./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS --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 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 --- 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-4e7fbc6 [2022-11-23 03:51:56,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:51:56,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:51:56,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:51:56,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:51:56,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:51:56,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:51:56,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:51:56,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:51:56,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:51:56,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:51:56,947 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:51:56,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:51:56,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:51:56,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:51:56,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:51:56,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:51:56,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:51:56,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:51:56,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:51:56,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:51:56,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:51:56,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:51:56,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:51:56,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:51:56,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:51:56,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:51:56,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:51:56,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:51:56,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:51:56,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:51:56,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:51:57,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:51:57,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:51:57,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:51:57,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:51:57,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:51:57,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:51:57,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:51:57,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:51:57,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:51:57,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 03:51:57,054 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:51:57,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:51:57,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:51:57,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:51:57,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:51:57,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:51:57,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:51:57,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:51:57,058 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:51:57,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:51:57,060 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:51:57,060 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:51:57,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:51:57,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:51:57,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:51:57,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:51:57,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:51:57,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:51:57,062 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 03:51:57,062 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:51:57,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:51:57,063 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:51:57,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:51:57,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:51:57,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:51:57,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:51:57,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:51:57,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:51:57,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:51:57,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:51:57,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:51:57,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:51:57,066 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:51:57,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:51:57,067 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:51:57,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:51:57,067 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_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6990ac65798f2c5a95ce01b01bd39640075d7bea37e69dff3da0d3d7c4b56ab2 [2022-11-23 03:51:57,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:51:57,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:51:57,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:51:57,421 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:51:57,422 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:51:57,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2022-11-23 03:52:00,756 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:52:01,050 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:52:01,051 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c [2022-11-23 03:52:01,060 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/data/a71be5a7a/2c867f98f1344ccb9a1e6d7a8dcde78b/FLAG4f2ff25a5 [2022-11-23 03:52:01,079 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/data/a71be5a7a/2c867f98f1344ccb9a1e6d7a8dcde78b [2022-11-23 03:52:01,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:52:01,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:52:01,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:52:01,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:52:01,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:52:01,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365eef73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01, skipping insertion in model container [2022-11-23 03:52:01,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:52:01,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:52:01,393 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_90849653-97d3-4c97-8365-68ec8bc46452/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2022-11-23 03:52:01,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:52:01,413 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:52:01,448 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_90849653-97d3-4c97-8365-68ec8bc46452/sv-benchmarks/c/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2022-11-23 03:52:01,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:52:01,472 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:52:01,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01 WrapperNode [2022-11-23 03:52:01,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:52:01,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:52:01,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:52:01,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:52:01,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,535 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 265 [2022-11-23 03:52:01,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:52:01,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:52:01,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:52:01,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:52:01,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,595 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:52:01,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:52:01,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:52:01,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:52:01,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (1/1) ... [2022-11-23 03:52:01,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:52:01,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:52:01,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:52:01,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:52:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:52:01,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:52:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:52:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:52:01,722 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 03:52:01,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 03:52:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 03:52:01,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 03:52:01,723 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 03:52:01,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 03:52:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:52:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 03:52:01,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 03:52:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 03:52:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:52:01,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:52:01,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:52:01,727 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:52:01,850 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:52:01,852 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:52:02,504 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:52:02,875 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:52:02,875 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-23 03:52:02,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:02 BoogieIcfgContainer [2022-11-23 03:52:02,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:52:02,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:52:02,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:52:02,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:52:02,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:52:01" (1/3) ... [2022-11-23 03:52:02,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2516ac2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:52:02, skipping insertion in model container [2022-11-23 03:52:02,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:01" (2/3) ... [2022-11-23 03:52:02,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2516ac2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:52:02, skipping insertion in model container [2022-11-23 03:52:02,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:52:02" (3/3) ... [2022-11-23 03:52:02,896 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2022-11-23 03:52:02,908 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:52:02,922 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:52:02,922 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-23 03:52:02,922 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:52:03,020 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 03:52:03,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 240 transitions, 504 flow [2022-11-23 03:52:03,175 INFO L130 PetriNetUnfolder]: 18/237 cut-off events. [2022-11-23 03:52:03,175 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:52:03,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 237 events. 18/237 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 194. Up to 3 conditions per place. [2022-11-23 03:52:03,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 240 transitions, 504 flow [2022-11-23 03:52:03,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 216 transitions, 447 flow [2022-11-23 03:52:03,197 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:52:03,215 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 216 transitions, 447 flow [2022-11-23 03:52:03,218 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 216 transitions, 447 flow [2022-11-23 03:52:03,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 216 transitions, 447 flow [2022-11-23 03:52:03,282 INFO L130 PetriNetUnfolder]: 17/216 cut-off events. [2022-11-23 03:52:03,282 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:52:03,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 216 events. 17/216 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 217 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 194. Up to 3 conditions per place. [2022-11-23 03:52:03,288 INFO L119 LiptonReduction]: Number of co-enabled transitions 3252 [2022-11-23 03:52:16,095 INFO L134 LiptonReduction]: Checked pairs total: 5938 [2022-11-23 03:52:16,096 INFO L136 LiptonReduction]: Total number of compositions: 238 [2022-11-23 03:52:16,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:52:16,125 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;@2e118497, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:52:16,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-23 03:52:16,129 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-23 03:52:16,130 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:52:16,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:52:16,131 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 03:52:16,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-23 03:52:16,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:52:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash 35729, now seen corresponding path program 1 times [2022-11-23 03:52:16,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:52:16,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232850988] [2022-11-23 03:52:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:16,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:52:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:16,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:16,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:52:16,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232850988] [2022-11-23 03:52:16,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232850988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:52:16,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:52:16,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:52:16,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445632850] [2022-11-23 03:52:16,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:52:16,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:52:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:52:16,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:52:16,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:52:16,618 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 478 [2022-11-23 03:52:16,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:16,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:52:16,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 478 [2022-11-23 03:52:16,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:52:18,336 INFO L130 PetriNetUnfolder]: 6205/8027 cut-off events. [2022-11-23 03:52:18,336 INFO L131 PetriNetUnfolder]: For 262/262 co-relation queries the response was YES. [2022-11-23 03:52:18,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16365 conditions, 8027 events. 6205/8027 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 39151 event pairs, 3334 based on Foata normal form. 0/2674 useless extension candidates. Maximal degree in co-relation 7317. Up to 3988 conditions per place. [2022-11-23 03:52:18,412 INFO L137 encePairwiseOnDemand]: 464/478 looper letters, 65 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2022-11-23 03:52:18,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 312 flow [2022-11-23 03:52:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:52:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:52:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-23 03:52:18,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4755927475592748 [2022-11-23 03:52:18,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-23 03:52:18,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-23 03:52:18,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:52:18,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-23 03:52:18,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:18,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:18,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:18,473 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 682 transitions. [2022-11-23 03:52:18,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 312 flow [2022-11-23 03:52:18,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-23 03:52:18,490 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 122 flow [2022-11-23 03:52:18,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2022-11-23 03:52:18,501 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2022-11-23 03:52:18,502 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 122 flow [2022-11-23 03:52:18,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:18,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:52:18,504 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:52:18,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:52:18,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-23 03:52:18,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:52:18,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1109879, now seen corresponding path program 1 times [2022-11-23 03:52:18,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:52:18,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753575037] [2022-11-23 03:52:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:18,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:52:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:18,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:52:18,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753575037] [2022-11-23 03:52:18,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753575037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:52:18,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:52:18,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:52:18,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146791453] [2022-11-23 03:52:18,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:52:18,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:52:18,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:52:18,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:52:18,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:52:18,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 478 [2022-11-23 03:52:18,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:18,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:52:18,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 478 [2022-11-23 03:52:18,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:52:20,121 INFO L130 PetriNetUnfolder]: 6205/8025 cut-off events. [2022-11-23 03:52:20,122 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-11-23 03:52:20,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16249 conditions, 8025 events. 6205/8025 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 39074 event pairs, 3334 based on Foata normal form. 0/2671 useless extension candidates. Maximal degree in co-relation 8113. Up to 7967 conditions per place. [2022-11-23 03:52:20,198 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 37 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-11-23 03:52:20,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 190 flow [2022-11-23 03:52:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:52:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:52:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2022-11-23 03:52:20,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4421199442119944 [2022-11-23 03:52:20,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2022-11-23 03:52:20,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2022-11-23 03:52:20,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:52:20,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2022-11-23 03:52:20,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:20,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:20,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:20,212 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 122 flow. Second operand 3 states and 634 transitions. [2022-11-23 03:52:20,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 190 flow [2022-11-23 03:52:20,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:52:20,215 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 108 flow [2022-11-23 03:52:20,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, 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=108, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2022-11-23 03:52:20,217 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2022-11-23 03:52:20,217 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 108 flow [2022-11-23 03:52:20,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:20,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:52:20,219 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:52:20,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:52:20,219 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-23 03:52:20,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:52:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1109897, now seen corresponding path program 1 times [2022-11-23 03:52:20,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:52:20,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608331995] [2022-11-23 03:52:20,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:20,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:52:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:20,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:52:20,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608331995] [2022-11-23 03:52:20,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608331995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:52:20,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170540809] [2022-11-23 03:52:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:20,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:52:20,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:52:20,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:52:20,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:52:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:20,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:52:20,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:52:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:20,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:52:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:20,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170540809] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:52:20,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:52:20,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-23 03:52:20,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277303513] [2022-11-23 03:52:20,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:52:20,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:52:20,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:52:20,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:52:20,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:52:20,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 478 [2022-11-23 03:52:20,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:20,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:52:20,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 478 [2022-11-23 03:52:20,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:52:24,352 INFO L130 PetriNetUnfolder]: 15511/20058 cut-off events. [2022-11-23 03:52:24,353 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-23 03:52:24,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40594 conditions, 20058 events. 15511/20058 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 1513. Compared 107355 event pairs, 8335 based on Foata normal form. 0/6699 useless extension candidates. Maximal degree in co-relation 40586. Up to 3986 conditions per place. [2022-11-23 03:52:24,489 INFO L137 encePairwiseOnDemand]: 472/478 looper letters, 150 selfloop transitions, 13 changer transitions 0/166 dead transitions. [2022-11-23 03:52:24,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 166 transitions, 726 flow [2022-11-23 03:52:24,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:52:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:52:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1363 transitions. [2022-11-23 03:52:24,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47524407252440726 [2022-11-23 03:52:24,495 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1363 transitions. [2022-11-23 03:52:24,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1363 transitions. [2022-11-23 03:52:24,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:52:24,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1363 transitions. [2022-11-23 03:52:24,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.16666666666666) internal successors, (1363), 6 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:24,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:24,510 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:24,510 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 108 flow. Second operand 6 states and 1363 transitions. [2022-11-23 03:52:24,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 166 transitions, 726 flow [2022-11-23 03:52:24,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 166 transitions, 725 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:52:24,517 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 200 flow [2022-11-23 03:52:24,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2022-11-23 03:52:24,519 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2022-11-23 03:52:24,520 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 200 flow [2022-11-23 03:52:24,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:24,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:52:24,522 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-23 03:52:24,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:52:24,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:52:24,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-23 03:52:24,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:52:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1293069021, now seen corresponding path program 2 times [2022-11-23 03:52:24,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:52:24,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41643807] [2022-11-23 03:52:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:24,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:52:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:24,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:52:24,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41643807] [2022-11-23 03:52:24,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41643807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:52:24,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566822376] [2022-11-23 03:52:24,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:52:24,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:52:24,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:52:24,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:52:24,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:52:25,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 03:52:25,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:52:25,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:52:25,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:52:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 03:52:25,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:52:25,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566822376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:52:25,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:52:25,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-23 03:52:25,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635958374] [2022-11-23 03:52:25,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:52:25,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:52:25,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:52:25,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:52:25,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-23 03:52:25,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 478 [2022-11-23 03:52:25,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:25,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:52:25,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 478 [2022-11-23 03:52:25,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:52:27,997 INFO L130 PetriNetUnfolder]: 15511/20057 cut-off events. [2022-11-23 03:52:27,997 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2022-11-23 03:52:28,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40621 conditions, 20057 events. 15511/20057 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 108278 event pairs, 8335 based on Foata normal form. 1/6676 useless extension candidates. Maximal degree in co-relation 40609. Up to 19907 conditions per place. [2022-11-23 03:52:28,165 INFO L137 encePairwiseOnDemand]: 475/478 looper letters, 40 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2022-11-23 03:52:28,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 282 flow [2022-11-23 03:52:28,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:52:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:52:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2022-11-23 03:52:28,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44490934449093444 [2022-11-23 03:52:28,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2022-11-23 03:52:28,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2022-11-23 03:52:28,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:52:28,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2022-11-23 03:52:28,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:28,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:28,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:28,177 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 200 flow. Second operand 3 states and 638 transitions. [2022-11-23 03:52:28,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 282 flow [2022-11-23 03:52:28,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 263 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 03:52:28,180 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 183 flow [2022-11-23 03:52:28,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2022-11-23 03:52:28,181 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2022-11-23 03:52:28,182 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 183 flow [2022-11-23 03:52:28,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:28,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:52:28,183 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:52:28,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 03:52:28,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:52:28,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-23 03:52:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:52:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1284005246, now seen corresponding path program 1 times [2022-11-23 03:52:28,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:52:28,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304111944] [2022-11-23 03:52:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:28,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:52:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:28,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:28,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:52:28,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304111944] [2022-11-23 03:52:28,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304111944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:52:28,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:52:28,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:52:28,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434504874] [2022-11-23 03:52:28,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:52:28,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:52:28,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:52:28,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:52:28,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:52:28,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 478 [2022-11-23 03:52:28,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:28,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:52:28,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 478 [2022-11-23 03:52:28,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:52:32,177 INFO L130 PetriNetUnfolder]: 21321/28687 cut-off events. [2022-11-23 03:52:32,178 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2022-11-23 03:52:32,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58247 conditions, 28687 events. 21321/28687 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 2353. Compared 180672 event pairs, 8425 based on Foata normal form. 0/10977 useless extension candidates. Maximal degree in co-relation 58234. Up to 17293 conditions per place. [2022-11-23 03:52:32,350 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 70 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2022-11-23 03:52:32,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 382 flow [2022-11-23 03:52:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:52:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:52:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 671 transitions. [2022-11-23 03:52:32,354 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4679218967921897 [2022-11-23 03:52:32,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 671 transitions. [2022-11-23 03:52:32,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 671 transitions. [2022-11-23 03:52:32,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:52:32,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 671 transitions. [2022-11-23 03:52:32,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:32,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:32,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:32,361 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 183 flow. Second operand 3 states and 671 transitions. [2022-11-23 03:52:32,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 382 flow [2022-11-23 03:52:32,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:52:32,363 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 185 flow [2022-11-23 03:52:32,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2022-11-23 03:52:32,365 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2022-11-23 03:52:32,365 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 185 flow [2022-11-23 03:52:32,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:32,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:52:32,366 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:52:32,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:52:32,366 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-23 03:52:32,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:52:32,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1284005369, now seen corresponding path program 1 times [2022-11-23 03:52:32,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:52:32,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410589437] [2022-11-23 03:52:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:32,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:52:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:32,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:52:32,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410589437] [2022-11-23 03:52:32,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410589437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:52:32,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:52:32,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:52:32,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473166616] [2022-11-23 03:52:32,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:52:32,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:52:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:52:32,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:52:32,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:52:32,544 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 478 [2022-11-23 03:52:32,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:32,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:52:32,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 478 [2022-11-23 03:52:32,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:52:35,648 INFO L130 PetriNetUnfolder]: 19161/26063 cut-off events. [2022-11-23 03:52:35,649 INFO L131 PetriNetUnfolder]: For 1256/1871 co-relation queries the response was YES. [2022-11-23 03:52:35,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55608 conditions, 26063 events. 19161/26063 cut-off events. For 1256/1871 co-relation queries the response was YES. Maximal size of possible extension queue 2172. Compared 163785 event pairs, 12675 based on Foata normal form. 829/11661 useless extension candidates. Maximal degree in co-relation 55595. Up to 25716 conditions per place. [2022-11-23 03:52:35,858 INFO L137 encePairwiseOnDemand]: 468/478 looper letters, 71 selfloop transitions, 4 changer transitions 2/80 dead transitions. [2022-11-23 03:52:35,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 434 flow [2022-11-23 03:52:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:52:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:52:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1050 transitions. [2022-11-23 03:52:35,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4393305439330544 [2022-11-23 03:52:35,872 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1050 transitions. [2022-11-23 03:52:35,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1050 transitions. [2022-11-23 03:52:35,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:52:35,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1050 transitions. [2022-11-23 03:52:35,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:35,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:35,885 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:35,885 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 185 flow. Second operand 5 states and 1050 transitions. [2022-11-23 03:52:35,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 434 flow [2022-11-23 03:52:35,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:52:35,893 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 226 flow [2022-11-23 03:52:35,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2022-11-23 03:52:35,897 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2022-11-23 03:52:35,897 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 226 flow [2022-11-23 03:52:35,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 196.25) internal successors, (785), 4 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:35,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:52:35,898 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-11-23 03:52:35,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:52:35,899 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-23 03:52:35,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:52:35,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1152729481, now seen corresponding path program 1 times [2022-11-23 03:52:35,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:52:35,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079693999] [2022-11-23 03:52:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:35,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:52:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:36,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:52:36,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079693999] [2022-11-23 03:52:36,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079693999] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:52:36,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973424811] [2022-11-23 03:52:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:36,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:52:36,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:52:36,264 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:52:36,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:52:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:36,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:52:36,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:52:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:36,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:52:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:36,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973424811] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:52:36,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:52:36,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 03:52:36,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836889268] [2022-11-23 03:52:36,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:52:36,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:52:36,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:52:36,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:52:36,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:52:36,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 478 [2022-11-23 03:52:36,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 226 flow. Second operand has 13 states, 13 states have (on average 200.15384615384616) internal successors, (2602), 13 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:36,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:52:36,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 478 [2022-11-23 03:52:36,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:52:44,334 INFO L130 PetriNetUnfolder]: 42703/57885 cut-off events. [2022-11-23 03:52:44,335 INFO L131 PetriNetUnfolder]: For 23583/24936 co-relation queries the response was YES. [2022-11-23 03:52:44,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153101 conditions, 57885 events. 42703/57885 cut-off events. For 23583/24936 co-relation queries the response was YES. Maximal size of possible extension queue 2710. Compared 378931 event pairs, 28138 based on Foata normal form. 1365/25319 useless extension candidates. Maximal degree in co-relation 153085. Up to 15403 conditions per place. [2022-11-23 03:52:44,669 INFO L137 encePairwiseOnDemand]: 473/478 looper letters, 334 selfloop transitions, 32 changer transitions 0/369 dead transitions. [2022-11-23 03:52:44,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 369 transitions, 2040 flow [2022-11-23 03:52:44,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:52:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 03:52:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2748 transitions. [2022-11-23 03:52:44,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4790794979079498 [2022-11-23 03:52:44,680 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2748 transitions. [2022-11-23 03:52:44,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2748 transitions. [2022-11-23 03:52:44,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:52:44,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2748 transitions. [2022-11-23 03:52:44,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:44,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:44,706 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:44,706 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 226 flow. Second operand 12 states and 2748 transitions. [2022-11-23 03:52:44,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 369 transitions, 2040 flow [2022-11-23 03:52:44,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 369 transitions, 2034 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-23 03:52:44,717 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 432 flow [2022-11-23 03:52:44,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=432, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2022-11-23 03:52:44,718 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 21 predicate places. [2022-11-23 03:52:44,719 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 432 flow [2022-11-23 03:52:44,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 200.15384615384616) internal successors, (2602), 13 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:44,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:52:44,721 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:52:44,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 03:52:44,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:52:44,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-23 03:52:44,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:52:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1421368595, now seen corresponding path program 1 times [2022-11-23 03:52:44,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:52:44,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842488262] [2022-11-23 03:52:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:44,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:52:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:45,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:52:45,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842488262] [2022-11-23 03:52:45,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842488262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:52:45,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640757003] [2022-11-23 03:52:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:45,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:52:45,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:52:45,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:52:45,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:52:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:45,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:52:45,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:52:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:52:45,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:52:45,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640757003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:52:45,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:52:45,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-11-23 03:52:45,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284581933] [2022-11-23 03:52:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:52:45,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:52:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:52:45,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:52:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:52:45,209 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 478 [2022-11-23 03:52:45,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:45,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:52:45,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 478 [2022-11-23 03:52:45,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:52:49,527 INFO L130 PetriNetUnfolder]: 24102/33080 cut-off events. [2022-11-23 03:52:49,527 INFO L131 PetriNetUnfolder]: For 19580/20790 co-relation queries the response was YES. [2022-11-23 03:52:49,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82520 conditions, 33080 events. 24102/33080 cut-off events. For 19580/20790 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 211154 event pairs, 15741 based on Foata normal form. 1210/17513 useless extension candidates. Maximal degree in co-relation 82497. Up to 32915 conditions per place. [2022-11-23 03:52:49,727 INFO L137 encePairwiseOnDemand]: 474/478 looper letters, 62 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2022-11-23 03:52:49,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 540 flow [2022-11-23 03:52:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:52:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:52:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2022-11-23 03:52:49,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44839609483960946 [2022-11-23 03:52:49,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2022-11-23 03:52:49,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2022-11-23 03:52:49,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:52:49,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2022-11-23 03:52:49,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:49,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:49,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:49,737 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 432 flow. Second operand 3 states and 643 transitions. [2022-11-23 03:52:49,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 540 flow [2022-11-23 03:52:49,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 448 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-23 03:52:49,743 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 324 flow [2022-11-23 03:52:49,744 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2022-11-23 03:52:49,744 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 15 predicate places. [2022-11-23 03:52:49,744 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 324 flow [2022-11-23 03:52:49,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:49,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:52:49,745 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:52:49,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 03:52:49,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:52:49,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-23 03:52:49,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:52:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1112747255, now seen corresponding path program 1 times [2022-11-23 03:52:49,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:52:49,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411929455] [2022-11-23 03:52:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:49,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:52:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:52:50,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:52:50,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411929455] [2022-11-23 03:52:50,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411929455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:52:50,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111499643] [2022-11-23 03:52:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:52:50,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:52:50,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:52:50,035 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:52:50,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90849653-97d3-4c97-8365-68ec8bc46452/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:52:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:52:50,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 03:52:50,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:52:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:50,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:52:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:52:50,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111499643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:52:50,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:52:50,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 10 [2022-11-23 03:52:50,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250011741] [2022-11-23 03:52:50,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:52:50,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 03:52:50,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:52:50,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 03:52:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:52:50,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 478 [2022-11-23 03:52:50,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 324 flow. Second operand has 11 states, 11 states have (on average 188.9090909090909) internal successors, (2078), 11 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:52:50,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:52:50,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 478 [2022-11-23 03:52:50,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand