./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8 --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 b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da --- 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-2329fc7 [2022-12-13 15:48:21,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:48:21,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:48:21,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:48:21,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:48:21,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:48:21,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:48:21,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:48:21,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:48:21,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:48:21,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:48:21,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:48:21,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:48:21,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:48:21,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:48:21,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:48:21,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:48:21,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:48:21,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:48:21,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:48:21,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:48:21,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:48:21,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:48:21,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:48:21,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:48:21,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:48:21,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:48:21,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:48:21,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:48:21,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:48:21,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:48:21,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:48:21,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:48:21,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:48:22,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:48:22,001 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:48:22,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:48:22,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:48:22,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:48:22,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:48:22,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:48:22,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 15:48:22,022 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:48:22,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:48:22,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:48:22,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:48:22,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:48:22,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:48:22,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:48:22,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:48:22,029 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:48:22,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:48:22,030 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:48:22,030 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:48:22,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:48:22,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:48:22,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:48:22,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:48:22,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:48:22,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:48:22,031 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 15:48:22,031 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:48:22,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:48:22,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:48:22,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:48:22,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:48:22,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:48:22,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:48:22,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:48:22,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:48:22,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:48:22,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:48:22,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:48:22,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:48:22,034 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:48:22,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:48:22,034 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:48:22,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:48:22,034 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:48:22,035 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78a1de0122078b80177387d59eedcdf8d73ccef913955b4bda0200e53e1d3da [2022-12-13 15:48:22,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:48:22,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:48:22,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:48:22,238 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:48:22,239 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:48:22,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-12-13 15:48:24,864 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:48:25,005 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:48:25,005 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2022-12-13 15:48:25,010 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/data/9e541abb3/c315e9068c9540b0ae8a8768259a9566/FLAGb450731ed [2022-12-13 15:48:25,020 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/data/9e541abb3/c315e9068c9540b0ae8a8768259a9566 [2022-12-13 15:48:25,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:48:25,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:48:25,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:48:25,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:48:25,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:48:25,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dbd77d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25, skipping insertion in model container [2022-12-13 15:48:25,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:48:25,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:48:25,168 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-12-13 15:48:25,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:48:25,180 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:48:25,196 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2482,2495] [2022-12-13 15:48:25,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:48:25,209 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:48:25,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25 WrapperNode [2022-12-13 15:48:25,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:48:25,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:48:25,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:48:25,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:48:25,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,243 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 238 [2022-12-13 15:48:25,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:48:25,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:48:25,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:48:25,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:48:25,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,263 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:48:25,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:48:25,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:48:25,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:48:25,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (1/1) ... [2022-12-13 15:48:25,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:48:25,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:48:25,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:48:25,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:48:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:48:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:48:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:48:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:48:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 15:48:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 15:48:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 15:48:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 15:48:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:48:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 15:48:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:48:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:48:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:48:25,330 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 15:48:25,417 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:48:25,418 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:48:25,776 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:48:25,785 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:48:25,786 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 15:48:25,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:48:25 BoogieIcfgContainer [2022-12-13 15:48:25,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:48:25,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:48:25,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:48:25,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:48:25,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:48:25" (1/3) ... [2022-12-13 15:48:25,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab9b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:48:25, skipping insertion in model container [2022-12-13 15:48:25,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:48:25" (2/3) ... [2022-12-13 15:48:25,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab9b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:48:25, skipping insertion in model container [2022-12-13 15:48:25,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:48:25" (3/3) ... [2022-12-13 15:48:25,794 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2022-12-13 15:48:25,801 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:48:25,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:48:25,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-12-13 15:48:25,809 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:48:25,879 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 15:48:25,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 325 transitions, 666 flow [2022-12-13 15:48:25,979 INFO L130 PetriNetUnfolder]: 25/323 cut-off events. [2022-12-13 15:48:25,979 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:48:25,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 323 events. 25/323 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 634 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 203. Up to 3 conditions per place. [2022-12-13 15:48:25,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 325 transitions, 666 flow [2022-12-13 15:48:25,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 288 transitions, 585 flow [2022-12-13 15:48:25,992 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:48:25,999 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 288 transitions, 585 flow [2022-12-13 15:48:26,001 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 288 transitions, 585 flow [2022-12-13 15:48:26,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 288 transitions, 585 flow [2022-12-13 15:48:26,037 INFO L130 PetriNetUnfolder]: 22/288 cut-off events. [2022-12-13 15:48:26,037 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:48:26,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 288 events. 22/288 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 471 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 203. Up to 3 conditions per place. [2022-12-13 15:48:26,042 INFO L119 LiptonReduction]: Number of co-enabled transitions 15200 [2022-12-13 15:48:35,919 INFO L134 LiptonReduction]: Checked pairs total: 18170 [2022-12-13 15:48:35,919 INFO L136 LiptonReduction]: Total number of compositions: 370 [2022-12-13 15:48:35,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:48:35,937 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;@110dba34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:48:35,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-12-13 15:48:35,939 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 15:48:35,939 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:48:35,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:35,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 15:48:35,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:35,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:35,943 INFO L85 PathProgramCache]: Analyzing trace with hash 41587, now seen corresponding path program 1 times [2022-12-13 15:48:35,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:35,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896228205] [2022-12-13 15:48:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:35,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:36,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:36,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896228205] [2022-12-13 15:48:36,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896228205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:36,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:36,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:48:36,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434557858] [2022-12-13 15:48:36,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:36,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:48:36,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:36,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:48:36,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:48:36,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 695 [2022-12-13 15:48:36,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:36,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:36,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 695 [2022-12-13 15:48:36,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:36,331 INFO L130 PetriNetUnfolder]: 539/902 cut-off events. [2022-12-13 15:48:36,331 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-13 15:48:36,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 902 events. 539/902 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4120 event pairs, 459 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 1728. Up to 902 conditions per place. [2022-12-13 15:48:36,337 INFO L137 encePairwiseOnDemand]: 688/695 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-12-13 15:48:36,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 165 flow [2022-12-13 15:48:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:48:36,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:48:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 942 transitions. [2022-12-13 15:48:36,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45179856115107914 [2022-12-13 15:48:36,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 942 transitions. [2022-12-13 15:48:36,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 942 transitions. [2022-12-13 15:48:36,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:36,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 942 transitions. [2022-12-13 15:48:36,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:36,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:36,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:36,377 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 99 flow. Second operand 3 states and 942 transitions. [2022-12-13 15:48:36,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 165 flow [2022-12-13 15:48:36,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 15:48:36,381 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 84 flow [2022-12-13 15:48:36,382 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2022-12-13 15:48:36,385 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -7 predicate places. [2022-12-13 15:48:36,385 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 84 flow [2022-12-13 15:48:36,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:36,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:36,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 15:48:36,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:48:36,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:36,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash 41628, now seen corresponding path program 1 times [2022-12-13 15:48:36,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:36,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842489934] [2022-12-13 15:48:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:36,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:36,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:36,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842489934] [2022-12-13 15:48:36,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842489934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:36,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:36,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:48:36,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151698141] [2022-12-13 15:48:36,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:36,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:48:36,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:48:36,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:48:36,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 695 [2022-12-13 15:48:36,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:36,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:36,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 695 [2022-12-13 15:48:36,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:36,709 INFO L130 PetriNetUnfolder]: 1077/1801 cut-off events. [2022-12-13 15:48:36,710 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 15:48:36,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3664 conditions, 1801 events. 1077/1801 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 9519 event pairs, 918 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 3658. Up to 903 conditions per place. [2022-12-13 15:48:36,716 INFO L137 encePairwiseOnDemand]: 689/695 looper letters, 71 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2022-12-13 15:48:36,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 75 transitions, 310 flow [2022-12-13 15:48:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:48:36,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:48:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 974 transitions. [2022-12-13 15:48:36,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4671462829736211 [2022-12-13 15:48:36,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 974 transitions. [2022-12-13 15:48:36,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 974 transitions. [2022-12-13 15:48:36,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:36,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 974 transitions. [2022-12-13 15:48:36,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:36,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:36,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:36,724 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 974 transitions. [2022-12-13 15:48:36,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 75 transitions, 310 flow [2022-12-13 15:48:36,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 75 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:48:36,725 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 115 flow [2022-12-13 15:48:36,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2022-12-13 15:48:36,726 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2022-12-13 15:48:36,726 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 115 flow [2022-12-13 15:48:36,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.6666666666667) internal successors, (899), 3 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:36,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:36,726 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 15:48:36,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:48:36,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:36,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:36,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1293160, now seen corresponding path program 1 times [2022-12-13 15:48:36,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:36,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885780648] [2022-12-13 15:48:36,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:36,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:36,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:36,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885780648] [2022-12-13 15:48:36,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885780648] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:48:36,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162359949] [2022-12-13 15:48:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:36,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:36,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:48:36,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:48:36,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:48:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:36,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:48:36,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:48:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:36,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:48:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:36,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162359949] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:48:36,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:48:36,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-13 15:48:36,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173328142] [2022-12-13 15:48:36,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:48:36,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:48:36,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:36,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:48:36,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:48:36,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 695 [2022-12-13 15:48:36,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:36,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:36,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 695 [2022-12-13 15:48:36,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:37,653 INFO L130 PetriNetUnfolder]: 2691/4498 cut-off events. [2022-12-13 15:48:37,653 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-13 15:48:37,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9171 conditions, 4498 events. 2691/4498 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27550 event pairs, 2295 based on Foata normal form. 0/1946 useless extension candidates. Maximal degree in co-relation 9162. Up to 903 conditions per place. [2022-12-13 15:48:37,676 INFO L137 encePairwiseOnDemand]: 689/695 looper letters, 170 selfloop transitions, 13 changer transitions 0/183 dead transitions. [2022-12-13 15:48:37,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 183 transitions, 803 flow [2022-12-13 15:48:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:48:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:48:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1983 transitions. [2022-12-13 15:48:37,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47553956834532374 [2022-12-13 15:48:37,680 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1983 transitions. [2022-12-13 15:48:37,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1983 transitions. [2022-12-13 15:48:37,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:37,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1983 transitions. [2022-12-13 15:48:37,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 330.5) internal successors, (1983), 6 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:37,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 695.0) internal successors, (4865), 7 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:37,689 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 695.0) internal successors, (4865), 7 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:37,689 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 115 flow. Second operand 6 states and 1983 transitions. [2022-12-13 15:48:37,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 183 transitions, 803 flow [2022-12-13 15:48:37,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 183 transitions, 789 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:48:37,691 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 200 flow [2022-12-13 15:48:37,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2022-12-13 15:48:37,692 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2022-12-13 15:48:37,692 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 200 flow [2022-12-13 15:48:37,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.0) internal successors, (1800), 6 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:37,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:37,693 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:48:37,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:48:37,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:37,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:37,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1243167451, now seen corresponding path program 1 times [2022-12-13 15:48:37,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:37,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605705936] [2022-12-13 15:48:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:37,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:37,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:37,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605705936] [2022-12-13 15:48:37,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605705936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:37,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:37,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:48:37,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887290768] [2022-12-13 15:48:37,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:37,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:48:37,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:38,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:48:38,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:48:38,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 695 [2022-12-13 15:48:38,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:38,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:38,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 695 [2022-12-13 15:48:38,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:38,641 INFO L130 PetriNetUnfolder]: 2597/4352 cut-off events. [2022-12-13 15:48:38,642 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-12-13 15:48:38,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8903 conditions, 4352 events. 2597/4352 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 27162 event pairs, 1935 based on Foata normal form. 0/1904 useless extension candidates. Maximal degree in co-relation 8891. Up to 3077 conditions per place. [2022-12-13 15:48:38,655 INFO L137 encePairwiseOnDemand]: 687/695 looper letters, 101 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2022-12-13 15:48:38,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 111 transitions, 549 flow [2022-12-13 15:48:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:48:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:48:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1838 transitions. [2022-12-13 15:48:38,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4407673860911271 [2022-12-13 15:48:38,660 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1838 transitions. [2022-12-13 15:48:38,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1838 transitions. [2022-12-13 15:48:38,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:38,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1838 transitions. [2022-12-13 15:48:38,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 306.3333333333333) internal successors, (1838), 6 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:38,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 695.0) internal successors, (4865), 7 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:38,668 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 695.0) internal successors, (4865), 7 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:38,668 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 200 flow. Second operand 6 states and 1838 transitions. [2022-12-13 15:48:38,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 111 transitions, 549 flow [2022-12-13 15:48:38,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 111 transitions, 530 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 15:48:38,670 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 240 flow [2022-12-13 15:48:38,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2022-12-13 15:48:38,671 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2022-12-13 15:48:38,671 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 240 flow [2022-12-13 15:48:38,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:38,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:38,671 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:48:38,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:48:38,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:38,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:38,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1243167570, now seen corresponding path program 1 times [2022-12-13 15:48:38,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:38,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247528046] [2022-12-13 15:48:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:38,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:38,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:38,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247528046] [2022-12-13 15:48:38,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247528046] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:38,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:38,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:48:38,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6939942] [2022-12-13 15:48:38,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:38,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:48:38,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:38,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:48:38,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:48:38,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 695 [2022-12-13 15:48:38,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:38,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:38,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 695 [2022-12-13 15:48:38,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:39,780 INFO L130 PetriNetUnfolder]: 4812/8044 cut-off events. [2022-12-13 15:48:39,780 INFO L131 PetriNetUnfolder]: For 2309/2309 co-relation queries the response was YES. [2022-12-13 15:48:39,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17689 conditions, 8044 events. 4812/8044 cut-off events. For 2309/2309 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 55316 event pairs, 3796 based on Foata normal form. 262/4496 useless extension candidates. Maximal degree in co-relation 17672. Up to 3847 conditions per place. [2022-12-13 15:48:39,813 INFO L137 encePairwiseOnDemand]: 687/695 looper letters, 143 selfloop transitions, 6 changer transitions 0/149 dead transitions. [2022-12-13 15:48:39,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 149 transitions, 792 flow [2022-12-13 15:48:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:48:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:48:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1873 transitions. [2022-12-13 15:48:39,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44916067146282973 [2022-12-13 15:48:39,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1873 transitions. [2022-12-13 15:48:39,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1873 transitions. [2022-12-13 15:48:39,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:39,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1873 transitions. [2022-12-13 15:48:39,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 312.1666666666667) internal successors, (1873), 6 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:39,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 695.0) internal successors, (4865), 7 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:39,828 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 695.0) internal successors, (4865), 7 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:39,828 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 240 flow. Second operand 6 states and 1873 transitions. [2022-12-13 15:48:39,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 149 transitions, 792 flow [2022-12-13 15:48:39,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 149 transitions, 787 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 15:48:39,832 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 296 flow [2022-12-13 15:48:39,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2022-12-13 15:48:39,833 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2022-12-13 15:48:39,833 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 296 flow [2022-12-13 15:48:39,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:39,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:39,834 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 15:48:39,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:48:39,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash -127502948, now seen corresponding path program 2 times [2022-12-13 15:48:39,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:39,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556661345] [2022-12-13 15:48:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:39,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:39,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:39,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556661345] [2022-12-13 15:48:39,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556661345] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:48:39,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651071809] [2022-12-13 15:48:39,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:48:39,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:39,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:48:39,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:48:39,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:48:39,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 15:48:39,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:48:39,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:48:39,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:48:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 15:48:39,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:48:39,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651071809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:39,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:48:39,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 15:48:39,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201426140] [2022-12-13 15:48:39,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:39,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:48:39,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:39,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:48:39,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:48:39,994 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 695 [2022-12-13 15:48:39,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:39,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:39,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 695 [2022-12-13 15:48:39,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:40,746 INFO L130 PetriNetUnfolder]: 4812/8043 cut-off events. [2022-12-13 15:48:40,746 INFO L131 PetriNetUnfolder]: For 4853/4853 co-relation queries the response was YES. [2022-12-13 15:48:40,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18709 conditions, 8043 events. 4812/8043 cut-off events. For 4853/4853 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 54875 event pairs, 4052 based on Foata normal form. 1/4234 useless extension candidates. Maximal degree in co-relation 18687. Up to 8038 conditions per place. [2022-12-13 15:48:40,768 INFO L137 encePairwiseOnDemand]: 692/695 looper letters, 50 selfloop transitions, 6 changer transitions 0/56 dead transitions. [2022-12-13 15:48:40,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 56 transitions, 398 flow [2022-12-13 15:48:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:48:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:48:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 942 transitions. [2022-12-13 15:48:40,771 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45179856115107914 [2022-12-13 15:48:40,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 942 transitions. [2022-12-13 15:48:40,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 942 transitions. [2022-12-13 15:48:40,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:40,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 942 transitions. [2022-12-13 15:48:40,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:40,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:40,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:40,774 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 296 flow. Second operand 3 states and 942 transitions. [2022-12-13 15:48:40,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 56 transitions, 398 flow [2022-12-13 15:48:40,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 56 transitions, 382 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 15:48:40,781 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 282 flow [2022-12-13 15:48:40,781 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2022-12-13 15:48:40,781 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2022-12-13 15:48:40,781 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 282 flow [2022-12-13 15:48:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:40,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:40,782 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 15:48:40,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:48:40,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:40,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:40,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:40,983 INFO L85 PathProgramCache]: Analyzing trace with hash -115559702, now seen corresponding path program 1 times [2022-12-13 15:48:40,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:40,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743730042] [2022-12-13 15:48:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:40,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:41,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:41,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743730042] [2022-12-13 15:48:41,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743730042] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:48:41,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244581166] [2022-12-13 15:48:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:41,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:41,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:48:41,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:48:41,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:48:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:41,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:48:41,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:48:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:48:41,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:48:41,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244581166] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:41,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:48:41,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-13 15:48:41,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015190889] [2022-12-13 15:48:41,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:41,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:48:41,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:41,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:48:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:48:41,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 695 [2022-12-13 15:48:41,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:41,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:41,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 695 [2022-12-13 15:48:41,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:41,985 INFO L130 PetriNetUnfolder]: 3821/6398 cut-off events. [2022-12-13 15:48:41,985 INFO L131 PetriNetUnfolder]: For 4089/4089 co-relation queries the response was YES. [2022-12-13 15:48:41,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13983 conditions, 6398 events. 3821/6398 cut-off events. For 4089/4089 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 41945 event pairs, 3157 based on Foata normal form. 352/3610 useless extension candidates. Maximal degree in co-relation 13960. Up to 6398 conditions per place. [2022-12-13 15:48:42,001 INFO L137 encePairwiseOnDemand]: 691/695 looper letters, 50 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2022-12-13 15:48:42,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 350 flow [2022-12-13 15:48:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:48:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:48:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2022-12-13 15:48:42,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4513189448441247 [2022-12-13 15:48:42,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2022-12-13 15:48:42,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2022-12-13 15:48:42,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:42,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2022-12-13 15:48:42,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:42,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:42,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:42,007 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 282 flow. Second operand 3 states and 941 transitions. [2022-12-13 15:48:42,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 350 flow [2022-12-13 15:48:42,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 327 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-12-13 15:48:42,009 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 227 flow [2022-12-13 15:48:42,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2022-12-13 15:48:42,010 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2022-12-13 15:48:42,010 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 227 flow [2022-12-13 15:48:42,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:42,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:42,011 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 15:48:42,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:48:42,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:42,211 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:42,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:42,212 INFO L85 PathProgramCache]: Analyzing trace with hash -127148282, now seen corresponding path program 1 times [2022-12-13 15:48:42,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:42,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706811476] [2022-12-13 15:48:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:42,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:42,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:42,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706811476] [2022-12-13 15:48:42,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706811476] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:48:42,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387116215] [2022-12-13 15:48:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:42,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:42,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:48:42,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:48:42,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:48:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:42,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:48:42,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:48:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:48:42,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:48:42,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387116215] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:42,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:48:42,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-12-13 15:48:42,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838093588] [2022-12-13 15:48:42,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:42,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:48:42,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:42,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:48:42,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:48:42,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 695 [2022-12-13 15:48:42,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:42,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:42,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 695 [2022-12-13 15:48:42,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:42,934 INFO L130 PetriNetUnfolder]: 3476/5823 cut-off events. [2022-12-13 15:48:42,935 INFO L131 PetriNetUnfolder]: For 693/693 co-relation queries the response was YES. [2022-12-13 15:48:42,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11980 conditions, 5823 events. 3476/5823 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 37378 event pairs, 2850 based on Foata normal form. 220/3043 useless extension candidates. Maximal degree in co-relation 11962. Up to 5817 conditions per place. [2022-12-13 15:48:42,952 INFO L137 encePairwiseOnDemand]: 691/695 looper letters, 41 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2022-12-13 15:48:42,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 295 flow [2022-12-13 15:48:42,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:48:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:48:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1231 transitions. [2022-12-13 15:48:42,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44280575539568345 [2022-12-13 15:48:42,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1231 transitions. [2022-12-13 15:48:42,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1231 transitions. [2022-12-13 15:48:42,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:42,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1231 transitions. [2022-12-13 15:48:42,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 307.75) internal successors, (1231), 4 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:42,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 695.0) internal successors, (3475), 5 states have internal predecessors, (3475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:42,959 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 695.0) internal successors, (3475), 5 states have internal predecessors, (3475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:42,959 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 227 flow. Second operand 4 states and 1231 transitions. [2022-12-13 15:48:42,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 295 flow [2022-12-13 15:48:42,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 277 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 15:48:42,960 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 195 flow [2022-12-13 15:48:42,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2022-12-13 15:48:42,961 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2022-12-13 15:48:42,961 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 195 flow [2022-12-13 15:48:42,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:42,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:42,961 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:48:42,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:48:43,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:43,162 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:43,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:43,162 INFO L85 PathProgramCache]: Analyzing trace with hash 683155686, now seen corresponding path program 1 times [2022-12-13 15:48:43,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:43,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879316842] [2022-12-13 15:48:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:43,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:43,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:43,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879316842] [2022-12-13 15:48:43,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879316842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:43,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:43,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:48:43,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391259912] [2022-12-13 15:48:43,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:43,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:48:43,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:43,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:48:43,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:48:43,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 695 [2022-12-13 15:48:43,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 195 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:43,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:43,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 695 [2022-12-13 15:48:43,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:44,246 INFO L130 PetriNetUnfolder]: 6156/10283 cut-off events. [2022-12-13 15:48:44,247 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2022-12-13 15:48:44,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21076 conditions, 10283 events. 6156/10283 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 73270 event pairs, 2850 based on Foata normal form. 0/5003 useless extension candidates. Maximal degree in co-relation 21060. Up to 5824 conditions per place. [2022-12-13 15:48:44,277 INFO L137 encePairwiseOnDemand]: 691/695 looper letters, 68 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2022-12-13 15:48:44,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 70 transitions, 384 flow [2022-12-13 15:48:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:48:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:48:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 967 transitions. [2022-12-13 15:48:44,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46378896882494003 [2022-12-13 15:48:44,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 967 transitions. [2022-12-13 15:48:44,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 967 transitions. [2022-12-13 15:48:44,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:44,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 967 transitions. [2022-12-13 15:48:44,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:44,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:44,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:44,284 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 195 flow. Second operand 3 states and 967 transitions. [2022-12-13 15:48:44,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 70 transitions, 384 flow [2022-12-13 15:48:44,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 377 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:48:44,286 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 202 flow [2022-12-13 15:48:44,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2022-12-13 15:48:44,287 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2022-12-13 15:48:44,287 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 202 flow [2022-12-13 15:48:44,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:44,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:44,287 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 15:48:44,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:48:44,287 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash 713603242, now seen corresponding path program 1 times [2022-12-13 15:48:44,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:44,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892722124] [2022-12-13 15:48:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:44,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:44,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:44,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892722124] [2022-12-13 15:48:44,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892722124] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:48:44,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372116540] [2022-12-13 15:48:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:44,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:48:44,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:48:44,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:48:44,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:48:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:44,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:48:44,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:48:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:44,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:48:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:44,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372116540] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:48:44,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:48:44,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 15:48:44,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248896078] [2022-12-13 15:48:44,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:48:44,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:48:44,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:44,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:48:44,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:48:44,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 695 [2022-12-13 15:48:44,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 202 flow. Second operand has 13 states, 13 states have (on average 300.15384615384613) internal successors, (3902), 13 states have internal predecessors, (3902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:44,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:44,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 695 [2022-12-13 15:48:44,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:47,089 INFO L130 PetriNetUnfolder]: 13542/22619 cut-off events. [2022-12-13 15:48:47,089 INFO L131 PetriNetUnfolder]: For 2140/2140 co-relation queries the response was YES. [2022-12-13 15:48:47,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48700 conditions, 22619 events. 13542/22619 cut-off events. For 2140/2140 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 169525 event pairs, 11330 based on Foata normal form. 12/11807 useless extension candidates. Maximal degree in co-relation 48684. Up to 3696 conditions per place. [2022-12-13 15:48:47,160 INFO L137 encePairwiseOnDemand]: 690/695 looper letters, 323 selfloop transitions, 32 changer transitions 0/355 dead transitions. [2022-12-13 15:48:47,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 355 transitions, 1782 flow [2022-12-13 15:48:47,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:48:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:48:47,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3937 transitions. [2022-12-13 15:48:47,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47206235011990405 [2022-12-13 15:48:47,166 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3937 transitions. [2022-12-13 15:48:47,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3937 transitions. [2022-12-13 15:48:47,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:47,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3937 transitions. [2022-12-13 15:48:47,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 328.0833333333333) internal successors, (3937), 12 states have internal predecessors, (3937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:47,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 695.0) internal successors, (9035), 13 states have internal predecessors, (9035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:47,178 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 695.0) internal successors, (9035), 13 states have internal predecessors, (9035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:47,178 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 202 flow. Second operand 12 states and 3937 transitions. [2022-12-13 15:48:47,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 355 transitions, 1782 flow [2022-12-13 15:48:47,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 355 transitions, 1760 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:48:47,185 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 424 flow [2022-12-13 15:48:47,185 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=424, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2022-12-13 15:48:47,186 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 22 predicate places. [2022-12-13 15:48:47,186 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 424 flow [2022-12-13 15:48:47,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 300.15384615384613) internal successors, (3902), 13 states have internal predecessors, (3902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:47,187 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:47,187 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:48:47,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:48:47,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 15:48:47,389 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:47,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:47,390 INFO L85 PathProgramCache]: Analyzing trace with hash -295270965, now seen corresponding path program 1 times [2022-12-13 15:48:47,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:47,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162906828] [2022-12-13 15:48:47,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:47,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:47,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:47,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162906828] [2022-12-13 15:48:47,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162906828] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:47,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:47,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:48:47,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266712740] [2022-12-13 15:48:47,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:47,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:48:47,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:47,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:48:47,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:48:47,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 695 [2022-12-13 15:48:47,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:47,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:47,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 695 [2022-12-13 15:48:47,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:51,589 INFO L130 PetriNetUnfolder]: 22914/38063 cut-off events. [2022-12-13 15:48:51,590 INFO L131 PetriNetUnfolder]: For 2444/2444 co-relation queries the response was YES. [2022-12-13 15:48:51,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80598 conditions, 38063 events. 22914/38063 cut-off events. For 2444/2444 co-relation queries the response was YES. Maximal size of possible extension queue 1463. Compared 315361 event pairs, 11330 based on Foata normal form. 0/19011 useless extension candidates. Maximal degree in co-relation 80575. Up to 22620 conditions per place. [2022-12-13 15:48:51,764 INFO L137 encePairwiseOnDemand]: 692/695 looper letters, 87 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-12-13 15:48:51,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 659 flow [2022-12-13 15:48:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:48:51,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:48:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 965 transitions. [2022-12-13 15:48:51,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4628297362110312 [2022-12-13 15:48:51,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 965 transitions. [2022-12-13 15:48:51,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 965 transitions. [2022-12-13 15:48:51,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:51,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 965 transitions. [2022-12-13 15:48:51,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:51,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:51,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:51,772 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 424 flow. Second operand 3 states and 965 transitions. [2022-12-13 15:48:51,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 659 flow [2022-12-13 15:48:51,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 567 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-12-13 15:48:51,780 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 344 flow [2022-12-13 15:48:51,780 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2022-12-13 15:48:51,780 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2022-12-13 15:48:51,780 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 344 flow [2022-12-13 15:48:51,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:51,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:51,781 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:48:51,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:48:51,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:51,781 INFO L85 PathProgramCache]: Analyzing trace with hash -295270953, now seen corresponding path program 1 times [2022-12-13 15:48:51,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:51,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276377617] [2022-12-13 15:48:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:51,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:48:51,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:51,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276377617] [2022-12-13 15:48:51,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276377617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:51,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:51,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:48:51,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684126239] [2022-12-13 15:48:51,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:51,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:48:51,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:51,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:48:51,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:48:51,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 695 [2022-12-13 15:48:51,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 344 flow. Second operand has 5 states, 5 states have (on average 289.6) internal successors, (1448), 5 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:51,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:51,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 695 [2022-12-13 15:48:51,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:54,522 INFO L130 PetriNetUnfolder]: 13817/23400 cut-off events. [2022-12-13 15:48:54,522 INFO L131 PetriNetUnfolder]: For 5047/5047 co-relation queries the response was YES. [2022-12-13 15:48:54,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53037 conditions, 23400 events. 13817/23400 cut-off events. For 5047/5047 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 181798 event pairs, 10615 based on Foata normal form. 506/14336 useless extension candidates. Maximal degree in co-relation 53014. Up to 19042 conditions per place. [2022-12-13 15:48:54,602 INFO L137 encePairwiseOnDemand]: 686/695 looper letters, 107 selfloop transitions, 4 changer transitions 8/119 dead transitions. [2022-12-13 15:48:54,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 119 transitions, 778 flow [2022-12-13 15:48:54,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:48:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:48:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1520 transitions. [2022-12-13 15:48:54,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.437410071942446 [2022-12-13 15:48:54,605 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1520 transitions. [2022-12-13 15:48:54,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1520 transitions. [2022-12-13 15:48:54,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:54,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1520 transitions. [2022-12-13 15:48:54,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:54,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 695.0) internal successors, (4170), 6 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:54,610 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 695.0) internal successors, (4170), 6 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:54,610 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 344 flow. Second operand 5 states and 1520 transitions. [2022-12-13 15:48:54,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 119 transitions, 778 flow [2022-12-13 15:48:54,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 119 transitions, 775 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:48:54,648 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 369 flow [2022-12-13 15:48:54,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2022-12-13 15:48:54,648 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 25 predicate places. [2022-12-13 15:48:54,648 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 369 flow [2022-12-13 15:48:54,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 289.6) internal successors, (1448), 5 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:54,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:54,649 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:48:54,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:48:54,649 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:54,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:54,649 INFO L85 PathProgramCache]: Analyzing trace with hash -617324008, now seen corresponding path program 1 times [2022-12-13 15:48:54,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:54,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464573484] [2022-12-13 15:48:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:54,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:48:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:54,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464573484] [2022-12-13 15:48:54,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464573484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:54,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:54,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:48:54,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895662335] [2022-12-13 15:48:54,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:54,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:48:54,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:54,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:48:54,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:48:54,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 695 [2022-12-13 15:48:54,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 369 flow. Second operand has 5 states, 5 states have (on average 289.8) internal successors, (1449), 5 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:54,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:54,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 695 [2022-12-13 15:48:54,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:56,791 INFO L130 PetriNetUnfolder]: 11727/19660 cut-off events. [2022-12-13 15:48:56,791 INFO L131 PetriNetUnfolder]: For 5434/5434 co-relation queries the response was YES. [2022-12-13 15:48:56,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49126 conditions, 19660 events. 11727/19660 cut-off events. For 5434/5434 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 146471 event pairs, 9977 based on Foata normal form. 0/12158 useless extension candidates. Maximal degree in co-relation 49100. Up to 19042 conditions per place. [2022-12-13 15:48:56,878 INFO L137 encePairwiseOnDemand]: 690/695 looper letters, 75 selfloop transitions, 3 changer transitions 17/95 dead transitions. [2022-12-13 15:48:56,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 691 flow [2022-12-13 15:48:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:48:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:48:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1494 transitions. [2022-12-13 15:48:56,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42992805755395685 [2022-12-13 15:48:56,881 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1494 transitions. [2022-12-13 15:48:56,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1494 transitions. [2022-12-13 15:48:56,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:56,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1494 transitions. [2022-12-13 15:48:56,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.8) internal successors, (1494), 5 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:56,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 695.0) internal successors, (4170), 6 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:56,887 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 695.0) internal successors, (4170), 6 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:56,887 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 369 flow. Second operand 5 states and 1494 transitions. [2022-12-13 15:48:56,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 691 flow [2022-12-13 15:48:56,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 95 transitions, 686 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:48:56,903 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 367 flow [2022-12-13 15:48:56,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2022-12-13 15:48:56,904 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2022-12-13 15:48:56,904 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 367 flow [2022-12-13 15:48:56,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 289.8) internal successors, (1449), 5 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:56,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:56,904 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:48:56,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:48:56,905 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:56,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:56,905 INFO L85 PathProgramCache]: Analyzing trace with hash 289330595, now seen corresponding path program 1 times [2022-12-13 15:48:56,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:56,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291050057] [2022-12-13 15:48:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:56,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:48:56,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:56,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291050057] [2022-12-13 15:48:56,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291050057] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:56,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:56,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:48:56,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975035220] [2022-12-13 15:48:56,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:56,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:48:56,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:56,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:48:56,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:48:57,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 695 [2022-12-13 15:48:57,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 367 flow. Second operand has 5 states, 5 states have (on average 293.8) internal successors, (1469), 5 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:57,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:57,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 695 [2022-12-13 15:48:57,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:48:59,417 INFO L130 PetriNetUnfolder]: 10636/17777 cut-off events. [2022-12-13 15:48:59,417 INFO L131 PetriNetUnfolder]: For 5850/5850 co-relation queries the response was YES. [2022-12-13 15:48:59,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45229 conditions, 17777 events. 10636/17777 cut-off events. For 5850/5850 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 130300 event pairs, 9110 based on Foata normal form. 92/11569 useless extension candidates. Maximal degree in co-relation 45201. Up to 17367 conditions per place. [2022-12-13 15:48:59,517 INFO L137 encePairwiseOnDemand]: 686/695 looper letters, 83 selfloop transitions, 15 changer transitions 8/106 dead transitions. [2022-12-13 15:48:59,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 106 transitions, 694 flow [2022-12-13 15:48:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:48:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:48:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1537 transitions. [2022-12-13 15:48:59,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4423021582733813 [2022-12-13 15:48:59,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1537 transitions. [2022-12-13 15:48:59,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1537 transitions. [2022-12-13 15:48:59,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:48:59,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1537 transitions. [2022-12-13 15:48:59,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.4) internal successors, (1537), 5 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:59,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 695.0) internal successors, (4170), 6 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:59,525 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 695.0) internal successors, (4170), 6 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:59,525 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 367 flow. Second operand 5 states and 1537 transitions. [2022-12-13 15:48:59,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 106 transitions, 694 flow [2022-12-13 15:48:59,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 673 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-12-13 15:48:59,607 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 401 flow [2022-12-13 15:48:59,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2022-12-13 15:48:59,607 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 29 predicate places. [2022-12-13 15:48:59,607 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 401 flow [2022-12-13 15:48:59,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 293.8) internal successors, (1469), 5 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:59,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:48:59,608 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:48:59,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:48:59,608 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:48:59,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:48:59,608 INFO L85 PathProgramCache]: Analyzing trace with hash 325454795, now seen corresponding path program 1 times [2022-12-13 15:48:59,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:48:59,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832060132] [2022-12-13 15:48:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:48:59,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:48:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:48:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:48:59,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:48:59,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832060132] [2022-12-13 15:48:59,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832060132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:48:59,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:48:59,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:48:59,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601859574] [2022-12-13 15:48:59,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:48:59,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:48:59,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:48:59,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:48:59,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:48:59,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 695 [2022-12-13 15:48:59,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:48:59,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:48:59,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 695 [2022-12-13 15:48:59,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:49:01,390 INFO L130 PetriNetUnfolder]: 10187/17020 cut-off events. [2022-12-13 15:49:01,390 INFO L131 PetriNetUnfolder]: For 6583/6583 co-relation queries the response was YES. [2022-12-13 15:49:01,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43026 conditions, 17020 events. 10187/17020 cut-off events. For 6583/6583 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 132632 event pairs, 132 based on Foata normal form. 0/10552 useless extension candidates. Maximal degree in co-relation 42999. Up to 16447 conditions per place. [2022-12-13 15:49:01,480 INFO L137 encePairwiseOnDemand]: 693/695 looper letters, 79 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2022-12-13 15:49:01,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 615 flow [2022-12-13 15:49:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:49:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:49:01,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 953 transitions. [2022-12-13 15:49:01,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45707434052757795 [2022-12-13 15:49:01,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 953 transitions. [2022-12-13 15:49:01,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 953 transitions. [2022-12-13 15:49:01,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:49:01,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 953 transitions. [2022-12-13 15:49:01,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:01,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:01,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 695.0) internal successors, (2780), 4 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:01,487 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 401 flow. Second operand 3 states and 953 transitions. [2022-12-13 15:49:01,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 615 flow [2022-12-13 15:49:01,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:49:01,500 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 372 flow [2022-12-13 15:49:01,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2022-12-13 15:49:01,501 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 28 predicate places. [2022-12-13 15:49:01,501 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 372 flow [2022-12-13 15:49:01,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:01,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:49:01,501 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:01,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:49:01,502 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:49:01,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash 325454796, now seen corresponding path program 1 times [2022-12-13 15:49:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:01,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399699346] [2022-12-13 15:49:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:01,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:49:01,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:01,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399699346] [2022-12-13 15:49:01,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399699346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:49:01,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:49:01,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:49:01,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173723732] [2022-12-13 15:49:01,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:49:01,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:49:01,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:01,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:49:01,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:49:01,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 695 [2022-12-13 15:49:01,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:01,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:49:01,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 695 [2022-12-13 15:49:01,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:49:03,375 INFO L130 PetriNetUnfolder]: 10006/16697 cut-off events. [2022-12-13 15:49:03,375 INFO L131 PetriNetUnfolder]: For 7302/7302 co-relation queries the response was YES. [2022-12-13 15:49:03,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42473 conditions, 16697 events. 10006/16697 cut-off events. For 7302/7302 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 121040 event pairs, 8632 based on Foata normal form. 0/10317 useless extension candidates. Maximal degree in co-relation 42446. Up to 16627 conditions per place. [2022-12-13 15:49:03,460 INFO L137 encePairwiseOnDemand]: 690/695 looper letters, 52 selfloop transitions, 13 changer transitions 16/81 dead transitions. [2022-12-13 15:49:03,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 582 flow [2022-12-13 15:49:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:49:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:49:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1510 transitions. [2022-12-13 15:49:03,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43453237410071943 [2022-12-13 15:49:03,463 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1510 transitions. [2022-12-13 15:49:03,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1510 transitions. [2022-12-13 15:49:03,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:49:03,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1510 transitions. [2022-12-13 15:49:03,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.0) internal successors, (1510), 5 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:03,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 695.0) internal successors, (4170), 6 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:03,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 695.0) internal successors, (4170), 6 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:03,468 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 372 flow. Second operand 5 states and 1510 transitions. [2022-12-13 15:49:03,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 582 flow [2022-12-13 15:49:03,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 580 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:49:03,486 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 384 flow [2022-12-13 15:49:03,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2022-12-13 15:49:03,486 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 33 predicate places. [2022-12-13 15:49:03,486 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 384 flow [2022-12-13 15:49:03,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:03,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:49:03,487 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:03,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 15:49:03,487 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:49:03,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:03,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1421309668, now seen corresponding path program 1 times [2022-12-13 15:49:03,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:03,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989164912] [2022-12-13 15:49:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:03,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:49:03,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:03,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989164912] [2022-12-13 15:49:03,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989164912] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:49:03,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676159930] [2022-12-13 15:49:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:03,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:03,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:03,797 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:03,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:49:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:03,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 15:49:03,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:03,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:03,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:03,924 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:49:03,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-13 15:49:03,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:49:03,985 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 15:49:03,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 15:49:04,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:49:04,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:04,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:49:04,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:04,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:49:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:49:04,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:06,340 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:06,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-12-13 15:49:06,350 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:06,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 245 treesize of output 239 [2022-12-13 15:49:06,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2022-12-13 15:49:06,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 214 [2022-12-13 15:49:06,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 198 [2022-12-13 15:49:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:49:06,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676159930] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:49:06,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:49:06,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-12-13 15:49:06,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459005335] [2022-12-13 15:49:06,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:49:06,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 15:49:06,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:06,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 15:49:06,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=326, Unknown=8, NotChecked=0, Total=420 [2022-12-13 15:49:07,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 695 [2022-12-13 15:49:07,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 384 flow. Second operand has 21 states, 21 states have (on average 255.28571428571428) internal successors, (5361), 21 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:07,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:49:07,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 695 [2022-12-13 15:49:07,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:49:09,232 INFO L130 PetriNetUnfolder]: 9302/15517 cut-off events. [2022-12-13 15:49:09,232 INFO L131 PetriNetUnfolder]: For 6075/6075 co-relation queries the response was YES. [2022-12-13 15:49:09,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40336 conditions, 15517 events. 9302/15517 cut-off events. For 6075/6075 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 113850 event pairs, 3050 based on Foata normal form. 0/10357 useless extension candidates. Maximal degree in co-relation 40307. Up to 6482 conditions per place. [2022-12-13 15:49:09,323 INFO L137 encePairwiseOnDemand]: 686/695 looper letters, 94 selfloop transitions, 18 changer transitions 5/117 dead transitions. [2022-12-13 15:49:09,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 824 flow [2022-12-13 15:49:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:49:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:49:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1855 transitions. [2022-12-13 15:49:09,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.381294964028777 [2022-12-13 15:49:09,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1855 transitions. [2022-12-13 15:49:09,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1855 transitions. [2022-12-13 15:49:09,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:49:09,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1855 transitions. [2022-12-13 15:49:09,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:09,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 695.0) internal successors, (5560), 8 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:09,332 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 695.0) internal successors, (5560), 8 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:09,332 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 384 flow. Second operand 7 states and 1855 transitions. [2022-12-13 15:49:09,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 824 flow [2022-12-13 15:49:09,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 117 transitions, 768 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-12-13 15:49:09,511 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 409 flow [2022-12-13 15:49:09,511 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=409, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2022-12-13 15:49:09,511 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2022-12-13 15:49:09,511 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 409 flow [2022-12-13 15:49:09,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 255.28571428571428) internal successors, (5361), 21 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:09,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:49:09,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:09,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:49:09,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 15:49:09,713 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:49:09,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:09,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1421309628, now seen corresponding path program 1 times [2022-12-13 15:49:09,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:09,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623385249] [2022-12-13 15:49:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:09,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:49:10,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:10,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623385249] [2022-12-13 15:49:10,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623385249] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:49:10,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019444441] [2022-12-13 15:49:10,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:10,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:10,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:10,064 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:10,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:49:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:10,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 15:49:10,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:10,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:10,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:10,169 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:49:10,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-13 15:49:10,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:49:10,245 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 15:49:10,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 15:49:10,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:49:10,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:10,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:49:10,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:10,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:49:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:49:10,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:10,442 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_409 (Array Int Int)) (v_ArrVal_408 (Array Int Int))) (< 0 (+ 4294967296 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_408) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_409) c_~a1~0.base) c_~a1~0.offset)))) is different from false [2022-12-13 15:49:10,526 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:10,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-12-13 15:49:10,536 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:10,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 273 [2022-12-13 15:49:10,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 250 [2022-12-13 15:49:10,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 122 [2022-12-13 15:49:10,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 230 [2022-12-13 15:49:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 15:49:10,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019444441] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:49:10,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:49:10,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-12-13 15:49:10,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092866877] [2022-12-13 15:49:10,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:49:10,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 15:49:10,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:10,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 15:49:10,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=297, Unknown=7, NotChecked=36, Total=420 [2022-12-13 15:49:10,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 695 [2022-12-13 15:49:10,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 409 flow. Second operand has 21 states, 21 states have (on average 249.28571428571428) internal successors, (5235), 21 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:10,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:49:10,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 695 [2022-12-13 15:49:10,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:49:12,817 INFO L130 PetriNetUnfolder]: 8622/14397 cut-off events. [2022-12-13 15:49:12,817 INFO L131 PetriNetUnfolder]: For 6858/6858 co-relation queries the response was YES. [2022-12-13 15:49:12,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38894 conditions, 14397 events. 8622/14397 cut-off events. For 6858/6858 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 104507 event pairs, 3050 based on Foata normal form. 0/9777 useless extension candidates. Maximal degree in co-relation 38866. Up to 6482 conditions per place. [2022-12-13 15:49:12,891 INFO L137 encePairwiseOnDemand]: 686/695 looper letters, 93 selfloop transitions, 18 changer transitions 5/116 dead transitions. [2022-12-13 15:49:12,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 116 transitions, 823 flow [2022-12-13 15:49:12,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:49:12,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:49:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1812 transitions. [2022-12-13 15:49:12,894 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3724563206577595 [2022-12-13 15:49:12,895 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1812 transitions. [2022-12-13 15:49:12,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1812 transitions. [2022-12-13 15:49:12,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:49:12,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1812 transitions. [2022-12-13 15:49:12,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 258.85714285714283) internal successors, (1812), 7 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:12,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 695.0) internal successors, (5560), 8 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:12,900 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 695.0) internal successors, (5560), 8 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:12,900 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 409 flow. Second operand 7 states and 1812 transitions. [2022-12-13 15:49:12,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 116 transitions, 823 flow [2022-12-13 15:49:12,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 116 transitions, 813 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-13 15:49:12,921 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 431 flow [2022-12-13 15:49:12,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=431, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2022-12-13 15:49:12,921 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2022-12-13 15:49:12,921 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 431 flow [2022-12-13 15:49:12,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 249.28571428571428) internal successors, (5235), 21 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:12,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:49:12,922 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:12,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:49:13,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 15:49:13,124 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:49:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1421309630, now seen corresponding path program 1 times [2022-12-13 15:49:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:13,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697250409] [2022-12-13 15:49:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:13,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:13,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:13,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697250409] [2022-12-13 15:49:13,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697250409] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:49:13,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199178353] [2022-12-13 15:49:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:13,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:13,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:13,369 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:13,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 15:49:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:13,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 15:49:13,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:13,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:49:13,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:13,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:49:13,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:13,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:49:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:13,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:13,748 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_451 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_451))) (let ((.cse1 (select (select .cse0 ~a1~0.base) ~a1~0.offset))) (or (<= (select (select .cse0 c_~a2~0.base) c_~a2~0.offset) (+ .cse1 2147483647)) (not (<= .cse1 9223372039002259455)) (not (<= 0 .cse1)))))) is different from false [2022-12-13 15:49:13,770 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_450 (Array Int Int)) (v_ArrVal_451 (Array Int Int)) (~a1~0.base Int) (~a1~0.offset Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_450) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_451))) (let ((.cse0 (select (select .cse1 ~a1~0.base) ~a1~0.offset))) (or (not (<= .cse0 9223372039002259455)) (not (<= 0 .cse0)) (<= (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ 2147483647 .cse0)))))) is different from false [2022-12-13 15:49:13,782 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:13,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 66 [2022-12-13 15:49:13,820 INFO L321 Elim1Store]: treesize reduction 4, result has 89.2 percent of original size [2022-12-13 15:49:13,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1525 treesize of output 1405 [2022-12-13 15:49:13,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:13,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1370 treesize of output 1234 [2022-12-13 15:49:13,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:13,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1226 treesize of output 1162 [2022-12-13 15:49:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-12-13 15:49:33,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199178353] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:49:33,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:49:33,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-12-13 15:49:33,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858158892] [2022-12-13 15:49:33,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:49:33,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 15:49:33,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:33,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 15:49:33,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=171, Unknown=2, NotChecked=54, Total=272 [2022-12-13 15:49:33,382 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 695 [2022-12-13 15:49:33,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 431 flow. Second operand has 17 states, 17 states have (on average 257.47058823529414) internal successors, (4377), 17 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:33,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:49:33,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 695 [2022-12-13 15:49:33,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:49:35,181 INFO L130 PetriNetUnfolder]: 7942/13277 cut-off events. [2022-12-13 15:49:35,181 INFO L131 PetriNetUnfolder]: For 8651/8651 co-relation queries the response was YES. [2022-12-13 15:49:35,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37424 conditions, 13277 events. 7942/13277 cut-off events. For 8651/8651 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 95251 event pairs, 4290 based on Foata normal form. 0/9757 useless extension candidates. Maximal degree in co-relation 37397. Up to 8750 conditions per place. [2022-12-13 15:49:35,247 INFO L137 encePairwiseOnDemand]: 686/695 looper letters, 81 selfloop transitions, 18 changer transitions 0/99 dead transitions. [2022-12-13 15:49:35,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 99 transitions, 715 flow [2022-12-13 15:49:35,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:49:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:49:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1861 transitions. [2022-12-13 15:49:35,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38252826310380267 [2022-12-13 15:49:35,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1861 transitions. [2022-12-13 15:49:35,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1861 transitions. [2022-12-13 15:49:35,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:49:35,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1861 transitions. [2022-12-13 15:49:35,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 265.85714285714283) internal successors, (1861), 7 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:35,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 695.0) internal successors, (5560), 8 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:35,257 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 695.0) internal successors, (5560), 8 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:35,257 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 431 flow. Second operand 7 states and 1861 transitions. [2022-12-13 15:49:35,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 99 transitions, 715 flow [2022-12-13 15:49:35,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 99 transitions, 693 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-13 15:49:35,270 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 441 flow [2022-12-13 15:49:35,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=441, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2022-12-13 15:49:35,271 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 33 predicate places. [2022-12-13 15:49:35,271 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 441 flow [2022-12-13 15:49:35,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 257.47058823529414) internal successors, (4377), 17 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:35,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:49:35,271 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:35,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 15:49:35,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:35,473 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:49:35,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:35,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1421309629, now seen corresponding path program 1 times [2022-12-13 15:49:35,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:35,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844707535] [2022-12-13 15:49:35,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:35,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:35,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:35,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844707535] [2022-12-13 15:49:35,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844707535] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:49:35,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131149945] [2022-12-13 15:49:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:35,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:35,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:35,691 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:35,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 15:49:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:35,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 15:49:35,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:35,795 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-12-13 15:49:35,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 16 [2022-12-13 15:49:35,830 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 15:49:35,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:49:35,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:49:35,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:49:35,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:49:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:35,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:35,950 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_498 (Array Int Int)) (v_ArrVal_497 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_497) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_498) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) is different from false [2022-12-13 15:49:35,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:35,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-12-13 15:49:35,966 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:35,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 71 [2022-12-13 15:49:35,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-12-13 15:49:35,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-12-13 15:49:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-12-13 15:49:36,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131149945] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:49:36,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:49:36,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-12-13 15:49:36,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865364623] [2022-12-13 15:49:36,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:49:36,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 15:49:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:36,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 15:49:36,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=4, NotChecked=24, Total=210 [2022-12-13 15:49:36,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 695 [2022-12-13 15:49:36,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 441 flow. Second operand has 15 states, 15 states have (on average 254.53333333333333) internal successors, (3818), 15 states have internal predecessors, (3818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:36,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:49:36,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 695 [2022-12-13 15:49:36,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:49:37,626 INFO L130 PetriNetUnfolder]: 7262/12157 cut-off events. [2022-12-13 15:49:37,627 INFO L131 PetriNetUnfolder]: For 10020/10020 co-relation queries the response was YES. [2022-12-13 15:49:37,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34654 conditions, 12157 events. 7262/12157 cut-off events. For 10020/10020 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 85680 event pairs, 4290 based on Foata normal form. 440/9737 useless extension candidates. Maximal degree in co-relation 34628. Up to 8750 conditions per place. [2022-12-13 15:49:37,679 INFO L137 encePairwiseOnDemand]: 686/695 looper letters, 80 selfloop transitions, 18 changer transitions 0/98 dead transitions. [2022-12-13 15:49:37,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 723 flow [2022-12-13 15:49:37,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:49:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:49:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1839 transitions. [2022-12-13 15:49:37,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3780061664953751 [2022-12-13 15:49:37,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1839 transitions. [2022-12-13 15:49:37,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1839 transitions. [2022-12-13 15:49:37,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:49:37,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1839 transitions. [2022-12-13 15:49:37,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 262.7142857142857) internal successors, (1839), 7 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:37,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 695.0) internal successors, (5560), 8 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:37,687 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 695.0) internal successors, (5560), 8 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:37,688 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 441 flow. Second operand 7 states and 1839 transitions. [2022-12-13 15:49:37,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 723 flow [2022-12-13 15:49:37,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 98 transitions, 676 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-13 15:49:37,695 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 426 flow [2022-12-13 15:49:37,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=426, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2022-12-13 15:49:37,696 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 34 predicate places. [2022-12-13 15:49:37,696 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 426 flow [2022-12-13 15:49:37,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 254.53333333333333) internal successors, (3818), 15 states have internal predecessors, (3818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:37,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:49:37,696 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:37,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 15:49:37,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:37,898 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:49:37,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:37,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1110925867, now seen corresponding path program 1 times [2022-12-13 15:49:37,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:37,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506168447] [2022-12-13 15:49:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:37,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:37,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:37,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506168447] [2022-12-13 15:49:37,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506168447] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:49:37,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643013798] [2022-12-13 15:49:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:38,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:38,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:38,000 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:38,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 15:49:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:38,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 15:49:38,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:38,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:38,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2022-12-13 15:49:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:38,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643013798] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:49:38,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:49:38,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2022-12-13 15:49:38,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486557925] [2022-12-13 15:49:38,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:49:38,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:49:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:49:38,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:49:38,789 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 695 [2022-12-13 15:49:38,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 426 flow. Second operand has 16 states, 16 states have (on average 283.75) internal successors, (4540), 16 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:38,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:49:38,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 695 [2022-12-13 15:49:38,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:49:41,351 INFO L130 PetriNetUnfolder]: 10288/17585 cut-off events. [2022-12-13 15:49:41,351 INFO L131 PetriNetUnfolder]: For 18508/18508 co-relation queries the response was YES. [2022-12-13 15:49:41,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48393 conditions, 17585 events. 10288/17585 cut-off events. For 18508/18508 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 133658 event pairs, 6162 based on Foata normal form. 2420/15979 useless extension candidates. Maximal degree in co-relation 48369. Up to 10875 conditions per place. [2022-12-13 15:49:41,428 INFO L137 encePairwiseOnDemand]: 682/695 looper letters, 180 selfloop transitions, 29 changer transitions 36/245 dead transitions. [2022-12-13 15:49:41,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 245 transitions, 1513 flow [2022-12-13 15:49:41,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 15:49:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 15:49:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5860 transitions. [2022-12-13 15:49:41,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42158273381294964 [2022-12-13 15:49:41,433 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5860 transitions. [2022-12-13 15:49:41,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5860 transitions. [2022-12-13 15:49:41,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:49:41,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5860 transitions. [2022-12-13 15:49:41,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 293.0) internal successors, (5860), 20 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:41,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 695.0) internal successors, (14595), 21 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:41,448 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 695.0) internal successors, (14595), 21 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:41,448 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 426 flow. Second operand 20 states and 5860 transitions. [2022-12-13 15:49:41,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 245 transitions, 1513 flow [2022-12-13 15:49:41,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 245 transitions, 1471 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 15:49:41,468 INFO L231 Difference]: Finished difference. Result has 101 places, 76 transitions, 600 flow [2022-12-13 15:49:41,468 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=600, PETRI_PLACES=101, PETRI_TRANSITIONS=76} [2022-12-13 15:49:41,468 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 54 predicate places. [2022-12-13 15:49:41,469 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 76 transitions, 600 flow [2022-12-13 15:49:41,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 283.75) internal successors, (4540), 16 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:41,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:49:41,469 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:41,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 15:49:41,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:41,670 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:49:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1164785805, now seen corresponding path program 1 times [2022-12-13 15:49:41,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:41,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545033014] [2022-12-13 15:49:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:41,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:41,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:41,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545033014] [2022-12-13 15:49:41,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545033014] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:49:41,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618549393] [2022-12-13 15:49:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:41,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:41,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:41,791 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:41,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 15:49:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:41,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 15:49:41,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:41,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:41,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618549393] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:49:41,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:49:41,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2022-12-13 15:49:41,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073737929] [2022-12-13 15:49:41,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:49:41,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:49:41,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:41,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:49:41,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:49:42,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 695 [2022-12-13 15:49:42,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 76 transitions, 600 flow. Second operand has 16 states, 16 states have (on average 283.75) internal successors, (4540), 16 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:42,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:49:42,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 695 [2022-12-13 15:49:42,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:49:45,033 INFO L130 PetriNetUnfolder]: 8715/14978 cut-off events. [2022-12-13 15:49:45,034 INFO L131 PetriNetUnfolder]: For 35994/35994 co-relation queries the response was YES. [2022-12-13 15:49:45,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49449 conditions, 14978 events. 8715/14978 cut-off events. For 35994/35994 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 110723 event pairs, 5579 based on Foata normal form. 0/11744 useless extension candidates. Maximal degree in co-relation 49420. Up to 10875 conditions per place. [2022-12-13 15:49:45,135 INFO L137 encePairwiseOnDemand]: 685/695 looper letters, 118 selfloop transitions, 25 changer transitions 50/193 dead transitions. [2022-12-13 15:49:45,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 193 transitions, 1432 flow [2022-12-13 15:49:45,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 15:49:45,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 15:49:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5802 transitions. [2022-12-13 15:49:45,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41741007194244606 [2022-12-13 15:49:45,140 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5802 transitions. [2022-12-13 15:49:45,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5802 transitions. [2022-12-13 15:49:45,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:49:45,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5802 transitions. [2022-12-13 15:49:45,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 290.1) internal successors, (5802), 20 states have internal predecessors, (5802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:45,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 695.0) internal successors, (14595), 21 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:45,160 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 695.0) internal successors, (14595), 21 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:45,160 INFO L175 Difference]: Start difference. First operand has 101 places, 76 transitions, 600 flow. Second operand 20 states and 5802 transitions. [2022-12-13 15:49:45,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 193 transitions, 1432 flow [2022-12-13 15:49:45,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 193 transitions, 1381 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-12-13 15:49:45,397 INFO L231 Difference]: Finished difference. Result has 120 places, 79 transitions, 639 flow [2022-12-13 15:49:45,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=639, PETRI_PLACES=120, PETRI_TRANSITIONS=79} [2022-12-13 15:49:45,397 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 73 predicate places. [2022-12-13 15:49:45,398 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 79 transitions, 639 flow [2022-12-13 15:49:45,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 283.75) internal successors, (4540), 16 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:45,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:49:45,398 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:45,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 15:49:45,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:45,599 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:49:45,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1165058880, now seen corresponding path program 1 times [2022-12-13 15:49:45,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:45,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480719154] [2022-12-13 15:49:45,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:45,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:49:45,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:45,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480719154] [2022-12-13 15:49:45,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480719154] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:49:45,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067770152] [2022-12-13 15:49:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:45,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:45,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:45,930 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:45,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 15:49:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:46,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 15:49:46,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:46,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:46,035 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 15:49:46,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2022-12-13 15:49:46,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:49:46,084 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 15:49:46,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 15:49:46,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:49:46,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:46,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:49:46,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 15:49:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:49:46,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:46,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:46,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-12-13 15:49:46,296 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:46,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 71 [2022-12-13 15:49:46,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-12-13 15:49:46,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-12-13 15:49:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:49:46,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067770152] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:49:46,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:49:46,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-12-13 15:49:46,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292665380] [2022-12-13 15:49:46,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:49:46,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 15:49:46,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:46,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 15:49:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=301, Unknown=11, NotChecked=0, Total=380 [2022-12-13 15:49:46,563 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 695 [2022-12-13 15:49:46,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 79 transitions, 639 flow. Second operand has 20 states, 20 states have (on average 254.4) internal successors, (5088), 20 states have internal predecessors, (5088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:46,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:49:46,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 695 [2022-12-13 15:49:46,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:49:48,951 INFO L130 PetriNetUnfolder]: 9986/17073 cut-off events. [2022-12-13 15:49:48,951 INFO L131 PetriNetUnfolder]: For 44197/44197 co-relation queries the response was YES. [2022-12-13 15:49:49,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59378 conditions, 17073 events. 9986/17073 cut-off events. For 44197/44197 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 128510 event pairs, 6486 based on Foata normal form. 0/13385 useless extension candidates. Maximal degree in co-relation 59344. Up to 12739 conditions per place. [2022-12-13 15:49:49,051 INFO L137 encePairwiseOnDemand]: 685/695 looper letters, 128 selfloop transitions, 27 changer transitions 4/159 dead transitions. [2022-12-13 15:49:49,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 159 transitions, 1502 flow [2022-12-13 15:49:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:49:49,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:49:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2619 transitions. [2022-12-13 15:49:49,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3768345323741007 [2022-12-13 15:49:49,055 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2619 transitions. [2022-12-13 15:49:49,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2619 transitions. [2022-12-13 15:49:49,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:49:49,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2619 transitions. [2022-12-13 15:49:49,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 261.9) internal successors, (2619), 10 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:49,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 695.0) internal successors, (7645), 11 states have internal predecessors, (7645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:49,062 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 695.0) internal successors, (7645), 11 states have internal predecessors, (7645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:49,062 INFO L175 Difference]: Start difference. First operand has 120 places, 79 transitions, 639 flow. Second operand 10 states and 2619 transitions. [2022-12-13 15:49:49,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 159 transitions, 1502 flow [2022-12-13 15:49:49,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 159 transitions, 1447 flow, removed 13 selfloop flow, removed 10 redundant places. [2022-12-13 15:49:49,293 INFO L231 Difference]: Finished difference. Result has 120 places, 92 transitions, 777 flow [2022-12-13 15:49:49,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=777, PETRI_PLACES=120, PETRI_TRANSITIONS=92} [2022-12-13 15:49:49,294 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 73 predicate places. [2022-12-13 15:49:49,294 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 92 transitions, 777 flow [2022-12-13 15:49:49,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 254.4) internal successors, (5088), 20 states have internal predecessors, (5088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:49,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:49:49,294 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:49,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 15:49:49,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:49,495 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:49:49,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:49,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1165058878, now seen corresponding path program 1 times [2022-12-13 15:49:49,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:49,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523162065] [2022-12-13 15:49:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:49,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:49,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:49,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523162065] [2022-12-13 15:49:49,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523162065] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:49:49,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914679736] [2022-12-13 15:49:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:49,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:49,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:49,652 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:49,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 15:49:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:49,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 15:49:49,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:49,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:49:49,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:49,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:49:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:49,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:49,851 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:49,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-12-13 15:49:49,857 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:49,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 37 [2022-12-13 15:49:49,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-12-13 15:49:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:49,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914679736] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:49:49,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:49:49,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-12-13 15:49:49,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68060663] [2022-12-13 15:49:49,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:49:49,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:49:49,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:49,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:49:49,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=142, Unknown=4, NotChecked=0, Total=182 [2022-12-13 15:49:50,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 695 [2022-12-13 15:49:50,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 92 transitions, 777 flow. Second operand has 14 states, 14 states have (on average 287.7857142857143) internal successors, (4029), 14 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:50,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:49:50,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 695 [2022-12-13 15:49:50,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:49:53,602 INFO L130 PetriNetUnfolder]: 11143/20345 cut-off events. [2022-12-13 15:49:53,602 INFO L131 PetriNetUnfolder]: For 63101/63101 co-relation queries the response was YES. [2022-12-13 15:49:53,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76818 conditions, 20345 events. 11143/20345 cut-off events. For 63101/63101 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 173451 event pairs, 5697 based on Foata normal form. 0/18191 useless extension candidates. Maximal degree in co-relation 76781. Up to 12401 conditions per place. [2022-12-13 15:49:53,706 INFO L137 encePairwiseOnDemand]: 682/695 looper letters, 89 selfloop transitions, 38 changer transitions 0/127 dead transitions. [2022-12-13 15:49:53,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 127 transitions, 1253 flow [2022-12-13 15:49:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:49:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 15:49:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2644 transitions. [2022-12-13 15:49:53,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42270183852917664 [2022-12-13 15:49:53,709 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2644 transitions. [2022-12-13 15:49:53,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2644 transitions. [2022-12-13 15:49:53,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:49:53,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2644 transitions. [2022-12-13 15:49:53,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 293.77777777777777) internal successors, (2644), 9 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:53,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 695.0) internal successors, (6950), 10 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:53,715 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 695.0) internal successors, (6950), 10 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:53,715 INFO L175 Difference]: Start difference. First operand has 120 places, 92 transitions, 777 flow. Second operand 9 states and 2644 transitions. [2022-12-13 15:49:53,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 127 transitions, 1253 flow [2022-12-13 15:49:54,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 127 transitions, 1235 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 15:49:54,002 INFO L231 Difference]: Finished difference. Result has 128 places, 98 transitions, 887 flow [2022-12-13 15:49:54,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=887, PETRI_PLACES=128, PETRI_TRANSITIONS=98} [2022-12-13 15:49:54,003 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 81 predicate places. [2022-12-13 15:49:54,003 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 98 transitions, 887 flow [2022-12-13 15:49:54,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 287.7857142857143) internal successors, (4029), 14 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:54,003 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:49:54,003 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:54,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 15:49:54,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 15:49:54,205 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:49:54,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:54,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1165058935, now seen corresponding path program 1 times [2022-12-13 15:49:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:54,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472316028] [2022-12-13 15:49:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:54,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472316028] [2022-12-13 15:49:54,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472316028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:49:54,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632818995] [2022-12-13 15:49:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:54,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:54,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:54,397 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:54,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 15:49:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:54,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 15:49:54,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:54,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:49:54,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:54,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:49:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:54,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:54,625 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:54,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-12-13 15:49:54,631 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:54,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 31 [2022-12-13 15:49:54,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 15:49:54,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:49:54,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632818995] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:49:54,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:49:54,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-12-13 15:49:54,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586445410] [2022-12-13 15:49:54,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:49:54,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:49:54,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:49:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:49:54,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=144, Unknown=2, NotChecked=0, Total=182 [2022-12-13 15:49:55,122 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 695 [2022-12-13 15:49:55,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 98 transitions, 887 flow. Second operand has 14 states, 14 states have (on average 268.7857142857143) internal successors, (3763), 14 states have internal predecessors, (3763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:55,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:49:55,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 695 [2022-12-13 15:49:55,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:49:58,133 INFO L130 PetriNetUnfolder]: 11090/20151 cut-off events. [2022-12-13 15:49:58,133 INFO L131 PetriNetUnfolder]: For 69023/69023 co-relation queries the response was YES. [2022-12-13 15:49:58,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83351 conditions, 20151 events. 11090/20151 cut-off events. For 69023/69023 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 170488 event pairs, 5653 based on Foata normal form. 20/18835 useless extension candidates. Maximal degree in co-relation 83311. Up to 12227 conditions per place. [2022-12-13 15:49:58,265 INFO L137 encePairwiseOnDemand]: 682/695 looper letters, 88 selfloop transitions, 40 changer transitions 0/128 dead transitions. [2022-12-13 15:49:58,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 128 transitions, 1353 flow [2022-12-13 15:49:58,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:49:58,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 15:49:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2472 transitions. [2022-12-13 15:49:58,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39520383693045563 [2022-12-13 15:49:58,268 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2472 transitions. [2022-12-13 15:49:58,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2472 transitions. [2022-12-13 15:49:58,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:49:58,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2472 transitions. [2022-12-13 15:49:58,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 274.6666666666667) internal successors, (2472), 9 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:58,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 695.0) internal successors, (6950), 10 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:58,274 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 695.0) internal successors, (6950), 10 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:58,274 INFO L175 Difference]: Start difference. First operand has 128 places, 98 transitions, 887 flow. Second operand 9 states and 2472 transitions. [2022-12-13 15:49:58,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 128 transitions, 1353 flow [2022-12-13 15:49:58,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 1298 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-13 15:49:58,830 INFO L231 Difference]: Finished difference. Result has 131 places, 100 transitions, 930 flow [2022-12-13 15:49:58,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=930, PETRI_PLACES=131, PETRI_TRANSITIONS=100} [2022-12-13 15:49:58,830 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 84 predicate places. [2022-12-13 15:49:58,830 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 100 transitions, 930 flow [2022-12-13 15:49:58,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 268.7857142857143) internal successors, (3763), 14 states have internal predecessors, (3763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:49:58,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:49:58,831 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:49:58,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 15:49:59,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 15:49:59,033 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:49:59,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:49:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1165058881, now seen corresponding path program 1 times [2022-12-13 15:49:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:49:59,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596323099] [2022-12-13 15:49:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:59,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:49:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:49:59,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:49:59,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596323099] [2022-12-13 15:49:59,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596323099] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:49:59,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780985606] [2022-12-13 15:49:59,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:49:59,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:49:59,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:49:59,316 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:49:59,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 15:49:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:49:59,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 15:49:59,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:49:59,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:59,431 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 15:49:59,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2022-12-13 15:49:59,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:49:59,482 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 15:49:59,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 15:49:59,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:49:59,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:49:59,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:49:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:49:59,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:49:59,823 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_726 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_726))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (not (<= .cse0 0)) (< (select (select .cse1 c_~a1~0.base) c_~a1~0.offset) (+ .cse0 2147483648)) (not (<= 0 .cse0)))))) (forall ((~a2~0.offset Int) (v_ArrVal_726 (Array Int Int)) (~a2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_726))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (<= .cse2 0) (< 9223372039002259455 .cse2) (< (select (select .cse3 c_~a1~0.base) c_~a1~0.offset) (+ .cse2 2147483648))))))) is different from false [2022-12-13 15:49:59,860 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_726 (Array Int Int)) (v_ArrVal_725 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_725) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_726))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (not (<= 0 .cse0)) (not (<= .cse0 0)) (< (select (select .cse1 c_~a1~0.base) c_~a1~0.offset) (+ .cse0 2147483648)))))) (forall ((~a2~0.offset Int) (v_ArrVal_726 (Array Int Int)) (v_ArrVal_725 (Array Int Int)) (~a2~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_725) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_726))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (<= .cse2 0) (< 9223372039002259455 .cse2) (< (select (select .cse3 c_~a1~0.base) c_~a1~0.offset) (+ .cse2 2147483648))))))) is different from false [2022-12-13 15:49:59,970 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:49:59,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 132 [2022-12-13 15:50:00,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:00,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2395 treesize of output 2236 [2022-12-13 15:50:00,064 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:00,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2159 treesize of output 2088 [2022-12-13 15:50:00,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:00,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2079 treesize of output 2048 [2022-12-13 15:50:00,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:00,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2039 treesize of output 1976 [2022-12-13 15:50:00,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:00,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1967 treesize of output 1832 [2022-12-13 15:50:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 15:50:28,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780985606] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:50:28,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:50:28,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-12-13 15:50:28,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759037820] [2022-12-13 15:50:28,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:50:28,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 15:50:28,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 15:50:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=283, Unknown=2, NotChecked=70, Total=420 [2022-12-13 15:50:28,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 695 [2022-12-13 15:50:28,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 100 transitions, 930 flow. Second operand has 21 states, 21 states have (on average 254.38095238095238) internal successors, (5342), 21 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:28,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:28,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 695 [2022-12-13 15:50:28,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:31,995 INFO L130 PetriNetUnfolder]: 10514/18935 cut-off events. [2022-12-13 15:50:31,995 INFO L131 PetriNetUnfolder]: For 60988/60988 co-relation queries the response was YES. [2022-12-13 15:50:32,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79646 conditions, 18935 events. 10514/18935 cut-off events. For 60988/60988 co-relation queries the response was YES. Maximal size of possible extension queue 891. Compared 155101 event pairs, 8383 based on Foata normal form. 330/17965 useless extension candidates. Maximal degree in co-relation 79607. Up to 15473 conditions per place. [2022-12-13 15:50:32,081 INFO L137 encePairwiseOnDemand]: 685/695 looper letters, 124 selfloop transitions, 31 changer transitions 3/158 dead transitions. [2022-12-13 15:50:32,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 158 transitions, 1703 flow [2022-12-13 15:50:32,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:50:32,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:50:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2614 transitions. [2022-12-13 15:50:32,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3761151079136691 [2022-12-13 15:50:32,084 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2614 transitions. [2022-12-13 15:50:32,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2614 transitions. [2022-12-13 15:50:32,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:32,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2614 transitions. [2022-12-13 15:50:32,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 261.4) internal successors, (2614), 10 states have internal predecessors, (2614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:32,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 695.0) internal successors, (7645), 11 states have internal predecessors, (7645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:32,090 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 695.0) internal successors, (7645), 11 states have internal predecessors, (7645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:32,090 INFO L175 Difference]: Start difference. First operand has 131 places, 100 transitions, 930 flow. Second operand 10 states and 2614 transitions. [2022-12-13 15:50:32,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 158 transitions, 1703 flow [2022-12-13 15:50:32,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 158 transitions, 1624 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-12-13 15:50:32,366 INFO L231 Difference]: Finished difference. Result has 133 places, 99 transitions, 910 flow [2022-12-13 15:50:32,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=910, PETRI_PLACES=133, PETRI_TRANSITIONS=99} [2022-12-13 15:50:32,366 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 86 predicate places. [2022-12-13 15:50:32,366 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 99 transitions, 910 flow [2022-12-13 15:50:32,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 254.38095238095238) internal successors, (5342), 21 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:32,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:32,367 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:32,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 15:50:32,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 15:50:32,568 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:50:32,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:32,569 INFO L85 PathProgramCache]: Analyzing trace with hash 117947078, now seen corresponding path program 1 times [2022-12-13 15:50:32,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:32,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008236624] [2022-12-13 15:50:32,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:32,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:50:32,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:32,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008236624] [2022-12-13 15:50:32,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008236624] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:50:32,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333138449] [2022-12-13 15:50:32,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:32,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:50:32,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:50:32,811 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:50:32,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 15:50:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:32,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 15:50:32,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:50:32,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:50:32,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:50:32,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:50:32,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:50:32,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:50:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:50:33,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:50:33,125 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:33,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2022-12-13 15:50:33,132 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:33,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 119 [2022-12-13 15:50:33,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2022-12-13 15:50:33,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2022-12-13 15:50:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:50:33,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333138449] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:50:33,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:50:33,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-12-13 15:50:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645081719] [2022-12-13 15:50:33,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:50:33,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 15:50:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:33,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 15:50:33,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=217, Unknown=5, NotChecked=0, Total=272 [2022-12-13 15:50:34,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 695 [2022-12-13 15:50:34,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 99 transitions, 910 flow. Second operand has 17 states, 17 states have (on average 266.70588235294116) internal successors, (4534), 17 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:34,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:34,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 695 [2022-12-13 15:50:34,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:37,070 INFO L130 PetriNetUnfolder]: 9918/18088 cut-off events. [2022-12-13 15:50:37,071 INFO L131 PetriNetUnfolder]: For 70933/70933 co-relation queries the response was YES. [2022-12-13 15:50:37,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73957 conditions, 18088 events. 9918/18088 cut-off events. For 70933/70933 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 151150 event pairs, 3098 based on Foata normal form. 620/17916 useless extension candidates. Maximal degree in co-relation 73921. Up to 9497 conditions per place. [2022-12-13 15:50:37,169 INFO L137 encePairwiseOnDemand]: 683/695 looper letters, 103 selfloop transitions, 36 changer transitions 0/139 dead transitions. [2022-12-13 15:50:37,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 139 transitions, 1495 flow [2022-12-13 15:50:37,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:50:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:50:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1926 transitions. [2022-12-13 15:50:37,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3958890030832477 [2022-12-13 15:50:37,172 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1926 transitions. [2022-12-13 15:50:37,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1926 transitions. [2022-12-13 15:50:37,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:37,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1926 transitions. [2022-12-13 15:50:37,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.14285714285717) internal successors, (1926), 7 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:37,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 695.0) internal successors, (5560), 8 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:37,176 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 695.0) internal successors, (5560), 8 states have internal predecessors, (5560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:37,177 INFO L175 Difference]: Start difference. First operand has 133 places, 99 transitions, 910 flow. Second operand 7 states and 1926 transitions. [2022-12-13 15:50:37,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 139 transitions, 1495 flow [2022-12-13 15:50:37,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 139 transitions, 1468 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 15:50:37,485 INFO L231 Difference]: Finished difference. Result has 136 places, 103 transitions, 1026 flow [2022-12-13 15:50:37,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1026, PETRI_PLACES=136, PETRI_TRANSITIONS=103} [2022-12-13 15:50:37,485 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 89 predicate places. [2022-12-13 15:50:37,485 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 103 transitions, 1026 flow [2022-12-13 15:50:37,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 266.70588235294116) internal successors, (4534), 17 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:37,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:37,486 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:37,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 15:50:37,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 15:50:37,687 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:50:37,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:37,688 INFO L85 PathProgramCache]: Analyzing trace with hash 117947133, now seen corresponding path program 1 times [2022-12-13 15:50:37,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:37,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72230173] [2022-12-13 15:50:37,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:37,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:50:37,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:37,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72230173] [2022-12-13 15:50:37,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72230173] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:50:37,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531951760] [2022-12-13 15:50:37,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:37,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:50:37,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:50:37,973 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:50:37,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 15:50:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:38,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 15:50:38,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:50:38,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:50:38,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:50:38,071 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:50:38,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-13 15:50:38,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:50:38,132 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 15:50:38,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 15:50:38,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:50:38,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:50:38,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:50:38,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:50:38,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:50:38,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 15:50:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:50:38,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:50:38,301 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_814 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_814) c_~a1~0.base) c_~a1~0.offset)))) is different from false [2022-12-13 15:50:38,308 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_814 (Array Int Int)) (v_ArrVal_813 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_813) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_814) c_~a1~0.base) c_~a1~0.offset)))) is different from false [2022-12-13 15:50:38,314 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_812 (Array Int Int)) (v_ArrVal_814 (Array Int Int)) (v_ArrVal_813 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_812) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_813) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_814) c_~a1~0.base) c_~a1~0.offset)))) is different from false [2022-12-13 15:50:38,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:38,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-12-13 15:50:38,362 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:38,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 273 [2022-12-13 15:50:38,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 242 [2022-12-13 15:50:38,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 242 treesize of output 234 [2022-12-13 15:50:38,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 114 [2022-12-13 15:50:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 15:50:38,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531951760] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:50:38,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:50:38,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-12-13 15:50:38,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218825532] [2022-12-13 15:50:38,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:50:38,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 15:50:38,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:38,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 15:50:38,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=311, Unknown=3, NotChecked=114, Total=506 [2022-12-13 15:50:38,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 695 [2022-12-13 15:50:38,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 103 transitions, 1026 flow. Second operand has 23 states, 23 states have (on average 253.3913043478261) internal successors, (5828), 23 states have internal predecessors, (5828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:38,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:38,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 695 [2022-12-13 15:50:38,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:41,514 INFO L130 PetriNetUnfolder]: 9485/17345 cut-off events. [2022-12-13 15:50:41,514 INFO L131 PetriNetUnfolder]: For 79638/79638 co-relation queries the response was YES. [2022-12-13 15:50:41,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74402 conditions, 17345 events. 9485/17345 cut-off events. For 79638/79638 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 144498 event pairs, 4043 based on Foata normal form. 310/16881 useless extension candidates. Maximal degree in co-relation 74363. Up to 7781 conditions per place. [2022-12-13 15:50:41,662 INFO L137 encePairwiseOnDemand]: 686/695 looper letters, 134 selfloop transitions, 30 changer transitions 3/167 dead transitions. [2022-12-13 15:50:41,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 167 transitions, 1891 flow [2022-12-13 15:50:41,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:50:41,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:50:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2098 transitions. [2022-12-13 15:50:41,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3773381294964029 [2022-12-13 15:50:41,665 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2098 transitions. [2022-12-13 15:50:41,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2098 transitions. [2022-12-13 15:50:41,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:41,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2098 transitions. [2022-12-13 15:50:41,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 262.25) internal successors, (2098), 8 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:41,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 695.0) internal successors, (6255), 9 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:41,673 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 695.0) internal successors, (6255), 9 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:41,673 INFO L175 Difference]: Start difference. First operand has 136 places, 103 transitions, 1026 flow. Second operand 8 states and 2098 transitions. [2022-12-13 15:50:41,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 167 transitions, 1891 flow [2022-12-13 15:50:41,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 167 transitions, 1842 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 15:50:41,924 INFO L231 Difference]: Finished difference. Result has 140 places, 103 transitions, 1048 flow [2022-12-13 15:50:41,924 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1048, PETRI_PLACES=140, PETRI_TRANSITIONS=103} [2022-12-13 15:50:41,925 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 93 predicate places. [2022-12-13 15:50:41,925 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 103 transitions, 1048 flow [2022-12-13 15:50:41,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 253.3913043478261) internal successors, (5828), 23 states have internal predecessors, (5828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:41,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:41,925 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:41,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 15:50:42,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:50:42,127 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:50:42,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash 117947135, now seen corresponding path program 1 times [2022-12-13 15:50:42,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:42,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081716134] [2022-12-13 15:50:42,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:42,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:50:42,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:42,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081716134] [2022-12-13 15:50:42,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081716134] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:50:42,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48467575] [2022-12-13 15:50:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:42,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:50:42,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:50:42,322 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:50:42,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 15:50:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:42,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 15:50:42,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:50:42,421 INFO L321 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2022-12-13 15:50:42,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 23 [2022-12-13 15:50:42,449 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 15:50:42,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 15:50:42,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:50:42,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:50:42,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:50:42,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 15:50:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:50:42,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:50:42,553 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_859 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_859) c_~a2~0.base) c_~a2~0.offset) 4294967296))) is different from false [2022-12-13 15:50:42,587 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:42,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-12-13 15:50:42,593 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:42,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 137 [2022-12-13 15:50:42,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2022-12-13 15:50:42,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2022-12-13 15:50:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:50:42,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48467575] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:50:42,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:50:42,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-12-13 15:50:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628231426] [2022-12-13 15:50:42,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:50:42,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 15:50:42,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:50:42,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 15:50:42,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=196, Unknown=3, NotChecked=28, Total=272 [2022-12-13 15:50:42,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 695 [2022-12-13 15:50:42,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 103 transitions, 1048 flow. Second operand has 17 states, 17 states have (on average 254.7058823529412) internal successors, (4330), 17 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:42,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:50:42,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 695 [2022-12-13 15:50:42,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:50:45,423 INFO L130 PetriNetUnfolder]: 8619/15859 cut-off events. [2022-12-13 15:50:45,424 INFO L131 PetriNetUnfolder]: For 80026/80026 co-relation queries the response was YES. [2022-12-13 15:50:45,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70175 conditions, 15859 events. 8619/15859 cut-off events. For 80026/80026 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 131024 event pairs, 2818 based on Foata normal form. 620/15741 useless extension candidates. Maximal degree in co-relation 70135. Up to 7268 conditions per place. [2022-12-13 15:50:45,489 INFO L137 encePairwiseOnDemand]: 682/695 looper letters, 101 selfloop transitions, 37 changer transitions 0/138 dead transitions. [2022-12-13 15:50:45,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 138 transitions, 1602 flow [2022-12-13 15:50:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:50:45,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:50:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2095 transitions. [2022-12-13 15:50:45,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3767985611510791 [2022-12-13 15:50:45,492 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2095 transitions. [2022-12-13 15:50:45,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2095 transitions. [2022-12-13 15:50:45,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:50:45,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2095 transitions. [2022-12-13 15:50:45,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 261.875) internal successors, (2095), 8 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:45,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 695.0) internal successors, (6255), 9 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:45,496 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 695.0) internal successors, (6255), 9 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:45,496 INFO L175 Difference]: Start difference. First operand has 140 places, 103 transitions, 1048 flow. Second operand 8 states and 2095 transitions. [2022-12-13 15:50:45,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 138 transitions, 1602 flow [2022-12-13 15:50:45,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 138 transitions, 1569 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-13 15:50:45,681 INFO L231 Difference]: Finished difference. Result has 143 places, 103 transitions, 1104 flow [2022-12-13 15:50:45,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=695, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1104, PETRI_PLACES=143, PETRI_TRANSITIONS=103} [2022-12-13 15:50:45,682 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 96 predicate places. [2022-12-13 15:50:45,682 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 103 transitions, 1104 flow [2022-12-13 15:50:45,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 254.7058823529412) internal successors, (4330), 17 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:50:45,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:50:45,683 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:50:45,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 15:50:45,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 15:50:45,884 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-12-13 15:50:45,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:50:45,885 INFO L85 PathProgramCache]: Analyzing trace with hash 117947132, now seen corresponding path program 1 times [2022-12-13 15:50:45,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:50:45,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422300579] [2022-12-13 15:50:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:45,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:50:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:50:46,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:50:46,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422300579] [2022-12-13 15:50:46,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422300579] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:50:46,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563359471] [2022-12-13 15:50:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:50:46,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:50:46,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:50:46,186 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:50:46,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a63325-8e21-4c9f-8224-62a5871ac89a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 15:50:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:50:46,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 15:50:46,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:50:46,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:50:46,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:50:46,305 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 15:50:46,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2022-12-13 15:50:46,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 15:50:46,354 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 15:50:46,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 15:50:46,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:50:46,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:50:46,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:50:46,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 15:50:46,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 15:50:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:50:46,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:50:46,686 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_905 (Array Int Int)) (~a2~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_905))) (let ((.cse1 (select (select .cse0 ~a2~0.base) ~a2~0.offset))) (or (< (select (select .cse0 c_~a1~0.base) c_~a1~0.offset) (+ .cse1 2147483648)) (<= .cse1 0) (< 9223372039002259455 .cse1))))) (forall ((~a2~0.offset Int) (v_ArrVal_905 (Array Int Int)) (~a2~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_905))) (let ((.cse3 (select (select .cse2 ~a2~0.base) ~a2~0.offset))) (or (< (select (select .cse2 c_~a1~0.base) c_~a1~0.offset) (+ .cse3 2147483648)) (not (<= .cse3 0)) (not (<= 0 .cse3))))))) is different from false [2022-12-13 15:50:48,754 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_904 (Array Int Int)) (v_ArrVal_905 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_905))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (not (<= .cse0 0)) (< (select (select .cse1 c_~a1~0.base) c_~a1~0.offset) (+ .cse0 2147483648)) (not (<= 0 .cse0)))))) (forall ((~a2~0.offset Int) (v_ArrVal_904 (Array Int Int)) (v_ArrVal_905 (Array Int Int)) (~a2~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_905))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (<= .cse2 0) (< (select (select .cse3 c_~a1~0.base) c_~a1~0.offset) (+ .cse2 2147483648)) (< 9223372039002259455 .cse2)))))) is different from false [2022-12-13 15:50:48,783 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((~a2~0.offset Int) (v_ArrVal_904 (Array Int Int)) (v_ArrVal_903 (Array Int Int)) (v_ArrVal_905 (Array Int Int)) (~a2~0.base Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_903) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_905))) (let ((.cse0 (select (select .cse1 ~a2~0.base) ~a2~0.offset))) (or (<= .cse0 0) (< 9223372039002259455 .cse0) (< (select (select .cse1 c_~a1~0.base) c_~a1~0.offset) (+ .cse0 2147483648)))))) (forall ((~a2~0.offset Int) (v_ArrVal_904 (Array Int Int)) (v_ArrVal_903 (Array Int Int)) (v_ArrVal_905 (Array Int Int)) (~a2~0.base Int)) (let ((.cse3 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_903) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_904) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_905))) (let ((.cse2 (select (select .cse3 ~a2~0.base) ~a2~0.offset))) (or (not (<= 0 .cse2)) (not (<= .cse2 0)) (< (select (select .cse3 c_~a1~0.base) c_~a1~0.offset) (+ .cse2 2147483648))))))) is different from false [2022-12-13 15:50:48,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:48,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 239 treesize of output 156 [2022-12-13 15:50:48,955 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:48,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 10955 treesize of output 10476 [2022-12-13 15:50:49,035 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:49,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10399 treesize of output 10136 [2022-12-13 15:50:49,115 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:49,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10127 treesize of output 9592 [2022-12-13 15:50:49,194 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:49,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9583 treesize of output 9456 [2022-12-13 15:50:49,276 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:49,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9447 treesize of output 9320 [2022-12-13 15:50:49,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:49,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9311 treesize of output 8776 [2022-12-13 15:50:49,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 15:50:49,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8767 treesize of output 8504