal successors, (1833), 8 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:45,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:45,872 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] [2022-11-16 12:25:45,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:25:45,873 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1631963545, now seen corresponding path program 1 times [2022-11-16 12:25:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:45,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455095451] [2022-11-16 12:25:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:45,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:45,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455095451] [2022-11-16 12:25:45,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455095451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:45,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:45,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:45,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597033087] [2022-11-16 12:25:45,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:45,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:25:45,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:45,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:25:45,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:25:45,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 299 [2022-11-16 12:25:45,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 260 transitions, 710 flow. Second operand has 5 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:45,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:45,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 299 [2022-11-16 12:25:45,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:46,286 INFO L130 PetriNetUnfolder]: 156/894 cut-off events. [2022-11-16 12:25:46,286 INFO L131 PetriNetUnfolder]: For 227/229 co-relation queries the response was YES. [2022-11-16 12:25:46,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 894 events. 156/894 cut-off events. For 227/229 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6744 event pairs, 36 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 1345. Up to 169 conditions per place. [2022-11-16 12:25:46,296 INFO L137 encePairwiseOnDemand]: 284/299 looper letters, 67 selfloop transitions, 15 changer transitions 0/286 dead transitions. [2022-11-16 12:25:46,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 286 transitions, 926 flow [2022-11-16 12:25:46,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:25:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:25:46,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1458 transitions. [2022-11-16 12:25:46,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8127090301003345 [2022-11-16 12:25:46,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1458 transitions. [2022-11-16 12:25:46,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1458 transitions. [2022-11-16 12:25:46,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:46,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1458 transitions. [2022-11-16 12:25:46,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:46,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:46,308 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:46,309 INFO L175 Difference]: Start difference. First operand has 274 places, 260 transitions, 710 flow. Second operand 6 states and 1458 transitions. [2022-11-16 12:25:46,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 286 transitions, 926 flow [2022-11-16 12:25:46,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 286 transitions, 894 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-16 12:25:46,315 INFO L231 Difference]: Finished difference. Result has 273 places, 266 transitions, 752 flow [2022-11-16 12:25:46,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=273, PETRI_TRANSITIONS=266} [2022-11-16 12:25:46,317 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 20 predicate places. [2022-11-16 12:25:46,317 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 266 transitions, 752 flow [2022-11-16 12:25:46,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 231.8) internal successors, (1159), 5 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:46,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:46,318 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] [2022-11-16 12:25:46,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:25:46,318 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:46,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:46,319 INFO L85 PathProgramCache]: Analyzing trace with hash 552114978, now seen corresponding path program 1 times [2022-11-16 12:25:46,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:46,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904693497] [2022-11-16 12:25:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:46,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:46,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:46,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904693497] [2022-11-16 12:25:46,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904693497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:46,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:46,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:46,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637769914] [2022-11-16 12:25:46,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:46,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:46,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:46,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:46,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:46,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 299 [2022-11-16 12:25:46,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 266 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:46,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:46,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 299 [2022-11-16 12:25:46,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:46,804 INFO L130 PetriNetUnfolder]: 114/675 cut-off events. [2022-11-16 12:25:46,804 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-11-16 12:25:46,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 675 events. 114/675 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3873 event pairs, 61 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 1304. Up to 188 conditions per place. [2022-11-16 12:25:46,814 INFO L137 encePairwiseOnDemand]: 282/299 looper letters, 73 selfloop transitions, 16 changer transitions 0/281 dead transitions. [2022-11-16 12:25:46,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 281 transitions, 969 flow [2022-11-16 12:25:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:25:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:25:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1602 transitions. [2022-11-16 12:25:46,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7654085045389393 [2022-11-16 12:25:46,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1602 transitions. [2022-11-16 12:25:46,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1602 transitions. [2022-11-16 12:25:46,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:46,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1602 transitions. [2022-11-16 12:25:46,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.85714285714286) internal successors, (1602), 7 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:46,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:46,827 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:46,827 INFO L175 Difference]: Start difference. First operand has 273 places, 266 transitions, 752 flow. Second operand 7 states and 1602 transitions. [2022-11-16 12:25:46,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 281 transitions, 969 flow [2022-11-16 12:25:46,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 281 transitions, 951 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-16 12:25:46,834 INFO L231 Difference]: Finished difference. Result has 279 places, 274 transitions, 829 flow [2022-11-16 12:25:46,835 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=829, PETRI_PLACES=279, PETRI_TRANSITIONS=274} [2022-11-16 12:25:46,835 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 26 predicate places. [2022-11-16 12:25:46,836 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 274 transitions, 829 flow [2022-11-16 12:25:46,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:46,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:46,837 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] [2022-11-16 12:25:46,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:25:46,837 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:46,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash 662726100, now seen corresponding path program 1 times [2022-11-16 12:25:46,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:46,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396559720] [2022-11-16 12:25:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:46,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:46,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:46,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396559720] [2022-11-16 12:25:46,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396559720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:46,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:46,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:46,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380368119] [2022-11-16 12:25:46,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:46,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:46,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:46,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:46,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:46,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 299 [2022-11-16 12:25:46,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 274 transitions, 829 flow. Second operand has 6 states, 6 states have (on average 220.5) internal successors, (1323), 6 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:46,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:46,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 299 [2022-11-16 12:25:46,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:47,304 INFO L130 PetriNetUnfolder]: 108/665 cut-off events. [2022-11-16 12:25:47,305 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2022-11-16 12:25:47,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 665 events. 108/665 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3769 event pairs, 48 based on Foata normal form. 2/639 useless extension candidates. Maximal degree in co-relation 1375. Up to 153 conditions per place. [2022-11-16 12:25:47,315 INFO L137 encePairwiseOnDemand]: 281/299 looper letters, 87 selfloop transitions, 19 changer transitions 0/302 dead transitions. [2022-11-16 12:25:47,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 302 transitions, 1144 flow [2022-11-16 12:25:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:25:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:25:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1616 transitions. [2022-11-16 12:25:47,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7720974677496416 [2022-11-16 12:25:47,320 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1616 transitions. [2022-11-16 12:25:47,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1616 transitions. [2022-11-16 12:25:47,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:47,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1616 transitions. [2022-11-16 12:25:47,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.85714285714286) internal successors, (1616), 7 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:47,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:47,328 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:47,328 INFO L175 Difference]: Start difference. First operand has 279 places, 274 transitions, 829 flow. Second operand 7 states and 1616 transitions. [2022-11-16 12:25:47,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 302 transitions, 1144 flow [2022-11-16 12:25:47,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 302 transitions, 1133 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:25:47,336 INFO L231 Difference]: Finished difference. Result has 287 places, 285 transitions, 952 flow [2022-11-16 12:25:47,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=952, PETRI_PLACES=287, PETRI_TRANSITIONS=285} [2022-11-16 12:25:47,337 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 34 predicate places. [2022-11-16 12:25:47,337 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 285 transitions, 952 flow [2022-11-16 12:25:47,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.5) internal successors, (1323), 6 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:47,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:47,338 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] [2022-11-16 12:25:47,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:25:47,339 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:47,339 INFO L85 PathProgramCache]: Analyzing trace with hash -258605445, now seen corresponding path program 1 times [2022-11-16 12:25:47,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:47,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537654970] [2022-11-16 12:25:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:47,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:47,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537654970] [2022-11-16 12:25:47,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537654970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:47,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:47,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:25:47,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581553477] [2022-11-16 12:25:47,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:47,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:25:47,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:47,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:25:47,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:25:47,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-16 12:25:47,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 285 transitions, 952 flow. Second operand has 8 states, 8 states have (on average 229.125) internal successors, (1833), 8 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:47,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:47,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-16 12:25:47,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:48,061 INFO L130 PetriNetUnfolder]: 282/1452 cut-off events. [2022-11-16 12:25:48,061 INFO L131 PetriNetUnfolder]: For 409/411 co-relation queries the response was YES. [2022-11-16 12:25:48,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2553 conditions, 1452 events. 282/1452 cut-off events. For 409/411 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13661 event pairs, 64 based on Foata normal form. 0/1182 useless extension candidates. Maximal degree in co-relation 2230. Up to 185 conditions per place. [2022-11-16 12:25:48,077 INFO L137 encePairwiseOnDemand]: 284/299 looper letters, 62 selfloop transitions, 17 changer transitions 0/302 dead transitions. [2022-11-16 12:25:48,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 302 transitions, 1151 flow [2022-11-16 12:25:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:25:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:25:48,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2570 transitions. [2022-11-16 12:25:48,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7813925205229553 [2022-11-16 12:25:48,084 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2570 transitions. [2022-11-16 12:25:48,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2570 transitions. [2022-11-16 12:25:48,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:48,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2570 transitions. [2022-11-16 12:25:48,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.63636363636363) internal successors, (2570), 11 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:48,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:48,099 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:48,099 INFO L175 Difference]: Start difference. First operand has 287 places, 285 transitions, 952 flow. Second operand 11 states and 2570 transitions. [2022-11-16 12:25:48,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 302 transitions, 1151 flow [2022-11-16 12:25:48,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 302 transitions, 1144 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:25:48,108 INFO L231 Difference]: Finished difference. Result has 298 places, 286 transitions, 994 flow [2022-11-16 12:25:48,109 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=994, PETRI_PLACES=298, PETRI_TRANSITIONS=286} [2022-11-16 12:25:48,109 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 45 predicate places. [2022-11-16 12:25:48,110 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 286 transitions, 994 flow [2022-11-16 12:25:48,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 229.125) internal successors, (1833), 8 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:48,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:48,111 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] [2022-11-16 12:25:48,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:25:48,111 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:48,112 INFO L85 PathProgramCache]: Analyzing trace with hash 573166649, now seen corresponding path program 1 times [2022-11-16 12:25:48,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:48,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720596285] [2022-11-16 12:25:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:48,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:48,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720596285] [2022-11-16 12:25:48,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720596285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:48,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:48,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:25:48,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528669527] [2022-11-16 12:25:48,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:48,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:25:48,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:48,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:25:48,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:25:48,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-16 12:25:48,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 286 transitions, 994 flow. Second operand has 8 states, 8 states have (on average 229.25) internal successors, (1834), 8 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:48,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:48,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-16 12:25:48,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:48,837 INFO L130 PetriNetUnfolder]: 260/1515 cut-off events. [2022-11-16 12:25:48,837 INFO L131 PetriNetUnfolder]: For 514/516 co-relation queries the response was YES. [2022-11-16 12:25:48,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2761 conditions, 1515 events. 260/1515 cut-off events. For 514/516 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13851 event pairs, 66 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 2459. Up to 180 conditions per place. [2022-11-16 12:25:48,855 INFO L137 encePairwiseOnDemand]: 283/299 looper letters, 61 selfloop transitions, 16 changer transitions 0/304 dead transitions. [2022-11-16 12:25:48,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 304 transitions, 1193 flow [2022-11-16 12:25:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:25:48,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:25:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2572 transitions. [2022-11-16 12:25:48,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7820006080875647 [2022-11-16 12:25:48,863 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2572 transitions. [2022-11-16 12:25:48,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2572 transitions. [2022-11-16 12:25:48,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:48,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2572 transitions. [2022-11-16 12:25:48,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.8181818181818) internal successors, (2572), 11 states have internal predecessors, (2572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:48,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:48,880 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:48,881 INFO L175 Difference]: Start difference. First operand has 298 places, 286 transitions, 994 flow. Second operand 11 states and 2572 transitions. [2022-11-16 12:25:48,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 304 transitions, 1193 flow [2022-11-16 12:25:48,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 304 transitions, 1170 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 12:25:48,892 INFO L231 Difference]: Finished difference. Result has 304 places, 287 transitions, 1016 flow [2022-11-16 12:25:48,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1016, PETRI_PLACES=304, PETRI_TRANSITIONS=287} [2022-11-16 12:25:48,894 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 51 predicate places. [2022-11-16 12:25:48,896 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 287 transitions, 1016 flow [2022-11-16 12:25:48,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 229.25) internal successors, (1834), 8 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:48,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:48,898 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] [2022-11-16 12:25:48,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:25:48,898 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:48,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:48,899 INFO L85 PathProgramCache]: Analyzing trace with hash 830310525, now seen corresponding path program 1 times [2022-11-16 12:25:48,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:48,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288267987] [2022-11-16 12:25:48,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:48,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:49,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:49,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288267987] [2022-11-16 12:25:49,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288267987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:49,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:49,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:49,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92023300] [2022-11-16 12:25:49,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:49,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:49,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:49,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:49,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 299 [2022-11-16 12:25:49,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 287 transitions, 1016 flow. Second operand has 6 states, 6 states have (on average 220.5) internal successors, (1323), 6 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:49,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:49,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 299 [2022-11-16 12:25:49,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:49,534 INFO L130 PetriNetUnfolder]: 222/959 cut-off events. [2022-11-16 12:25:49,534 INFO L131 PetriNetUnfolder]: For 471/473 co-relation queries the response was YES. [2022-11-16 12:25:49,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1919 conditions, 959 events. 222/959 cut-off events. For 471/473 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 7914 event pairs, 96 based on Foata normal form. 6/730 useless extension candidates. Maximal degree in co-relation 1834. Up to 313 conditions per place. [2022-11-16 12:25:49,547 INFO L137 encePairwiseOnDemand]: 282/299 looper letters, 72 selfloop transitions, 16 changer transitions 1/302 dead transitions. [2022-11-16 12:25:49,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 302 transitions, 1228 flow [2022-11-16 12:25:49,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:25:49,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:25:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1602 transitions. [2022-11-16 12:25:49,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7654085045389393 [2022-11-16 12:25:49,551 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1602 transitions. [2022-11-16 12:25:49,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1602 transitions. [2022-11-16 12:25:49,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:49,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1602 transitions. [2022-11-16 12:25:49,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.85714285714286) internal successors, (1602), 7 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:49,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:49,562 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:49,562 INFO L175 Difference]: Start difference. First operand has 304 places, 287 transitions, 1016 flow. Second operand 7 states and 1602 transitions. [2022-11-16 12:25:49,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 302 transitions, 1228 flow [2022-11-16 12:25:49,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 302 transitions, 1201 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-16 12:25:49,572 INFO L231 Difference]: Finished difference. Result has 307 places, 295 transitions, 1084 flow [2022-11-16 12:25:49,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1084, PETRI_PLACES=307, PETRI_TRANSITIONS=295} [2022-11-16 12:25:49,573 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 54 predicate places. [2022-11-16 12:25:49,573 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 295 transitions, 1084 flow [2022-11-16 12:25:49,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.5) internal successors, (1323), 6 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:49,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:49,574 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] [2022-11-16 12:25:49,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:25:49,574 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:49,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash 696853568, now seen corresponding path program 1 times [2022-11-16 12:25:49,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:49,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814206046] [2022-11-16 12:25:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:49,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:49,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:49,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814206046] [2022-11-16 12:25:49,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814206046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:49,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:49,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:49,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470799481] [2022-11-16 12:25:49,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:49,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:49,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:49,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:49,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:49,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 299 [2022-11-16 12:25:49,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 295 transitions, 1084 flow. Second operand has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:49,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:49,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 299 [2022-11-16 12:25:49,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:50,200 INFO L130 PetriNetUnfolder]: 210/959 cut-off events. [2022-11-16 12:25:50,200 INFO L131 PetriNetUnfolder]: For 535/537 co-relation queries the response was YES. [2022-11-16 12:25:50,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 959 events. 210/959 cut-off events. For 535/537 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 7678 event pairs, 110 based on Foata normal form. 3/765 useless extension candidates. Maximal degree in co-relation 1953. Up to 254 conditions per place. [2022-11-16 12:25:50,213 INFO L137 encePairwiseOnDemand]: 281/299 looper letters, 86 selfloop transitions, 19 changer transitions 1/323 dead transitions. [2022-11-16 12:25:50,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 323 transitions, 1394 flow [2022-11-16 12:25:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:25:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:25:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1616 transitions. [2022-11-16 12:25:50,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7720974677496416 [2022-11-16 12:25:50,218 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1616 transitions. [2022-11-16 12:25:50,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1616 transitions. [2022-11-16 12:25:50,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:50,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1616 transitions. [2022-11-16 12:25:50,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 230.85714285714286) internal successors, (1616), 7 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:50,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:50,229 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:50,230 INFO L175 Difference]: Start difference. First operand has 307 places, 295 transitions, 1084 flow. Second operand 7 states and 1616 transitions. [2022-11-16 12:25:50,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 323 transitions, 1394 flow [2022-11-16 12:25:50,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 323 transitions, 1383 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:25:50,241 INFO L231 Difference]: Finished difference. Result has 315 places, 306 transitions, 1207 flow [2022-11-16 12:25:50,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1207, PETRI_PLACES=315, PETRI_TRANSITIONS=306} [2022-11-16 12:25:50,242 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 62 predicate places. [2022-11-16 12:25:50,243 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 306 transitions, 1207 flow [2022-11-16 12:25:50,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:50,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:50,244 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] [2022-11-16 12:25:50,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:25:50,244 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:50,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:50,245 INFO L85 PathProgramCache]: Analyzing trace with hash 337832697, now seen corresponding path program 1 times [2022-11-16 12:25:50,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:50,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504253460] [2022-11-16 12:25:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:50,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:50,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:50,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504253460] [2022-11-16 12:25:50,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504253460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:50,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:50,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135717462] [2022-11-16 12:25:50,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:50,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:50,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:50,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:50,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:50,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:50,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 306 transitions, 1207 flow. Second operand has 6 states, 6 states have (on average 240.16666666666666) internal successors, (1441), 6 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:50,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:50,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:50,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:50,739 INFO L130 PetriNetUnfolder]: 104/861 cut-off events. [2022-11-16 12:25:50,739 INFO L131 PetriNetUnfolder]: For 439/439 co-relation queries the response was YES. [2022-11-16 12:25:50,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 861 events. 104/861 cut-off events. For 439/439 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4984 event pairs, 30 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 1738. Up to 114 conditions per place. [2022-11-16 12:25:50,754 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 50 selfloop transitions, 8 changer transitions 0/315 dead transitions. [2022-11-16 12:25:50,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 315 transitions, 1359 flow [2022-11-16 12:25:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:25:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:25:50,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1711 transitions. [2022-11-16 12:25:50,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8174868609651218 [2022-11-16 12:25:50,759 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1711 transitions. [2022-11-16 12:25:50,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1711 transitions. [2022-11-16 12:25:50,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:50,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1711 transitions. [2022-11-16 12:25:50,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.42857142857142) internal successors, (1711), 7 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:50,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:50,771 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:50,772 INFO L175 Difference]: Start difference. First operand has 315 places, 306 transitions, 1207 flow. Second operand 7 states and 1711 transitions. [2022-11-16 12:25:50,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 315 transitions, 1359 flow [2022-11-16 12:25:50,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 315 transitions, 1352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:25:50,787 INFO L231 Difference]: Finished difference. Result has 320 places, 307 transitions, 1230 flow [2022-11-16 12:25:50,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1230, PETRI_PLACES=320, PETRI_TRANSITIONS=307} [2022-11-16 12:25:50,788 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 67 predicate places. [2022-11-16 12:25:50,789 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 307 transitions, 1230 flow [2022-11-16 12:25:50,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.16666666666666) internal successors, (1441), 6 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:50,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:50,790 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:50,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:25:50,790 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash -474878811, now seen corresponding path program 1 times [2022-11-16 12:25:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:50,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278303533] [2022-11-16 12:25:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:50,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:50,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:50,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278303533] [2022-11-16 12:25:50,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278303533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:50,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:50,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:50,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218396302] [2022-11-16 12:25:50,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:50,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:50,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:50,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:50,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:50,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:50,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 307 transitions, 1230 flow. Second operand has 6 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:50,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:50,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:50,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:51,526 INFO L130 PetriNetUnfolder]: 163/1802 cut-off events. [2022-11-16 12:25:51,526 INFO L131 PetriNetUnfolder]: For 1021/1021 co-relation queries the response was YES. [2022-11-16 12:25:51,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3740 conditions, 1802 events. 163/1802 cut-off events. For 1021/1021 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13678 event pairs, 46 based on Foata normal form. 0/1714 useless extension candidates. Maximal degree in co-relation 3281. Up to 151 conditions per place. [2022-11-16 12:25:51,544 INFO L137 encePairwiseOnDemand]: 291/299 looper letters, 50 selfloop transitions, 8 changer transitions 0/316 dead transitions. [2022-11-16 12:25:51,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 316 transitions, 1379 flow [2022-11-16 12:25:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:25:51,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:25:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1711 transitions. [2022-11-16 12:25:51,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8174868609651218 [2022-11-16 12:25:51,551 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1711 transitions. [2022-11-16 12:25:51,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1711 transitions. [2022-11-16 12:25:51,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:51,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1711 transitions. [2022-11-16 12:25:51,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 244.42857142857142) internal successors, (1711), 7 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:51,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:51,560 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:51,560 INFO L175 Difference]: Start difference. First operand has 320 places, 307 transitions, 1230 flow. Second operand 7 states and 1711 transitions. [2022-11-16 12:25:51,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 316 transitions, 1379 flow [2022-11-16 12:25:51,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 316 transitions, 1373 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:25:51,576 INFO L231 Difference]: Finished difference. Result has 323 places, 308 transitions, 1254 flow [2022-11-16 12:25:51,576 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1254, PETRI_PLACES=323, PETRI_TRANSITIONS=308} [2022-11-16 12:25:51,577 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 70 predicate places. [2022-11-16 12:25:51,578 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 308 transitions, 1254 flow [2022-11-16 12:25:51,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:51,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:51,579 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:51,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:25:51,579 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:51,580 INFO L85 PathProgramCache]: Analyzing trace with hash 242984067, now seen corresponding path program 1 times [2022-11-16 12:25:51,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:51,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132809212] [2022-11-16 12:25:51,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:51,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:51,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:51,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:51,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132809212] [2022-11-16 12:25:51,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132809212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:51,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:51,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:51,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377905339] [2022-11-16 12:25:51,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:51,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:51,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:51,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:51,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:51,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:51,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 308 transitions, 1254 flow. Second operand has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:51,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:51,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:51,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:52,008 INFO L130 PetriNetUnfolder]: 102/866 cut-off events. [2022-11-16 12:25:52,008 INFO L131 PetriNetUnfolder]: For 492/492 co-relation queries the response was YES. [2022-11-16 12:25:52,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 866 events. 102/866 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5051 event pairs, 42 based on Foata normal form. 0/863 useless extension candidates. Maximal degree in co-relation 1743. Up to 111 conditions per place. [2022-11-16 12:25:52,025 INFO L137 encePairwiseOnDemand]: 293/299 looper letters, 47 selfloop transitions, 6 changer transitions 0/311 dead transitions. [2022-11-16 12:25:52,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 311 transitions, 1370 flow [2022-11-16 12:25:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:25:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:25:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1466 transitions. [2022-11-16 12:25:52,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171683389074693 [2022-11-16 12:25:52,029 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1466 transitions. [2022-11-16 12:25:52,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1466 transitions. [2022-11-16 12:25:52,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:52,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1466 transitions. [2022-11-16 12:25:52,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:52,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:52,037 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:52,037 INFO L175 Difference]: Start difference. First operand has 323 places, 308 transitions, 1254 flow. Second operand 6 states and 1466 transitions. [2022-11-16 12:25:52,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 311 transitions, 1370 flow [2022-11-16 12:25:52,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 311 transitions, 1364 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:25:52,057 INFO L231 Difference]: Finished difference. Result has 324 places, 307 transitions, 1258 flow [2022-11-16 12:25:52,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1258, PETRI_PLACES=324, PETRI_TRANSITIONS=307} [2022-11-16 12:25:52,059 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 71 predicate places. [2022-11-16 12:25:52,059 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 307 transitions, 1258 flow [2022-11-16 12:25:52,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.5) internal successors, (1443), 6 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:52,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:52,060 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:52,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:25:52,061 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:52,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:52,061 INFO L85 PathProgramCache]: Analyzing trace with hash 902370920, now seen corresponding path program 1 times [2022-11-16 12:25:52,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:52,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197094292] [2022-11-16 12:25:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:52,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:52,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:52,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197094292] [2022-11-16 12:25:52,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197094292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:52,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:52,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:25:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808023266] [2022-11-16 12:25:52,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:52,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:25:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:25:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:25:52,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-16 12:25:52,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 307 transitions, 1258 flow. Second operand has 8 states, 8 states have (on average 230.5) internal successors, (1844), 8 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:52,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:52,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-16 12:25:52,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:52,688 INFO L130 PetriNetUnfolder]: 138/896 cut-off events. [2022-11-16 12:25:52,688 INFO L131 PetriNetUnfolder]: For 521/521 co-relation queries the response was YES. [2022-11-16 12:25:52,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2090 conditions, 896 events. 138/896 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5337 event pairs, 34 based on Foata normal form. 6/898 useless extension candidates. Maximal degree in co-relation 1894. Up to 91 conditions per place. [2022-11-16 12:25:52,707 INFO L137 encePairwiseOnDemand]: 285/299 looper letters, 60 selfloop transitions, 19 changer transitions 0/319 dead transitions. [2022-11-16 12:25:52,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 319 transitions, 1443 flow [2022-11-16 12:25:52,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:25:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:25:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2565 transitions. [2022-11-16 12:25:52,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7798723016114321 [2022-11-16 12:25:52,715 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2565 transitions. [2022-11-16 12:25:52,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2565 transitions. [2022-11-16 12:25:52,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:52,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2565 transitions. [2022-11-16 12:25:52,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.1818181818182) internal successors, (2565), 11 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:52,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:52,735 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:52,735 INFO L175 Difference]: Start difference. First operand has 324 places, 307 transitions, 1258 flow. Second operand 11 states and 2565 transitions. [2022-11-16 12:25:52,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 319 transitions, 1443 flow [2022-11-16 12:25:52,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 319 transitions, 1425 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:25:52,750 INFO L231 Difference]: Finished difference. Result has 328 places, 305 transitions, 1263 flow [2022-11-16 12:25:52,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1263, PETRI_PLACES=328, PETRI_TRANSITIONS=305} [2022-11-16 12:25:52,751 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 75 predicate places. [2022-11-16 12:25:52,751 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 305 transitions, 1263 flow [2022-11-16 12:25:52,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 230.5) internal successors, (1844), 8 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:52,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:52,752 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:52,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:25:52,753 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:52,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1600876657, now seen corresponding path program 1 times [2022-11-16 12:25:52,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:52,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128276509] [2022-11-16 12:25:52,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:52,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:52,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:52,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128276509] [2022-11-16 12:25:52,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128276509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:52,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:52,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:25:52,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638283807] [2022-11-16 12:25:52,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:52,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:25:52,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:52,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:25:52,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:25:52,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 299 [2022-11-16 12:25:52,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 305 transitions, 1263 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:52,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:52,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 299 [2022-11-16 12:25:52,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:53,354 INFO L130 PetriNetUnfolder]: 160/1780 cut-off events. [2022-11-16 12:25:53,355 INFO L131 PetriNetUnfolder]: For 1175/1175 co-relation queries the response was YES. [2022-11-16 12:25:53,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 1780 events. 160/1780 cut-off events. For 1175/1175 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 13494 event pairs, 64 based on Foata normal form. 0/1701 useless extension candidates. Maximal degree in co-relation 3303. Up to 157 conditions per place. [2022-11-16 12:25:53,375 INFO L137 encePairwiseOnDemand]: 293/299 looper letters, 47 selfloop transitions, 6 changer transitions 0/308 dead transitions. [2022-11-16 12:25:53,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 308 transitions, 1377 flow [2022-11-16 12:25:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:25:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:25:53,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1466 transitions. [2022-11-16 12:25:53,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171683389074693 [2022-11-16 12:25:53,379 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1466 transitions. [2022-11-16 12:25:53,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1466 transitions. [2022-11-16 12:25:53,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:53,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1466 transitions. [2022-11-16 12:25:53,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:53,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:53,388 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:53,388 INFO L175 Difference]: Start difference. First operand has 328 places, 305 transitions, 1263 flow. Second operand 6 states and 1466 transitions. [2022-11-16 12:25:53,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 308 transitions, 1377 flow [2022-11-16 12:25:53,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 308 transitions, 1342 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-16 12:25:53,405 INFO L231 Difference]: Finished difference. Result has 324 places, 304 transitions, 1238 flow [2022-11-16 12:25:53,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1238, PETRI_PLACES=324, PETRI_TRANSITIONS=304} [2022-11-16 12:25:53,406 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 71 predicate places. [2022-11-16 12:25:53,406 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 304 transitions, 1238 flow [2022-11-16 12:25:53,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:53,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:53,407 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:53,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:25:53,407 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:53,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2091271753, now seen corresponding path program 1 times [2022-11-16 12:25:53,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:53,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21842580] [2022-11-16 12:25:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:53,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:53,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:53,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21842580] [2022-11-16 12:25:53,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21842580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:53,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:53,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:25:53,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689188428] [2022-11-16 12:25:53,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:53,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:25:53,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:53,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:25:53,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:25:53,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-16 12:25:53,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 304 transitions, 1238 flow. Second operand has 8 states, 8 states have (on average 230.625) internal successors, (1845), 8 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:53,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:53,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-16 12:25:53,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:54,034 INFO L130 PetriNetUnfolder]: 124/878 cut-off events. [2022-11-16 12:25:54,034 INFO L131 PetriNetUnfolder]: For 457/457 co-relation queries the response was YES. [2022-11-16 12:25:54,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 878 events. 124/878 cut-off events. For 457/457 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5100 event pairs, 34 based on Foata normal form. 3/878 useless extension candidates. Maximal degree in co-relation 1818. Up to 91 conditions per place. [2022-11-16 12:25:54,046 INFO L137 encePairwiseOnDemand]: 285/299 looper letters, 58 selfloop transitions, 17 changer transitions 0/318 dead transitions. [2022-11-16 12:25:54,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 318 transitions, 1431 flow [2022-11-16 12:25:54,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:25:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:25:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2566 transitions. [2022-11-16 12:25:54,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7801763453937367 [2022-11-16 12:25:54,057 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2566 transitions. [2022-11-16 12:25:54,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2566 transitions. [2022-11-16 12:25:54,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:54,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2566 transitions. [2022-11-16 12:25:54,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.27272727272728) internal successors, (2566), 11 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:54,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:54,074 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:54,075 INFO L175 Difference]: Start difference. First operand has 324 places, 304 transitions, 1238 flow. Second operand 11 states and 2566 transitions. [2022-11-16 12:25:54,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 318 transitions, 1431 flow [2022-11-16 12:25:54,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 318 transitions, 1413 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:25:54,089 INFO L231 Difference]: Finished difference. Result has 328 places, 303 transitions, 1250 flow [2022-11-16 12:25:54,089 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1250, PETRI_PLACES=328, PETRI_TRANSITIONS=303} [2022-11-16 12:25:54,090 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 75 predicate places. [2022-11-16 12:25:54,090 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 303 transitions, 1250 flow [2022-11-16 12:25:54,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 230.625) internal successors, (1845), 8 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:54,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:54,091 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:54,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:25:54,092 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:54,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1588561684, now seen corresponding path program 1 times [2022-11-16 12:25:54,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:54,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141729024] [2022-11-16 12:25:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:54,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:54,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:54,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141729024] [2022-11-16 12:25:54,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141729024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:54,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:54,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:25:54,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945777992] [2022-11-16 12:25:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:54,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:25:54,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:54,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:25:54,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:25:54,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-16 12:25:54,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 303 transitions, 1250 flow. Second operand has 8 states, 8 states have (on average 230.625) internal successors, (1845), 8 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:54,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:54,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-16 12:25:54,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:54,927 INFO L130 PetriNetUnfolder]: 211/1647 cut-off events. [2022-11-16 12:25:54,927 INFO L131 PetriNetUnfolder]: For 1096/1096 co-relation queries the response was YES. [2022-11-16 12:25:54,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3552 conditions, 1647 events. 211/1647 cut-off events. For 1096/1096 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12347 event pairs, 52 based on Foata normal form. 8/1548 useless extension candidates. Maximal degree in co-relation 3090. Up to 129 conditions per place. [2022-11-16 12:25:54,949 INFO L137 encePairwiseOnDemand]: 285/299 looper letters, 60 selfloop transitions, 19 changer transitions 0/315 dead transitions. [2022-11-16 12:25:54,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 315 transitions, 1428 flow [2022-11-16 12:25:54,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:25:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:25:54,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2565 transitions. [2022-11-16 12:25:54,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7798723016114321 [2022-11-16 12:25:54,954 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2565 transitions. [2022-11-16 12:25:54,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2565 transitions. [2022-11-16 12:25:54,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:54,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2565 transitions. [2022-11-16 12:25:54,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.1818181818182) internal successors, (2565), 11 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:54,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:54,968 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:54,968 INFO L175 Difference]: Start difference. First operand has 328 places, 303 transitions, 1250 flow. Second operand 11 states and 2565 transitions. [2022-11-16 12:25:54,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 315 transitions, 1428 flow [2022-11-16 12:25:54,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 315 transitions, 1384 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-11-16 12:25:54,983 INFO L231 Difference]: Finished difference. Result has 327 places, 301 transitions, 1229 flow [2022-11-16 12:25:54,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1229, PETRI_PLACES=327, PETRI_TRANSITIONS=301} [2022-11-16 12:25:54,985 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 74 predicate places. [2022-11-16 12:25:54,985 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 301 transitions, 1229 flow [2022-11-16 12:25:54,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 230.625) internal successors, (1845), 8 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:54,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:25:54,986 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:25:54,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:25:54,986 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 47 more)] === [2022-11-16 12:25:54,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:25:54,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2000772850, now seen corresponding path program 1 times [2022-11-16 12:25:54,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:25:54,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104794342] [2022-11-16 12:25:54,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:25:54,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:25:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:25:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:25:55,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:25:55,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104794342] [2022-11-16 12:25:55,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104794342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:25:55,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:25:55,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:25:55,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008237963] [2022-11-16 12:25:55,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:25:55,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:25:55,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:25:55,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:25:55,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:25:55,148 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 299 [2022-11-16 12:25:55,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 301 transitions, 1229 flow. Second operand has 8 states, 8 states have (on average 230.75) internal successors, (1846), 8 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:55,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:25:55,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 299 [2022-11-16 12:25:55,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:25:55,743 INFO L130 PetriNetUnfolder]: 190/1622 cut-off events. [2022-11-16 12:25:55,743 INFO L131 PetriNetUnfolder]: For 1036/1036 co-relation queries the response was YES. [2022-11-16 12:25:55,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3464 conditions, 1622 events. 190/1622 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11947 event pairs, 52 based on Foata normal form. 4/1533 useless extension candidates. Maximal degree in co-relation 3021. Up to 129 conditions per place. [2022-11-16 12:25:55,762 INFO L137 encePairwiseOnDemand]: 285/299 looper letters, 0 selfloop transitions, 0 changer transitions 315/315 dead transitions. [2022-11-16 12:25:55,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 315 transitions, 1415 flow [2022-11-16 12:25:55,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:25:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:25:55,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2566 transitions. [2022-11-16 12:25:55,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7801763453937367 [2022-11-16 12:25:55,767 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2566 transitions. [2022-11-16 12:25:55,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2566 transitions. [2022-11-16 12:25:55,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:25:55,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2566 transitions. [2022-11-16 12:25:55,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 233.27272727272728) internal successors, (2566), 11 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:55,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:55,777 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 299.0) internal successors, (3588), 12 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:55,777 INFO L175 Difference]: Start difference. First operand has 327 places, 301 transitions, 1229 flow. Second operand 11 states and 2566 transitions. [2022-11-16 12:25:55,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 315 transitions, 1415 flow [2022-11-16 12:25:55,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 315 transitions, 1373 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-11-16 12:25:55,791 INFO L231 Difference]: Finished difference. Result has 327 places, 0 transitions, 0 flow [2022-11-16 12:25:55,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=327, PETRI_TRANSITIONS=0} [2022-11-16 12:25:55,792 INFO L288 CegarLoopForPetriNet]: 253 programPoint places, 74 predicate places. [2022-11-16 12:25:55,793 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 0 transitions, 0 flow [2022-11-16 12:25:55,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 230.75) internal successors, (1846), 8 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:25:55,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 50 remaining) [2022-11-16 12:25:55,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 50 remaining) [2022-11-16 12:25:55,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 50 remaining) [2022-11-16 12:25:55,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 50 remaining) [2022-11-16 12:25:55,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 50 remaining) [2022-11-16 12:25:55,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 50 remaining) [2022-11-16 12:25:55,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 50 remaining) [2022-11-16 12:25:55,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 50 remaining) [2022-11-16 12:25:55,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 50 remaining) [2022-11-16 12:25:55,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 50 remaining) [2022-11-16 12:25:55,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 50 remaining) [2022-11-16 12:25:55,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 50 remaining) [2022-11-16 12:25:55,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 50 remaining) [2022-11-16 12:25:55,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 50 remaining) [2022-11-16 12:25:55,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 50 remaining) [2022-11-16 12:25:55,802 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 50 remaining) [2022-11-16 12:25:55,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 50 remaining) [2022-11-16 12:25:55,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 50 remaining) [2022-11-16 12:25:55,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 50 remaining) [2022-11-16 12:25:55,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 50 remaining) [2022-11-16 12:25:55,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 50 remaining) [2022-11-16 12:25:55,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 50 remaining) [2022-11-16 12:25:55,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 50 remaining) [2022-11-16 12:25:55,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 50 remaining) [2022-11-16 12:25:55,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 50 remaining) [2022-11-16 12:25:55,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 50 remaining) [2022-11-16 12:25:55,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 50 remaining) [2022-11-16 12:25:55,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 50 remaining) [2022-11-16 12:25:55,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 50 remaining) [2022-11-16 12:25:55,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 50 remaining) [2022-11-16 12:25:55,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 50 remaining) [2022-11-16 12:25:55,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 50 remaining) [2022-11-16 12:25:55,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 50 remaining) [2022-11-16 12:25:55,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 50 remaining) [2022-11-16 12:25:55,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 50 remaining) [2022-11-16 12:25:55,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 50 remaining) [2022-11-16 12:25:55,809 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 50 remaining) [2022-11-16 12:25:55,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 50 remaining) [2022-11-16 12:25:55,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 50 remaining) [2022-11-16 12:25:55,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 50 remaining) [2022-11-16 12:25:55,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 50 remaining) [2022-11-16 12:25:55,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 50 remaining) [2022-11-16 12:25:55,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 50 remaining) [2022-11-16 12:25:55,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 50 remaining) [2022-11-16 12:25:55,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 50 remaining) [2022-11-16 12:25:55,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 50 remaining) [2022-11-16 12:25:55,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 50 remaining) [2022-11-16 12:25:55,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 50 remaining) [2022-11-16 12:25:55,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 50 remaining) [2022-11-16 12:25:55,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 50 remaining) [2022-11-16 12:25:55,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:25:55,813 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] [2022-11-16 12:25:55,819 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:25:55,819 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:25:55,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:25:55 BasicIcfg [2022-11-16 12:25:55,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:25:55,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:25:55,826 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:25:55,826 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:25:55,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:25:38" (3/4) ... [2022-11-16 12:25:55,829 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:25:55,835 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:25:55,836 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:25:55,841 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-16 12:25:55,842 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:25:55,842 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:25:55,842 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:25:55,886 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:25:55,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:25:55,887 INFO L158 Benchmark]: Toolchain (without parser) took 18496.56ms. Allocated memory was 104.9MB in the beginning and 461.4MB in the end (delta: 356.5MB). Free memory was 58.4MB in the beginning and 303.7MB in the end (delta: -245.3MB). Peak memory consumption was 112.1MB. Max. memory is 16.1GB. [2022-11-16 12:25:55,888 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:25:55,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.42ms. Allocated memory is still 104.9MB. Free memory was 58.1MB in the beginning and 79.0MB in the end (delta: -20.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 12:25:55,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.81ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 76.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:25:55,889 INFO L158 Benchmark]: Boogie Preprocessor took 47.83ms. Allocated memory is still 104.9MB. Free memory was 76.6MB in the beginning and 75.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:25:55,889 INFO L158 Benchmark]: RCFGBuilder took 788.31ms. Allocated memory is still 104.9MB. Free memory was 75.1MB in the beginning and 52.8MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-16 12:25:55,889 INFO L158 Benchmark]: TraceAbstraction took 17230.57ms. Allocated memory was 104.9MB in the beginning and 461.4MB in the end (delta: 356.5MB). Free memory was 52.3MB in the beginning and 305.8MB in the end (delta: -253.5MB). Peak memory consumption was 104.6MB. Max. memory is 16.1GB. [2022-11-16 12:25:55,890 INFO L158 Benchmark]: Witness Printer took 60.89ms. Allocated memory is still 461.4MB. Free memory was 305.8MB in the beginning and 303.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:25:55,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.42ms. Allocated memory is still 104.9MB. Free memory was 58.1MB in the beginning and 79.0MB in the end (delta: -20.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.81ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 76.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.83ms. Allocated memory is still 104.9MB. Free memory was 76.6MB in the beginning and 75.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 788.31ms. Allocated memory is still 104.9MB. Free memory was 75.1MB in the beginning and 52.8MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 17230.57ms. Allocated memory was 104.9MB in the beginning and 461.4MB in the end (delta: 356.5MB). Free memory was 52.3MB in the beginning and 305.8MB in the end (delta: -253.5MB). Peak memory consumption was 104.6MB. Max. memory is 16.1GB. * Witness Printer took 60.89ms. Allocated memory is still 461.4MB. Free memory was 305.8MB in the beginning and 303.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 475 locations, 50 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: 16.9s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2177 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2177 mSDsluCounter, 1911 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1127 mSDsCounter, 193 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3177 IncrementalHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 193 mSolverCounterUnsat, 784 mSDtfsCounter, 3177 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1263occurred in iteration=22, InterpolantAutomatonStates: 198, 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, 2.8s InterpolantComputationTime, 2006 NumberOfCodeBlocks, 2006 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1980 ConstructedInterpolants, 0 QuantifiedInterpolants, 5148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 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 24 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:25:55,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5a2af9a-d792-4806-9989-24d70c7a10d8/bin/uautomizer-tPACEb0tL8/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