./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:14:31,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:14:31,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:14:31,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:14:31,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:14:31,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:14:31,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:14:31,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:14:31,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:14:31,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:14:31,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:14:31,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:14:31,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:14:31,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:14:31,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:14:31,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:14:31,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:14:31,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:14:31,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:14:31,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:14:31,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:14:31,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:14:31,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:14:31,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:14:31,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:14:31,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:14:31,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:14:31,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:14:31,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:14:31,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:14:31,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:14:31,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:14:31,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:14:31,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:14:31,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:14:31,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:14:31,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:14:31,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:14:31,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:14:31,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:14:31,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:14:31,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:14:31,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:14:31,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:14:31,566 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:14:31,566 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:14:31,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:14:31,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:14:31,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:14:31,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:14:31,571 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:14:31,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:14:31,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:14:31,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:14:31,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:14:31,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:14:31,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:14:31,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:14:31,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:14:31,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:14:31,573 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:14:31,573 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:14:31,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:14:31,573 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:14:31,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:14:31,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:14:31,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:14:31,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:14:31,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:14:31,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:14:31,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:14:31,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:14:31,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:14:31,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:14:31,575 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:14:31,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:14:31,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:14:31,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 [2022-11-16 11:14:31,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:14:31,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:14:31,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:14:31,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:14:31,930 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:14:31,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-11-16 11:14:32,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/data/5b676160e/d9882605b5284e47beb91e1b7e2e3074/FLAG1b9a4775c [2022-11-16 11:14:32,590 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:14:32,591 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-11-16 11:14:32,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/data/5b676160e/d9882605b5284e47beb91e1b7e2e3074/FLAG1b9a4775c [2022-11-16 11:14:32,923 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/data/5b676160e/d9882605b5284e47beb91e1b7e2e3074 [2022-11-16 11:14:32,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:14:32,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:14:32,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:14:32,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:14:32,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:14:32,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:14:32" (1/1) ... [2022-11-16 11:14:32,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fabcfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:32, skipping insertion in model container [2022-11-16 11:14:32,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:14:32" (1/1) ... [2022-11-16 11:14:32,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:14:32,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:14:33,258 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-11-16 11:14:33,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:14:33,274 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:14:33,305 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-11-16 11:14:33,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:14:33,322 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:14:33,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33 WrapperNode [2022-11-16 11:14:33,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:14:33,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:14:33,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:14:33,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:14:33,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (1/1) ... [2022-11-16 11:14:33,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (1/1) ... [2022-11-16 11:14:33,379 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-11-16 11:14:33,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:14:33,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:14:33,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:14:33,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:14:33,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (1/1) ... [2022-11-16 11:14:33,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (1/1) ... [2022-11-16 11:14:33,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (1/1) ... [2022-11-16 11:14:33,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (1/1) ... [2022-11-16 11:14:33,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (1/1) ... [2022-11-16 11:14:33,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (1/1) ... [2022-11-16 11:14:33,427 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (1/1) ... [2022-11-16 11:14:33,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (1/1) ... [2022-11-16 11:14:33,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:14:33,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:14:33,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:14:33,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:14:33,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (1/1) ... [2022-11-16 11:14:33,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:14:33,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:33,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:14:33,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:14:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:14:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:14:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:14:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:14:33,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:14:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:14:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:14:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:14:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:14:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:14:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:14:33,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:14:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:14:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:14:33,558 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:14:33,703 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:14:33,705 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:14:34,027 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:14:34,113 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:14:34,113 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:14:34,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:14:34 BoogieIcfgContainer [2022-11-16 11:14:34,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:14:34,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:14:34,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:14:34,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:14:34,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:14:32" (1/3) ... [2022-11-16 11:14:34,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788d1387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:14:34, skipping insertion in model container [2022-11-16 11:14:34,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:14:33" (2/3) ... [2022-11-16 11:14:34,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788d1387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:14:34, skipping insertion in model container [2022-11-16 11:14:34,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:14:34" (3/3) ... [2022-11-16 11:14:34,141 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-11-16 11:14:34,154 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:14:34,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:14:34,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 11:14:34,167 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:14:34,278 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:14:34,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 102 transitions, 220 flow [2022-11-16 11:14:34,398 INFO L130 PetriNetUnfolder]: 11/100 cut-off events. [2022-11-16 11:14:34,398 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:14:34,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 11/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 141 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2022-11-16 11:14:34,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 102 transitions, 220 flow [2022-11-16 11:14:34,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 81 transitions, 171 flow [2022-11-16 11:14:34,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:14:34,433 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;@794303fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:14:34,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 11:14:34,451 INFO L130 PetriNetUnfolder]: 2/37 cut-off events. [2022-11-16 11:14:34,451 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:14:34,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:34,453 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:34,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:14:34,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:34,460 INFO L85 PathProgramCache]: Analyzing trace with hash -754746104, now seen corresponding path program 1 times [2022-11-16 11:14:34,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:34,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078927784] [2022-11-16 11:14:34,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:34,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:35,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:35,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:35,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078927784] [2022-11-16 11:14:35,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078927784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:35,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:35,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:14:35,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391919081] [2022-11-16 11:14:35,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:35,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:14:35,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:35,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:14:35,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:14:35,088 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-16 11:14:35,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:35,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:35,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-16 11:14:35,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:35,350 INFO L130 PetriNetUnfolder]: 129/304 cut-off events. [2022-11-16 11:14:35,350 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-16 11:14:35,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 304 events. 129/304 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1298 event pairs, 24 based on Foata normal form. 28/199 useless extension candidates. Maximal degree in co-relation 401. Up to 169 conditions per place. [2022-11-16 11:14:35,356 INFO L137 encePairwiseOnDemand]: 87/102 looper letters, 17 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2022-11-16 11:14:35,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 229 flow [2022-11-16 11:14:35,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:14:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:14:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2022-11-16 11:14:35,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8954248366013072 [2022-11-16 11:14:35,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2022-11-16 11:14:35,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2022-11-16 11:14:35,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:35,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2022-11-16 11:14:35,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:35,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:35,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:35,390 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 171 flow. Second operand 3 states and 274 transitions. [2022-11-16 11:14:35,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 229 flow [2022-11-16 11:14:35,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 221 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:14:35,398 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 209 flow [2022-11-16 11:14:35,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2022-11-16 11:14:35,419 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2022-11-16 11:14:35,419 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 209 flow [2022-11-16 11:14:35,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:35,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:35,420 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:35,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:14:35,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:14:35,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 104939503, now seen corresponding path program 1 times [2022-11-16 11:14:35,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:35,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129284286] [2022-11-16 11:14:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:35,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:35,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:35,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129284286] [2022-11-16 11:14:35,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129284286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:35,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:35,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:14:35,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129344313] [2022-11-16 11:14:35,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:35,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:14:35,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:35,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:14:35,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:14:35,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 102 [2022-11-16 11:14:35,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:35,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:35,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 102 [2022-11-16 11:14:35,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:35,680 INFO L130 PetriNetUnfolder]: 161/389 cut-off events. [2022-11-16 11:14:35,681 INFO L131 PetriNetUnfolder]: For 56/144 co-relation queries the response was YES. [2022-11-16 11:14:35,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 389 events. 161/389 cut-off events. For 56/144 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1835 event pairs, 30 based on Foata normal form. 5/243 useless extension candidates. Maximal degree in co-relation 577. Up to 173 conditions per place. [2022-11-16 11:14:35,687 INFO L137 encePairwiseOnDemand]: 96/102 looper letters, 29 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2022-11-16 11:14:35,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 314 flow [2022-11-16 11:14:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:14:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:14:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2022-11-16 11:14:35,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8496732026143791 [2022-11-16 11:14:35,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2022-11-16 11:14:35,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2022-11-16 11:14:35,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:35,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2022-11-16 11:14:35,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:35,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:35,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:35,696 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 209 flow. Second operand 3 states and 260 transitions. [2022-11-16 11:14:35,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 314 flow [2022-11-16 11:14:35,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 93 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:14:35,701 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 234 flow [2022-11-16 11:14:35,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2022-11-16 11:14:35,702 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2022-11-16 11:14:35,703 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 234 flow [2022-11-16 11:14:35,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:35,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:35,704 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:35,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:14:35,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:14:35,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:35,705 INFO L85 PathProgramCache]: Analyzing trace with hash 104939537, now seen corresponding path program 1 times [2022-11-16 11:14:35,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:35,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98957956] [2022-11-16 11:14:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:35,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:35,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:35,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98957956] [2022-11-16 11:14:35,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98957956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:35,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927813119] [2022-11-16 11:14:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:35,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:35,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:35,832 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:35,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:14:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:35,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:14:35,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:36,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:14:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:36,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927813119] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:14:36,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:14:36,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-16 11:14:36,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146796234] [2022-11-16 11:14:36,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:14:36,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:14:36,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:36,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:14:36,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:14:36,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-16 11:14:36,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:36,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:36,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-16 11:14:36,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:36,424 INFO L130 PetriNetUnfolder]: 219/659 cut-off events. [2022-11-16 11:14:36,424 INFO L131 PetriNetUnfolder]: For 126/175 co-relation queries the response was YES. [2022-11-16 11:14:36,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1225 conditions, 659 events. 219/659 cut-off events. For 126/175 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3562 event pairs, 2 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 701. Up to 213 conditions per place. [2022-11-16 11:14:36,433 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 21 selfloop transitions, 19 changer transitions 0/105 dead transitions. [2022-11-16 11:14:36,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 391 flow [2022-11-16 11:14:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:14:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:14:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 530 transitions. [2022-11-16 11:14:36,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8660130718954249 [2022-11-16 11:14:36,440 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 530 transitions. [2022-11-16 11:14:36,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 530 transitions. [2022-11-16 11:14:36,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:36,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 530 transitions. [2022-11-16 11:14:36,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:36,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:36,448 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:36,449 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 234 flow. Second operand 6 states and 530 transitions. [2022-11-16 11:14:36,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 391 flow [2022-11-16 11:14:36,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 105 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:14:36,461 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 358 flow [2022-11-16 11:14:36,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2022-11-16 11:14:36,465 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2022-11-16 11:14:36,465 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 358 flow [2022-11-16 11:14:36,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:36,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:36,466 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:36,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:14:36,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 11:14:36,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:14:36,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1078330672, now seen corresponding path program 1 times [2022-11-16 11:14:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:36,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443697557] [2022-11-16 11:14:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:36,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:36,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443697557] [2022-11-16 11:14:36,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443697557] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:36,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779041148] [2022-11-16 11:14:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:36,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:36,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:36,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:36,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:14:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:36,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:14:36,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:37,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:14:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:37,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779041148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:14:37,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:14:37,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-16 11:14:37,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582722075] [2022-11-16 11:14:37,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:14:37,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:14:37,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:37,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:14:37,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:14:37,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-16 11:14:37,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 358 flow. Second operand has 8 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:37,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:37,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-16 11:14:37,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:37,750 INFO L130 PetriNetUnfolder]: 521/1835 cut-off events. [2022-11-16 11:14:37,750 INFO L131 PetriNetUnfolder]: For 2314/2663 co-relation queries the response was YES. [2022-11-16 11:14:37,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 1835 events. 521/1835 cut-off events. For 2314/2663 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14118 event pairs, 10 based on Foata normal form. 153/1661 useless extension candidates. Maximal degree in co-relation 2111. Up to 445 conditions per place. [2022-11-16 11:14:37,772 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 51 selfloop transitions, 41 changer transitions 0/157 dead transitions. [2022-11-16 11:14:37,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 157 transitions, 919 flow [2022-11-16 11:14:37,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:14:37,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:14:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 722 transitions. [2022-11-16 11:14:37,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8848039215686274 [2022-11-16 11:14:37,776 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 722 transitions. [2022-11-16 11:14:37,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 722 transitions. [2022-11-16 11:14:37,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:37,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 722 transitions. [2022-11-16 11:14:37,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.25) internal successors, (722), 8 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:37,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:37,783 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:37,784 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 358 flow. Second operand 8 states and 722 transitions. [2022-11-16 11:14:37,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 157 transitions, 919 flow [2022-11-16 11:14:37,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 157 transitions, 873 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-11-16 11:14:37,796 INFO L231 Difference]: Finished difference. Result has 95 places, 135 transitions, 863 flow [2022-11-16 11:14:37,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=863, PETRI_PLACES=95, PETRI_TRANSITIONS=135} [2022-11-16 11:14:37,798 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 17 predicate places. [2022-11-16 11:14:37,799 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 135 transitions, 863 flow [2022-11-16 11:14:37,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:37,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:37,800 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:37,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:14:38,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:38,005 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:14:38,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:38,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1781447959, now seen corresponding path program 1 times [2022-11-16 11:14:38,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:38,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055083036] [2022-11-16 11:14:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:38,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:38,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:38,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055083036] [2022-11-16 11:14:38,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055083036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:38,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:38,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:14:38,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185389705] [2022-11-16 11:14:38,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:38,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:14:38,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:14:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:14:38,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-16 11:14:38,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 135 transitions, 863 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:38,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:38,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-16 11:14:38,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:38,656 INFO L130 PetriNetUnfolder]: 751/2662 cut-off events. [2022-11-16 11:14:38,656 INFO L131 PetriNetUnfolder]: For 7322/7886 co-relation queries the response was YES. [2022-11-16 11:14:38,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6440 conditions, 2662 events. 751/2662 cut-off events. For 7322/7886 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 22710 event pairs, 18 based on Foata normal form. 109/2319 useless extension candidates. Maximal degree in co-relation 4821. Up to 525 conditions per place. [2022-11-16 11:14:38,695 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 79 selfloop transitions, 35 changer transitions 0/179 dead transitions. [2022-11-16 11:14:38,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 179 transitions, 1531 flow [2022-11-16 11:14:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:14:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:14:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2022-11-16 11:14:38,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8627450980392157 [2022-11-16 11:14:38,698 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2022-11-16 11:14:38,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2022-11-16 11:14:38,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:38,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2022-11-16 11:14:38,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:38,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:38,701 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:38,701 INFO L175 Difference]: Start difference. First operand has 95 places, 135 transitions, 863 flow. Second operand 4 states and 352 transitions. [2022-11-16 11:14:38,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 179 transitions, 1531 flow [2022-11-16 11:14:38,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 1451 flow, removed 40 selfloop flow, removed 0 redundant places. [2022-11-16 11:14:38,721 INFO L231 Difference]: Finished difference. Result has 100 places, 161 transitions, 1303 flow [2022-11-16 11:14:38,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1303, PETRI_PLACES=100, PETRI_TRANSITIONS=161} [2022-11-16 11:14:38,723 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2022-11-16 11:14:38,723 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 161 transitions, 1303 flow [2022-11-16 11:14:38,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:38,723 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:38,724 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:38,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:14:38,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:14:38,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash 147883295, now seen corresponding path program 1 times [2022-11-16 11:14:38,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:38,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003818641] [2022-11-16 11:14:38,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:38,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:38,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:38,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003818641] [2022-11-16 11:14:38,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003818641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:38,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:38,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:14:38,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071894980] [2022-11-16 11:14:38,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:38,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:14:38,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:38,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:14:38,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:14:38,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 102 [2022-11-16 11:14:38,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 161 transitions, 1303 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:38,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:38,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 102 [2022-11-16 11:14:38,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:39,796 INFO L130 PetriNetUnfolder]: 1600/4633 cut-off events. [2022-11-16 11:14:39,796 INFO L131 PetriNetUnfolder]: For 17107/17447 co-relation queries the response was YES. [2022-11-16 11:14:39,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12268 conditions, 4633 events. 1600/4633 cut-off events. For 17107/17447 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 44105 event pairs, 178 based on Foata normal form. 78/3795 useless extension candidates. Maximal degree in co-relation 11208. Up to 1124 conditions per place. [2022-11-16 11:14:39,857 INFO L137 encePairwiseOnDemand]: 96/102 looper letters, 141 selfloop transitions, 5 changer transitions 0/210 dead transitions. [2022-11-16 11:14:39,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 210 transitions, 2181 flow [2022-11-16 11:14:39,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:14:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:14:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2022-11-16 11:14:39,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8464052287581699 [2022-11-16 11:14:39,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2022-11-16 11:14:39,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2022-11-16 11:14:39,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:39,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2022-11-16 11:14:39,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:39,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:39,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:39,868 INFO L175 Difference]: Start difference. First operand has 100 places, 161 transitions, 1303 flow. Second operand 3 states and 259 transitions. [2022-11-16 11:14:39,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 210 transitions, 2181 flow [2022-11-16 11:14:39,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 210 transitions, 2168 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-16 11:14:39,904 INFO L231 Difference]: Finished difference. Result has 103 places, 163 transitions, 1324 flow [2022-11-16 11:14:39,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1324, PETRI_PLACES=103, PETRI_TRANSITIONS=163} [2022-11-16 11:14:39,909 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 25 predicate places. [2022-11-16 11:14:39,909 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 163 transitions, 1324 flow [2022-11-16 11:14:39,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:39,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:39,910 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:39,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:14:39,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:14:39,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:39,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1483966816, now seen corresponding path program 1 times [2022-11-16 11:14:39,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:39,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632513606] [2022-11-16 11:14:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:39,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:40,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:40,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632513606] [2022-11-16 11:14:40,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632513606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:40,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191754205] [2022-11-16 11:14:40,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:40,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:40,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:40,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:40,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:14:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:40,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:14:40,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:40,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:14:40,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191754205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:40,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:14:40,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-16 11:14:40,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813104209] [2022-11-16 11:14:40,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:40,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:14:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:14:40,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:14:40,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-16 11:14:40,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 163 transitions, 1324 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:40,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:40,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-16 11:14:40,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:41,166 INFO L130 PetriNetUnfolder]: 1199/4182 cut-off events. [2022-11-16 11:14:41,167 INFO L131 PetriNetUnfolder]: For 17511/18514 co-relation queries the response was YES. [2022-11-16 11:14:41,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11613 conditions, 4182 events. 1199/4182 cut-off events. For 17511/18514 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 39226 event pairs, 55 based on Foata normal form. 213/3830 useless extension candidates. Maximal degree in co-relation 6670. Up to 818 conditions per place. [2022-11-16 11:14:41,253 INFO L137 encePairwiseOnDemand]: 92/102 looper letters, 98 selfloop transitions, 74 changer transitions 0/239 dead transitions. [2022-11-16 11:14:41,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 239 transitions, 2636 flow [2022-11-16 11:14:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:14:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:14:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2022-11-16 11:14:41,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8774509803921569 [2022-11-16 11:14:41,256 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 358 transitions. [2022-11-16 11:14:41,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 358 transitions. [2022-11-16 11:14:41,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:41,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 358 transitions. [2022-11-16 11:14:41,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:41,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:41,260 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:41,261 INFO L175 Difference]: Start difference. First operand has 103 places, 163 transitions, 1324 flow. Second operand 4 states and 358 transitions. [2022-11-16 11:14:41,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 239 transitions, 2636 flow [2022-11-16 11:14:41,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 239 transitions, 2626 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:14:41,313 INFO L231 Difference]: Finished difference. Result has 106 places, 223 transitions, 2509 flow [2022-11-16 11:14:41,313 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2509, PETRI_PLACES=106, PETRI_TRANSITIONS=223} [2022-11-16 11:14:41,314 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 28 predicate places. [2022-11-16 11:14:41,314 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 223 transitions, 2509 flow [2022-11-16 11:14:41,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:41,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:41,315 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:41,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:14:41,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:41,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:14:41,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:41,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2124675729, now seen corresponding path program 1 times [2022-11-16 11:14:41,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:41,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243288704] [2022-11-16 11:14:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:41,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:41,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:41,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243288704] [2022-11-16 11:14:41,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243288704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:41,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888646516] [2022-11-16 11:14:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:41,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:41,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:41,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:41,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:14:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:41,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:14:41,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:41,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:14:41,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888646516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:41,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:14:41,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-16 11:14:41,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558530186] [2022-11-16 11:14:41,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:41,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:14:41,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:41,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:14:41,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:14:41,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-16 11:14:41,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 223 transitions, 2509 flow. Second operand has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:41,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:41,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-16 11:14:41,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:42,964 INFO L130 PetriNetUnfolder]: 1714/6166 cut-off events. [2022-11-16 11:14:42,964 INFO L131 PetriNetUnfolder]: For 40758/42796 co-relation queries the response was YES. [2022-11-16 11:14:43,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17678 conditions, 6166 events. 1714/6166 cut-off events. For 40758/42796 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 62881 event pairs, 34 based on Foata normal form. 652/5914 useless extension candidates. Maximal degree in co-relation 15505. Up to 1190 conditions per place. [2022-11-16 11:14:43,053 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 89 selfloop transitions, 135 changer transitions 0/291 dead transitions. [2022-11-16 11:14:43,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 291 transitions, 3887 flow [2022-11-16 11:14:43,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:14:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:14:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2022-11-16 11:14:43,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2022-11-16 11:14:43,055 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2022-11-16 11:14:43,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2022-11-16 11:14:43,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:43,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2022-11-16 11:14:43,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:43,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:43,059 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:43,059 INFO L175 Difference]: Start difference. First operand has 106 places, 223 transitions, 2509 flow. Second operand 5 states and 450 transitions. [2022-11-16 11:14:43,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 291 transitions, 3887 flow [2022-11-16 11:14:43,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 291 transitions, 3751 flow, removed 68 selfloop flow, removed 0 redundant places. [2022-11-16 11:14:43,117 INFO L231 Difference]: Finished difference. Result has 113 places, 279 transitions, 3841 flow [2022-11-16 11:14:43,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3841, PETRI_PLACES=113, PETRI_TRANSITIONS=279} [2022-11-16 11:14:43,118 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 35 predicate places. [2022-11-16 11:14:43,118 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 279 transitions, 3841 flow [2022-11-16 11:14:43,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:43,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:43,119 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:43,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:14:43,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 11:14:43,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:14:43,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:43,326 INFO L85 PathProgramCache]: Analyzing trace with hash -517162754, now seen corresponding path program 1 times [2022-11-16 11:14:43,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:43,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921485551] [2022-11-16 11:14:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:43,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:43,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921485551] [2022-11-16 11:14:43,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921485551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:43,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984700307] [2022-11-16 11:14:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:43,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:43,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:43,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:43,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:14:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:43,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:14:43,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:43,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:14:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:43,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984700307] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:14:43,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:14:43,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-16 11:14:43,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379455304] [2022-11-16 11:14:43,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:14:43,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:14:43,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:43,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:14:43,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:14:43,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-16 11:14:43,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 279 transitions, 3841 flow. Second operand has 9 states, 9 states have (on average 81.77777777777777) internal successors, (736), 9 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:43,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:43,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-16 11:14:43,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:14:47,903 INFO L130 PetriNetUnfolder]: 6181/21994 cut-off events. [2022-11-16 11:14:47,903 INFO L131 PetriNetUnfolder]: For 185771/189132 co-relation queries the response was YES. [2022-11-16 11:14:48,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70077 conditions, 21994 events. 6181/21994 cut-off events. For 185771/189132 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 247761 event pairs, 38 based on Foata normal form. 1398/20341 useless extension candidates. Maximal degree in co-relation 62695. Up to 4210 conditions per place. [2022-11-16 11:14:48,208 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 249 selfloop transitions, 487 changer transitions 0/803 dead transitions. [2022-11-16 11:14:48,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 803 transitions, 13954 flow [2022-11-16 11:14:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:14:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:14:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 812 transitions. [2022-11-16 11:14:48,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8845315904139434 [2022-11-16 11:14:48,212 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 812 transitions. [2022-11-16 11:14:48,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 812 transitions. [2022-11-16 11:14:48,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:14:48,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 812 transitions. [2022-11-16 11:14:48,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.22222222222223) internal successors, (812), 9 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:48,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 102.0) internal successors, (1020), 10 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:48,219 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 102.0) internal successors, (1020), 10 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:48,219 INFO L175 Difference]: Start difference. First operand has 113 places, 279 transitions, 3841 flow. Second operand 9 states and 812 transitions. [2022-11-16 11:14:48,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 803 transitions, 13954 flow [2022-11-16 11:14:48,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 803 transitions, 13446 flow, removed 254 selfloop flow, removed 0 redundant places. [2022-11-16 11:14:48,655 INFO L231 Difference]: Finished difference. Result has 127 places, 695 transitions, 12975 flow [2022-11-16 11:14:48,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=3733, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12975, PETRI_PLACES=127, PETRI_TRANSITIONS=695} [2022-11-16 11:14:48,657 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 49 predicate places. [2022-11-16 11:14:48,657 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 695 transitions, 12975 flow [2022-11-16 11:14:48,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.77777777777777) internal successors, (736), 9 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:48,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:14:48,658 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:14:48,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:14:48,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:48,870 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:14:48,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:48,870 INFO L85 PathProgramCache]: Analyzing trace with hash 756072459, now seen corresponding path program 1 times [2022-11-16 11:14:48,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:48,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408776795] [2022-11-16 11:14:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:48,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:48,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:48,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408776795] [2022-11-16 11:14:48,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408776795] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:14:48,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682542646] [2022-11-16 11:14:48,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:48,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:14:48,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:14:48,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:14:49,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:14:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:49,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:14:49,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:14:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:49,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:14:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:49,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682542646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:14:49,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:14:49,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:14:49,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973420883] [2022-11-16 11:14:49,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:14:49,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:14:49,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:14:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:14:49,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-16 11:14:49,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 695 transitions, 12975 flow. Second operand has 11 states, 11 states have (on average 81.63636363636364) internal successors, (898), 11 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:14:49,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:14:49,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-16 11:14:49,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:15:02,478 INFO L130 PetriNetUnfolder]: 15953/60705 cut-off events. [2022-11-16 11:15:02,478 INFO L131 PetriNetUnfolder]: For 936218/941779 co-relation queries the response was YES. [2022-11-16 11:15:03,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194050 conditions, 60705 events. 15953/60705 cut-off events. For 936218/941779 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 836276 event pairs, 142 based on Foata normal form. 8449/60337 useless extension candidates. Maximal degree in co-relation 141065. Up to 9804 conditions per place. [2022-11-16 11:15:03,545 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 565 selfloop transitions, 1122 changer transitions 0/1754 dead transitions. [2022-11-16 11:15:03,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 1754 transitions, 36456 flow [2022-11-16 11:15:03,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:15:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:15:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 996 transitions. [2022-11-16 11:15:03,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877005347593583 [2022-11-16 11:15:03,550 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 996 transitions. [2022-11-16 11:15:03,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 996 transitions. [2022-11-16 11:15:03,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:15:03,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 996 transitions. [2022-11-16 11:15:03,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.54545454545455) internal successors, (996), 11 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:03,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 102.0) internal successors, (1224), 12 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:03,569 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 102.0) internal successors, (1224), 12 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:03,570 INFO L175 Difference]: Start difference. First operand has 127 places, 695 transitions, 12975 flow. Second operand 11 states and 996 transitions. [2022-11-16 11:15:03,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 1754 transitions, 36456 flow [2022-11-16 11:15:05,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 1754 transitions, 33816 flow, removed 1182 selfloop flow, removed 2 redundant places. [2022-11-16 11:15:05,113 INFO L231 Difference]: Finished difference. Result has 143 places, 1710 transitions, 37230 flow [2022-11-16 11:15:05,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=12165, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=37230, PETRI_PLACES=143, PETRI_TRANSITIONS=1710} [2022-11-16 11:15:05,114 INFO L288 CegarLoopForPetriNet]: 78 programPoint places, 65 predicate places. [2022-11-16 11:15:05,115 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 1710 transitions, 37230 flow [2022-11-16 11:15:05,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.63636363636364) internal successors, (898), 11 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:05,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:15:05,116 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:15:05,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 11:15:05,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:15:05,319 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:15:05,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:15:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash -137224160, now seen corresponding path program 1 times [2022-11-16 11:15:05,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:15:05,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678977637] [2022-11-16 11:15:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:05,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:15:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:05,440 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:05,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:15:05,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678977637] [2022-11-16 11:15:05,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678977637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:15:05,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726149382] [2022-11-16 11:15:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:15:05,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:15:05,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:15:05,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:15:05,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f4d1fdc-9881-4aee-beab-dfa644fc9f04/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:15:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:15:05,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:15:05,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:15:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:05,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:15:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:15:05,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726149382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:15:05,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:15:05,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-16 11:15:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846697535] [2022-11-16 11:15:05,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:15:05,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:15:05,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:15:05,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:15:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=93, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:15:05,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-11-16 11:15:05,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 1710 transitions, 37230 flow. Second operand has 14 states, 14 states have (on average 81.5) internal successors, (1141), 14 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:15:05,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:15:05,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-11-16 11:15:05,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand