./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/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_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/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_5dd91b49-6624-4714-ae15-83f7b8092c0b/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 c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --- 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 21:00:29,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:00:29,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:00:29,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:00:29,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:00:29,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:00:29,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:00:29,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:00:29,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:00:29,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:00:29,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:00:29,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:00:29,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:00:29,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:00:29,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:00:29,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:00:29,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:00:29,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:00:29,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:00:29,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:00:29,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:00:29,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:00:29,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:00:29,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:00:29,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:00:29,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:00:29,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:00:29,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:00:29,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:00:29,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:00:29,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:00:29,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:00:29,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:00:29,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:00:29,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:00:29,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:00:29,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:00:29,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:00:29,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:00:29,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:00:29,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:00:29,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 21:00:29,949 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:00:29,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:00:29,949 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:00:29,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:00:29,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:00:29,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:00:29,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:00:29,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:00:29,951 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:00:29,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:00:29,951 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:00:29,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:00:29,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:00:29,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:00:29,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:00:29,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:00:29,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:00:29,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:00:29,952 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 21:00:29,953 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:00:29,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:00:29,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:00:29,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:00:29,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:00:29,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:00:29,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:00:29,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:00:29,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:00:29,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:00:29,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:00:29,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:00:29,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:00:29,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:00:29,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:00:29,955 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:00:29,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:00:29,955 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:00:29,955 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_5dd91b49-6624-4714-ae15-83f7b8092c0b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f [2022-12-13 21:00:30,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:00:30,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:00:30,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:00:30,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:00:30,194 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:00:30,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-12-13 21:00:32,870 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:00:33,010 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:00:33,011 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2022-12-13 21:00:33,015 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/data/9da4ba9e2/7e0007dfd1d64074975d3e549fc5e61a/FLAG3406fa5b9 [2022-12-13 21:00:33,026 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/data/9da4ba9e2/7e0007dfd1d64074975d3e549fc5e61a [2022-12-13 21:00:33,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:00:33,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:00:33,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:00:33,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:00:33,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:00:33,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9adb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33, skipping insertion in model container [2022-12-13 21:00:33,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:00:33,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:00:33,198 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_5dd91b49-6624-4714-ae15-83f7b8092c0b/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-12-13 21:00:33,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:00:33,214 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:00:33,234 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_5dd91b49-6624-4714-ae15-83f7b8092c0b/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c[2695,2708] [2022-12-13 21:00:33,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:00:33,253 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:00:33,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33 WrapperNode [2022-12-13 21:00:33,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:00:33,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:00:33,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:00:33,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:00:33,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,292 INFO L138 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 230 [2022-12-13 21:00:33,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:00:33,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:00:33,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:00:33,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:00:33,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:00:33,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:00:33,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:00:33,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:00:33,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (1/1) ... [2022-12-13 21:00:33,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:00:33,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:00:33,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:00:33,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:00:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:00:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:00:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:00:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:00:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:00:33,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:00:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:00:33,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:00:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:00:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:00:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:00:33,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:00:33,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:00:33,388 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 21:00:33,470 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:00:33,472 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:00:33,812 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:00:33,822 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:00:33,822 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 21:00:33,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:00:33 BoogieIcfgContainer [2022-12-13 21:00:33,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:00:33,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:00:33,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:00:33,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:00:33,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:00:33" (1/3) ... [2022-12-13 21:00:33,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c9f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:00:33, skipping insertion in model container [2022-12-13 21:00:33,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:00:33" (2/3) ... [2022-12-13 21:00:33,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c9f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:00:33, skipping insertion in model container [2022-12-13 21:00:33,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:00:33" (3/3) ... [2022-12-13 21:00:33,834 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2022-12-13 21:00:33,842 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:00:33,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:00:33,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-12-13 21:00:33,852 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:00:33,928 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 21:00:33,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 658 flow [2022-12-13 21:00:34,028 INFO L130 PetriNetUnfolder]: 25/319 cut-off events. [2022-12-13 21:00:34,028 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:00:34,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 319 events. 25/319 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 536 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2022-12-13 21:00:34,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 321 transitions, 658 flow [2022-12-13 21:00:34,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 284 transitions, 577 flow [2022-12-13 21:00:34,042 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:00:34,048 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 284 transitions, 577 flow [2022-12-13 21:00:34,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 284 transitions, 577 flow [2022-12-13 21:00:34,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 284 transitions, 577 flow [2022-12-13 21:00:34,113 INFO L130 PetriNetUnfolder]: 22/284 cut-off events. [2022-12-13 21:00:34,113 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:00:34,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 284 events. 22/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 392 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 200. Up to 2 conditions per place. [2022-12-13 21:00:34,122 INFO L119 LiptonReduction]: Number of co-enabled transitions 14852 [2022-12-13 21:00:46,932 INFO L134 LiptonReduction]: Checked pairs total: 15924 [2022-12-13 21:00:46,932 INFO L136 LiptonReduction]: Total number of compositions: 377 [2022-12-13 21:00:46,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:00:46,947 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;@29da1118, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:00:46,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-12-13 21:00:46,949 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 21:00:46,949 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:00:46,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:00:46,950 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:00:46,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 21:00:46,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:00:46,954 INFO L85 PathProgramCache]: Analyzing trace with hash 42037, now seen corresponding path program 1 times [2022-12-13 21:00:46,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:00:46,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722992614] [2022-12-13 21:00:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:46,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:00:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:47,141 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 21:00:47,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:00:47,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722992614] [2022-12-13 21:00:47,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722992614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:00:47,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:00:47,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:00:47,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659310463] [2022-12-13 21:00:47,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:00:47,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:00:47,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:00:47,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:00:47,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:00:47,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 698 [2022-12-13 21:00:47,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 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 21:00:47,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:00:47,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 698 [2022-12-13 21:00:47,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:00:47,359 INFO L130 PetriNetUnfolder]: 279/480 cut-off events. [2022-12-13 21:00:47,359 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-12-13 21:00:47,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 480 events. 279/480 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2005 event pairs, 237 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 900. Up to 480 conditions per place. [2022-12-13 21:00:47,363 INFO L137 encePairwiseOnDemand]: 690/698 looper letters, 30 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2022-12-13 21:00:47,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 133 flow [2022-12-13 21:00:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:00:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:00:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2022-12-13 21:00:47,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4379178605539637 [2022-12-13 21:00:47,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2022-12-13 21:00:47,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2022-12-13 21:00:47,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:00:47,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2022-12-13 21:00:47,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:00:47,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 0 states have call successors, (0), 0 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 21:00:47,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 0 states have call successors, (0), 0 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 21:00:47,404 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 85 flow. Second operand 3 states and 917 transitions. [2022-12-13 21:00:47,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 133 flow [2022-12-13 21:00:47,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:00:47,410 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 68 flow [2022-12-13 21:00:47,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2022-12-13 21:00:47,415 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2022-12-13 21:00:47,416 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 68 flow [2022-12-13 21:00:47,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 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 21:00:47,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:00:47,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:00:47,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:00:47,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 21:00:47,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:00:47,418 INFO L85 PathProgramCache]: Analyzing trace with hash 42056, now seen corresponding path program 1 times [2022-12-13 21:00:47,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:00:47,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392537683] [2022-12-13 21:00:47,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:47,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:00:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:47,469 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 21:00:47,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:00:47,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392537683] [2022-12-13 21:00:47,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392537683] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:00:47,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:00:47,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:00:47,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546151762] [2022-12-13 21:00:47,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:00:47,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:00:47,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:00:47,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:00:47,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:00:47,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 698 [2022-12-13 21:00:47,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 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 21:00:47,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:00:47,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 698 [2022-12-13 21:00:47,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:00:47,684 INFO L130 PetriNetUnfolder]: 557/957 cut-off events. [2022-12-13 21:00:47,684 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 21:00:47,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 957 events. 557/957 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4636 event pairs, 474 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 1954. Up to 481 conditions per place. [2022-12-13 21:00:47,688 INFO L137 encePairwiseOnDemand]: 692/698 looper letters, 55 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2022-12-13 21:00:47,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 59 transitions, 246 flow [2022-12-13 21:00:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:00:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:00:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 940 transitions. [2022-12-13 21:00:47,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.448901623686724 [2022-12-13 21:00:47,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 940 transitions. [2022-12-13 21:00:47,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 940 transitions. [2022-12-13 21:00:47,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:00:47,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 940 transitions. [2022-12-13 21:00:47,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 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 21:00:47,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 0 states have call successors, (0), 0 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 21:00:47,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 0 states have call successors, (0), 0 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 21:00:47,695 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 68 flow. Second operand 3 states and 940 transitions. [2022-12-13 21:00:47,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 59 transitions, 246 flow [2022-12-13 21:00:47,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 59 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:00:47,696 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 99 flow [2022-12-13 21:00:47,696 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2022-12-13 21:00:47,697 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -5 predicate places. [2022-12-13 21:00:47,697 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 99 flow [2022-12-13 21:00:47,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 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 21:00:47,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:00:47,697 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:00:47,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:00:47,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 21:00:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:00:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1304965, now seen corresponding path program 1 times [2022-12-13 21:00:47,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:00:47,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714771025] [2022-12-13 21:00:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:47,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:00:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:47,752 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 21:00:47,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:00:47,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714771025] [2022-12-13 21:00:47,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714771025] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:00:47,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371490094] [2022-12-13 21:00:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:47,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:00:47,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:00:47,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:00:47,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:00:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:47,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:00:47,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:00:47,866 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 21:00:47,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:00:47,882 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 21:00:47,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371490094] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:00:47,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:00:47,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-13 21:00:47,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129521926] [2022-12-13 21:00:47,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:00:47,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:00:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:00:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:00:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:00:47,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 698 [2022-12-13 21:00:47,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 294.0) internal successors, (1764), 6 states have internal predecessors, (1764), 0 states have call successors, (0), 0 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 21:00:47,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:00:47,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 698 [2022-12-13 21:00:47,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:00:48,426 INFO L130 PetriNetUnfolder]: 1391/2388 cut-off events. [2022-12-13 21:00:48,426 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 21:00:48,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 2388 events. 1391/2388 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 13286 event pairs, 1185 based on Foata normal form. 0/1096 useless extension candidates. Maximal degree in co-relation 4902. Up to 481 conditions per place. [2022-12-13 21:00:48,433 INFO L137 encePairwiseOnDemand]: 692/698 looper letters, 130 selfloop transitions, 13 changer transitions 0/143 dead transitions. [2022-12-13 21:00:48,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 143 transitions, 643 flow [2022-12-13 21:00:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:00:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:00:48,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1907 transitions. [2022-12-13 21:00:48,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45534861509073543 [2022-12-13 21:00:48,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1907 transitions. [2022-12-13 21:00:48,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1907 transitions. [2022-12-13 21:00:48,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:00:48,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1907 transitions. [2022-12-13 21:00:48,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 317.8333333333333) internal successors, (1907), 6 states have internal predecessors, (1907), 0 states have call successors, (0), 0 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 21:00:48,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 698.0) internal successors, (4886), 7 states have internal predecessors, (4886), 0 states have call successors, (0), 0 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 21:00:48,445 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 698.0) internal successors, (4886), 7 states have internal predecessors, (4886), 0 states have call successors, (0), 0 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 21:00:48,445 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 99 flow. Second operand 6 states and 1907 transitions. [2022-12-13 21:00:48,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 143 transitions, 643 flow [2022-12-13 21:00:48,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 143 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:00:48,447 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 184 flow [2022-12-13 21:00:48,447 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2022-12-13 21:00:48,448 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2022-12-13 21:00:48,448 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 184 flow [2022-12-13 21:00:48,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 294.0) internal successors, (1764), 6 states have internal predecessors, (1764), 0 states have call successors, (0), 0 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 21:00:48,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:00:48,448 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 21:00:48,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:00:48,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:00:48,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 21:00:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:00:48,650 INFO L85 PathProgramCache]: Analyzing trace with hash 222727048, now seen corresponding path program 2 times [2022-12-13 21:00:48,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:00:48,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344449393] [2022-12-13 21:00:48,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:48,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:00:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:48,799 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 21:00:48,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:00:48,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344449393] [2022-12-13 21:00:48,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344449393] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:00:48,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454493574] [2022-12-13 21:00:48,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:00:48,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:00:48,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:00:48,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:00:48,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:00:48,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:00:48,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:00:48,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:00:48,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:00:48,879 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 21:00:48,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:00:48,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454493574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:00:48,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:00:48,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 21:00:48,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260752075] [2022-12-13 21:00:48,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:00:48,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:00:48,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:00:48,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:00:48,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:00:48,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 698 [2022-12-13 21:00:48,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 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 21:00:48,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:00:48,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 698 [2022-12-13 21:00:48,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:00:49,261 INFO L130 PetriNetUnfolder]: 1391/2386 cut-off events. [2022-12-13 21:00:49,262 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-13 21:00:49,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4925 conditions, 2386 events. 1391/2386 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13934 event pairs, 1185 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 4913. Up to 2386 conditions per place. [2022-12-13 21:00:49,269 INFO L137 encePairwiseOnDemand]: 695/698 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-12-13 21:00:49,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 246 flow [2022-12-13 21:00:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:00:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:00:49,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 916 transitions. [2022-12-13 21:00:49,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.437440305635148 [2022-12-13 21:00:49,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 916 transitions. [2022-12-13 21:00:49,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 916 transitions. [2022-12-13 21:00:49,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:00:49,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 916 transitions. [2022-12-13 21:00:49,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:00:49,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 0 states have call successors, (0), 0 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 21:00:49,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 0 states have call successors, (0), 0 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 21:00:49,278 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 184 flow. Second operand 3 states and 916 transitions. [2022-12-13 21:00:49,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 246 flow [2022-12-13 21:00:49,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 201 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-13 21:00:49,279 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 121 flow [2022-12-13 21:00:49,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2022-12-13 21:00:49,280 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2022-12-13 21:00:49,280 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 121 flow [2022-12-13 21:00:49,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 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 21:00:49,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:00:49,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:00:49,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 21:00:49,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:00:49,481 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 21:00:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:00:49,482 INFO L85 PathProgramCache]: Analyzing trace with hash 188989075, now seen corresponding path program 1 times [2022-12-13 21:00:49,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:00:49,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462669704] [2022-12-13 21:00:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:49,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:00:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:49,540 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 21:00:49,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:00:49,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462669704] [2022-12-13 21:00:49,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462669704] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:00:49,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:00:49,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:00:49,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838963925] [2022-12-13 21:00:49,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:00:49,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:00:49,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:00:49,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:00:49,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:00:49,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 698 [2022-12-13 21:00:49,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 21:00:49,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:00:49,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 698 [2022-12-13 21:00:49,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:00:49,910 INFO L130 PetriNetUnfolder]: 1113/1911 cut-off events. [2022-12-13 21:00:49,910 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-12-13 21:00:49,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 1911 events. 1113/1911 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10778 event pairs, 948 based on Foata normal form. 1/876 useless extension candidates. Maximal degree in co-relation 3918. Up to 1907 conditions per place. [2022-12-13 21:00:49,919 INFO L137 encePairwiseOnDemand]: 693/698 looper letters, 33 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2022-12-13 21:00:49,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 197 flow [2022-12-13 21:00:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:00:49,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:00:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 906 transitions. [2022-12-13 21:00:49,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4326647564469914 [2022-12-13 21:00:49,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 906 transitions. [2022-12-13 21:00:49,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 906 transitions. [2022-12-13 21:00:49,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:00:49,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 906 transitions. [2022-12-13 21:00:49,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 21:00:49,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 0 states have call successors, (0), 0 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 21:00:49,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 0 states have call successors, (0), 0 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 21:00:49,929 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 121 flow. Second operand 3 states and 906 transitions. [2022-12-13 21:00:49,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 197 flow [2022-12-13 21:00:49,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:00:49,931 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 139 flow [2022-12-13 21:00:49,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=40} [2022-12-13 21:00:49,932 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2022-12-13 21:00:49,932 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 139 flow [2022-12-13 21:00:49,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.3333333333333) internal successors, (880), 3 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 21:00:49,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:00:49,933 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:00:49,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:00:49,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 21:00:49,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:00:49,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1719809258, now seen corresponding path program 1 times [2022-12-13 21:00:49,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:00:49,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164980472] [2022-12-13 21:00:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:49,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:00:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:50,019 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 21:00:50,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:00:50,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164980472] [2022-12-13 21:00:50,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164980472] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:00:50,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883581635] [2022-12-13 21:00:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:50,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:00:50,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:00:50,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:00:50,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:00:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:50,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:00:50,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:00:50,115 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 21:00:50,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:00:50,131 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 21:00:50,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883581635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:00:50,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:00:50,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-13 21:00:50,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718785417] [2022-12-13 21:00:50,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:00:50,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:00:50,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:00:50,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:00:50,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:00:50,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 698 [2022-12-13 21:00:50,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 40 transitions, 139 flow. Second operand has 8 states, 8 states have (on average 288.875) internal successors, (2311), 8 states have internal predecessors, (2311), 0 states have call successors, (0), 0 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 21:00:50,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:00:50,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 698 [2022-12-13 21:00:50,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:00:50,343 INFO L130 PetriNetUnfolder]: 279/486 cut-off events. [2022-12-13 21:00:50,343 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-13 21:00:50,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 486 events. 279/486 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2000 event pairs, 237 based on Foata normal form. 6/234 useless extension candidates. Maximal degree in co-relation 1008. Up to 479 conditions per place. [2022-12-13 21:00:50,344 INFO L137 encePairwiseOnDemand]: 693/698 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2022-12-13 21:00:50,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 192 flow [2022-12-13 21:00:50,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:00:50,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:00:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1765 transitions. [2022-12-13 21:00:50,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42144221585482333 [2022-12-13 21:00:50,349 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1765 transitions. [2022-12-13 21:00:50,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1765 transitions. [2022-12-13 21:00:50,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:00:50,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1765 transitions. [2022-12-13 21:00:50,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.1666666666667) internal successors, (1765), 6 states have internal predecessors, (1765), 0 states have call successors, (0), 0 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 21:00:50,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 698.0) internal successors, (4886), 7 states have internal predecessors, (4886), 0 states have call successors, (0), 0 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 21:00:50,360 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 698.0) internal successors, (4886), 7 states have internal predecessors, (4886), 0 states have call successors, (0), 0 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 21:00:50,360 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 139 flow. Second operand 6 states and 1765 transitions. [2022-12-13 21:00:50,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 192 flow [2022-12-13 21:00:50,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:00:50,362 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 148 flow [2022-12-13 21:00:50,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2022-12-13 21:00:50,362 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2022-12-13 21:00:50,363 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 148 flow [2022-12-13 21:00:50,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 288.875) internal successors, (2311), 8 states have internal predecessors, (2311), 0 states have call successors, (0), 0 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 21:00:50,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:00:50,364 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:00:50,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:00:50,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 21:00:50,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 21:00:50,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:00:50,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1268311507, now seen corresponding path program 2 times [2022-12-13 21:00:50,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:00:50,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083139289] [2022-12-13 21:00:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:50,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:00:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 21:00:50,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:00:50,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083139289] [2022-12-13 21:00:50,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083139289] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:00:50,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391151660] [2022-12-13 21:00:50,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:00:50,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:00:50,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:00:50,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:00:50,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:00:50,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:00:50,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:00:50,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:00:50,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:00:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 21:00:50,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:00:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 21:00:50,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391151660] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:00:50,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:00:50,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-13 21:00:50,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918527621] [2022-12-13 21:00:50,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:00:50,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:00:50,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:00:50,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:00:50,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:00:51,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 698 [2022-12-13 21:00:51,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 148 flow. Second operand has 12 states, 12 states have (on average 288.5) internal successors, (3462), 12 states have internal predecessors, (3462), 0 states have call successors, (0), 0 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 21:00:51,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:00:51,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 698 [2022-12-13 21:00:51,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:00:51,195 INFO L130 PetriNetUnfolder]: 279/488 cut-off events. [2022-12-13 21:00:51,195 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 21:00:51,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 488 events. 279/488 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2000 event pairs, 237 based on Foata normal form. 2/232 useless extension candidates. Maximal degree in co-relation 1029. Up to 479 conditions per place. [2022-12-13 21:00:51,197 INFO L137 encePairwiseOnDemand]: 693/698 looper letters, 27 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2022-12-13 21:00:51,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 234 flow [2022-12-13 21:00:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:00:51,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:00:51,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2050 transitions. [2022-12-13 21:00:51,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41956610724519033 [2022-12-13 21:00:51,200 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2050 transitions. [2022-12-13 21:00:51,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2050 transitions. [2022-12-13 21:00:51,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:00:51,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2050 transitions. [2022-12-13 21:00:51,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 292.85714285714283) internal successors, (2050), 7 states have internal predecessors, (2050), 0 states have call successors, (0), 0 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 21:00:51,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 698.0) internal successors, (5584), 8 states have internal predecessors, (5584), 0 states have call successors, (0), 0 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 21:00:51,207 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 698.0) internal successors, (5584), 8 states have internal predecessors, (5584), 0 states have call successors, (0), 0 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 21:00:51,207 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 148 flow. Second operand 7 states and 2050 transitions. [2022-12-13 21:00:51,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 234 flow [2022-12-13 21:00:51,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 214 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 21:00:51,209 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 170 flow [2022-12-13 21:00:51,209 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2022-12-13 21:00:51,210 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2022-12-13 21:00:51,210 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 170 flow [2022-12-13 21:00:51,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 288.5) internal successors, (3462), 12 states have internal predecessors, (3462), 0 states have call successors, (0), 0 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 21:00:51,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:00:51,211 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:00:51,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:00:51,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 21:00:51,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-12-13 21:00:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:00:51,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1846990678, now seen corresponding path program 3 times [2022-12-13 21:00:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:00:51,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078779703] [2022-12-13 21:00:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:00:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:00:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:00:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:00:52,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:00:52,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078779703] [2022-12-13 21:00:52,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078779703] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:00:52,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362049256] [2022-12-13 21:00:52,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:00:52,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:00:52,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:00:52,750 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:00:52,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dd91b49-6624-4714-ae15-83f7b8092c0b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:00:52,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 21:00:52,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:00:52,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-13 21:00:52,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:00:52,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:00:52,946 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 21:00:52,947 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 21:00:52,998 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 16 treesize of output 12 [2022-12-13 21:00:53,045 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 29 treesize of output 28 [2022-12-13 21:00:53,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:00:53,086 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 21 treesize of output 20 [2022-12-13 21:00:53,144 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-13 21:00:53,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 23 treesize of output 28 [2022-12-13 21:00:53,207 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-12-13 21:00:53,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 32 [2022-12-13 21:00:53,277 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:00:53,277 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 11 treesize of output 11 [2022-12-13 21:00:53,318 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 21:00:53,358 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 21:00:53,391 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 21:00:53,408 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 21:00:53,419 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 21:00:53,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:00:53,454 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 21:00:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:00:53,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:00:53,839 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_276 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_276))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= .cse0 0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse0 2147483648)) (not (<= .cse0 9223372039002259455)))))) (forall ((v_ArrVal_276 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_276))) (let ((.cse2 (select (select .cse3 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= .cse2 0)) (< (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse2 2147483648)) (not (<= 0 .cse2))))))) is different from false [2022-12-13 21:00:53,872 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_276 (Array Int Int)) (v_ArrVal_275 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_275) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_276))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= .cse0 0) (not (<= .cse0 9223372039002259455)) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse0 2147483648)))))) (forall ((v_ArrVal_276 (Array Int Int)) (v_ArrVal_275 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_275) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_276))) (let ((.cse2 (select (select .cse3 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (not (<= .cse2 0)) (not (<= 0 .cse2)) (< (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse2 2147483648))))))) is different from false [2022-12-13 21:01:24,601 INFO L321 Elim1Store]: treesize reduction 360, result has 42.0 percent of original size [2022-12-13 21:01:24,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 478 treesize of output 412 [2022-12-13 21:01:24,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:01:24,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 3525 treesize of output 3609 [2022-12-13 21:01:24,961 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:01:24,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 3397 treesize of output 3409 [2022-12-13 21:01:25,073 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:01:25,074 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 3182 treesize of output 3047 [2022-12-13 21:01:25,163 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:01:25,164 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 3038 treesize of output 2759 [2022-12-13 21:01:25,261 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:01:25,262 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 2750 treesize of output 2719 [2022-12-13 21:01:25,356 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:01:25,357 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 2710 treesize of output 2699