./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/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_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/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_451c2d07-bd67-4a46-85ae-c8dedbf33109/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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- 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 11:45:06,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:45:06,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:45:06,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:45:06,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:45:06,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:45:06,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:45:06,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:45:06,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:45:06,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:45:06,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:45:06,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:45:06,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:45:06,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:45:06,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:45:06,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:45:06,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:45:06,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:45:06,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:45:06,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:45:06,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:45:06,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:45:06,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:45:06,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:45:06,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:45:06,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:45:06,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:45:06,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:45:06,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:45:06,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:45:06,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:45:06,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:45:06,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:45:06,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:45:06,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:45:06,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:45:06,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:45:06,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:45:06,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:45:06,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:45:06,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:45:06,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:45:06,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:45:06,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:45:06,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:45:06,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:45:06,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:45:06,538 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:45:06,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:45:06,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:45:06,539 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:45:06,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:45:06,541 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:45:06,541 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:45:06,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:45:06,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:45:06,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:45:06,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:45:06,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:45:06,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:45:06,543 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:45:06,544 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:45:06,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:45:06,544 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:45:06,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:45:06,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:45:06,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:45:06,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:45:06,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:45:06,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:45:06,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:45:06,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:45:06,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:45:06,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:45:06,550 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:45:06,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:45:06,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:45:06,551 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_451c2d07-bd67-4a46-85ae-c8dedbf33109/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2022-11-16 11:45:06,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:45:06,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:45:06,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:45:06,948 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:45:06,950 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:45:06,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-11-16 11:45:07,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/data/09d30c1eb/1110a9d45d164a988e3bddd00c9d88bc/FLAG4e0924697 [2022-11-16 11:45:07,643 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:45:07,644 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-11-16 11:45:07,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/data/09d30c1eb/1110a9d45d164a988e3bddd00c9d88bc/FLAG4e0924697 [2022-11-16 11:45:07,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/data/09d30c1eb/1110a9d45d164a988e3bddd00c9d88bc [2022-11-16 11:45:07,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:45:07,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:45:07,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:45:07,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:45:07,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:45:07,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:45:07" (1/1) ... [2022-11-16 11:45:07,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d3b1142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:07, skipping insertion in model container [2022-11-16 11:45:07,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:45:07" (1/1) ... [2022-11-16 11:45:07,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:45:08,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:45:08,797 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_451c2d07-bd67-4a46-85ae-c8dedbf33109/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-11-16 11:45:08,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:45:08,813 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:45:08,860 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_451c2d07-bd67-4a46-85ae-c8dedbf33109/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-11-16 11:45:08,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:45:08,926 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:45:08,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08 WrapperNode [2022-11-16 11:45:08,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:45:08,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:45:08,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:45:08,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:45:08,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (1/1) ... [2022-11-16 11:45:08,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (1/1) ... [2022-11-16 11:45:08,981 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-11-16 11:45:08,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:45:08,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:45:08,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:45:08,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:45:08,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (1/1) ... [2022-11-16 11:45:08,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (1/1) ... [2022-11-16 11:45:09,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (1/1) ... [2022-11-16 11:45:09,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (1/1) ... [2022-11-16 11:45:09,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (1/1) ... [2022-11-16 11:45:09,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (1/1) ... [2022-11-16 11:45:09,029 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (1/1) ... [2022-11-16 11:45:09,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (1/1) ... [2022-11-16 11:45:09,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:45:09,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:45:09,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:45:09,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:45:09,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (1/1) ... [2022-11-16 11:45:09,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:45:09,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:09,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:45:09,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:45:09,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:45:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:45:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:45:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:45:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:45:09,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:45:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:45:09,140 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:45:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:45:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:45:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:45:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:45:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:45:09,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:45:09,142 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 11:45:09,411 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:45:09,414 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:45:09,904 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:45:09,914 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:45:09,914 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:45:09,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:09 BoogieIcfgContainer [2022-11-16 11:45:09,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:45:09,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:45:09,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:45:09,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:45:09,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:45:07" (1/3) ... [2022-11-16 11:45:09,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c4eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:45:09, skipping insertion in model container [2022-11-16 11:45:09,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:08" (2/3) ... [2022-11-16 11:45:09,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c4eda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:45:09, skipping insertion in model container [2022-11-16 11:45:09,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:09" (3/3) ... [2022-11-16 11:45:09,929 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2022-11-16 11:45:09,940 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:45:09,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:45:09,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 11:45:09,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:45:10,076 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:45:10,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 150 transitions, 316 flow [2022-11-16 11:45:10,295 INFO L130 PetriNetUnfolder]: 10/148 cut-off events. [2022-11-16 11:45:10,296 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:45:10,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 10/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 201 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 93. Up to 3 conditions per place. [2022-11-16 11:45:10,305 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 150 transitions, 316 flow [2022-11-16 11:45:10,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 132 transitions, 273 flow [2022-11-16 11:45:10,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:45:10,336 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;@13f0eba4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:45:10,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 11:45:10,359 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2022-11-16 11:45:10,360 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:45:10,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:10,361 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:10,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:10,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:10,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1877987877, now seen corresponding path program 1 times [2022-11-16 11:45:10,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:10,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335049076] [2022-11-16 11:45:10,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:10,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:10,792 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 11:45:10,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:10,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335049076] [2022-11-16 11:45:10,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335049076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:10,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:10,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:45:10,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923633804] [2022-11-16 11:45:10,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:10,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:45:10,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:45:10,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:45:10,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 150 [2022-11-16 11:45:10,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 273 flow. Second operand has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 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 11:45:10,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:10,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 150 [2022-11-16 11:45:10,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:10,903 INFO L130 PetriNetUnfolder]: 4/128 cut-off events. [2022-11-16 11:45:10,903 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 11:45:10,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 128 events. 4/128 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 7/123 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2022-11-16 11:45:10,906 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 3 selfloop transitions, 0 changer transitions 0/128 dead transitions. [2022-11-16 11:45:10,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 271 flow [2022-11-16 11:45:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:45:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:45:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 287 transitions. [2022-11-16 11:45:10,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9566666666666667 [2022-11-16 11:45:10,942 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 287 transitions. [2022-11-16 11:45:10,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 287 transitions. [2022-11-16 11:45:10,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:10,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 287 transitions. [2022-11-16 11:45:10,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 11:45:10,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 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 11:45:10,963 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 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 11:45:10,966 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 273 flow. Second operand 2 states and 287 transitions. [2022-11-16 11:45:10,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 271 flow [2022-11-16 11:45:10,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 128 transitions, 266 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:45:10,976 INFO L231 Difference]: Finished difference. Result has 129 places, 128 transitions, 260 flow [2022-11-16 11:45:10,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=129, PETRI_TRANSITIONS=128} [2022-11-16 11:45:10,987 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, -2 predicate places. [2022-11-16 11:45:10,988 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 128 transitions, 260 flow [2022-11-16 11:45:10,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 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 11:45:10,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:10,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:10,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:45:10,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:10,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:10,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1877988838, now seen corresponding path program 1 times [2022-11-16 11:45:10,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:10,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676672859] [2022-11-16 11:45:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:10,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:11,451 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 11:45:11,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:11,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676672859] [2022-11-16 11:45:11,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676672859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:11,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:11,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:11,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693910136] [2022-11-16 11:45:11,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:11,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:45:11,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:11,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:45:11,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:45:11,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 150 [2022-11-16 11:45:11,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 128 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 11:45:11,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:11,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 150 [2022-11-16 11:45:11,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:11,731 INFO L130 PetriNetUnfolder]: 105/455 cut-off events. [2022-11-16 11:45:11,731 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 11:45:11,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 455 events. 105/455 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2209 event pairs, 3 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 676. Up to 116 conditions per place. [2022-11-16 11:45:11,739 INFO L137 encePairwiseOnDemand]: 141/150 looper letters, 33 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-11-16 11:45:11,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 151 transitions, 395 flow [2022-11-16 11:45:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:45:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:45:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 671 transitions. [2022-11-16 11:45:11,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946666666666667 [2022-11-16 11:45:11,745 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 671 transitions. [2022-11-16 11:45:11,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 671 transitions. [2022-11-16 11:45:11,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:11,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 671 transitions. [2022-11-16 11:45:11,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:11,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:11,755 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:11,755 INFO L175 Difference]: Start difference. First operand has 129 places, 128 transitions, 260 flow. Second operand 5 states and 671 transitions. [2022-11-16 11:45:11,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 151 transitions, 395 flow [2022-11-16 11:45:11,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 151 transitions, 395 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:45:11,761 INFO L231 Difference]: Finished difference. Result has 137 places, 135 transitions, 328 flow [2022-11-16 11:45:11,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=137, PETRI_TRANSITIONS=135} [2022-11-16 11:45:11,762 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 6 predicate places. [2022-11-16 11:45:11,762 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 135 transitions, 328 flow [2022-11-16 11:45:11,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 11:45:11,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:11,764 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:11,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:45:11,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:11,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1244315691, now seen corresponding path program 1 times [2022-11-16 11:45:11,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:11,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607731991] [2022-11-16 11:45:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:12,072 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 11:45:12,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:12,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607731991] [2022-11-16 11:45:12,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607731991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:12,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:12,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:12,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843167902] [2022-11-16 11:45:12,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:12,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:45:12,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:12,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:45:12,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:45:12,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-11-16 11:45:12,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 135 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 11:45:12,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:12,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-11-16 11:45:12,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:12,320 INFO L130 PetriNetUnfolder]: 56/442 cut-off events. [2022-11-16 11:45:12,320 INFO L131 PetriNetUnfolder]: For 54/59 co-relation queries the response was YES. [2022-11-16 11:45:12,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 442 events. 56/442 cut-off events. For 54/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1892 event pairs, 15 based on Foata normal form. 4/398 useless extension candidates. Maximal degree in co-relation 682. Up to 47 conditions per place. [2022-11-16 11:45:12,329 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 19 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2022-11-16 11:45:12,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 144 transitions, 398 flow [2022-11-16 11:45:12,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:45:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:45:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 671 transitions. [2022-11-16 11:45:12,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946666666666667 [2022-11-16 11:45:12,334 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 671 transitions. [2022-11-16 11:45:12,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 671 transitions. [2022-11-16 11:45:12,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:12,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 671 transitions. [2022-11-16 11:45:12,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:12,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:12,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:12,343 INFO L175 Difference]: Start difference. First operand has 137 places, 135 transitions, 328 flow. Second operand 5 states and 671 transitions. [2022-11-16 11:45:12,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 144 transitions, 398 flow [2022-11-16 11:45:12,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 144 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:45:12,362 INFO L231 Difference]: Finished difference. Result has 144 places, 138 transitions, 360 flow [2022-11-16 11:45:12,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=144, PETRI_TRANSITIONS=138} [2022-11-16 11:45:12,363 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 13 predicate places. [2022-11-16 11:45:12,364 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 138 transitions, 360 flow [2022-11-16 11:45:12,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 11:45:12,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:12,365 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 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 11:45:12,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:45:12,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:12,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:12,367 INFO L85 PathProgramCache]: Analyzing trace with hash -501017586, now seen corresponding path program 1 times [2022-11-16 11:45:12,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:12,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855118859] [2022-11-16 11:45:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:12,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:12,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:12,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855118859] [2022-11-16 11:45:12,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855118859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:12,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586753115] [2022-11-16 11:45:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:12,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:12,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:12,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:45:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:12,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:45:12,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:13,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:45:13,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586753115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:13,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:45:13,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:45:13,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169149220] [2022-11-16 11:45:13,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:13,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:45:13,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:13,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:45:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:13,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 150 [2022-11-16 11:45:13,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 138 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 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 11:45:13,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:13,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 150 [2022-11-16 11:45:13,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:13,367 INFO L130 PetriNetUnfolder]: 128/648 cut-off events. [2022-11-16 11:45:13,368 INFO L131 PetriNetUnfolder]: For 301/343 co-relation queries the response was YES. [2022-11-16 11:45:13,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 648 events. 128/648 cut-off events. For 301/343 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2904 event pairs, 16 based on Foata normal form. 26/634 useless extension candidates. Maximal degree in co-relation 1202. Up to 88 conditions per place. [2022-11-16 11:45:13,378 INFO L137 encePairwiseOnDemand]: 141/150 looper letters, 35 selfloop transitions, 15 changer transitions 1/164 dead transitions. [2022-11-16 11:45:13,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 164 transitions, 556 flow [2022-11-16 11:45:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:45:13,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 928 transitions. [2022-11-16 11:45:13,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8838095238095238 [2022-11-16 11:45:13,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 928 transitions. [2022-11-16 11:45:13,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 928 transitions. [2022-11-16 11:45:13,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:13,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 928 transitions. [2022-11-16 11:45:13,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.57142857142858) internal successors, (928), 7 states have internal predecessors, (928), 0 states have call successors, (0), 0 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 11:45:13,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 11:45:13,401 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 11:45:13,402 INFO L175 Difference]: Start difference. First operand has 144 places, 138 transitions, 360 flow. Second operand 7 states and 928 transitions. [2022-11-16 11:45:13,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 164 transitions, 556 flow [2022-11-16 11:45:13,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 164 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:45:13,412 INFO L231 Difference]: Finished difference. Result has 152 places, 144 transitions, 433 flow [2022-11-16 11:45:13,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=152, PETRI_TRANSITIONS=144} [2022-11-16 11:45:13,415 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 21 predicate places. [2022-11-16 11:45:13,415 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 144 transitions, 433 flow [2022-11-16 11:45:13,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 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 11:45:13,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:13,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:13,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:13,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:13,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:13,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:13,632 INFO L85 PathProgramCache]: Analyzing trace with hash -517995002, now seen corresponding path program 1 times [2022-11-16 11:45:13,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:13,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671757946] [2022-11-16 11:45:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:13,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:13,812 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 11:45:13,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:13,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671757946] [2022-11-16 11:45:13,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671757946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:13,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:13,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:13,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586971903] [2022-11-16 11:45:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:13,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:13,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:13,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-11-16 11:45:13,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 144 transitions, 433 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 11:45:13,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:13,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-11-16 11:45:13,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:13,951 INFO L130 PetriNetUnfolder]: 35/364 cut-off events. [2022-11-16 11:45:13,951 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-16 11:45:13,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 364 events. 35/364 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1284 event pairs, 4 based on Foata normal form. 23/365 useless extension candidates. Maximal degree in co-relation 600. Up to 43 conditions per place. [2022-11-16 11:45:13,955 INFO L137 encePairwiseOnDemand]: 142/150 looper letters, 15 selfloop transitions, 8 changer transitions 0/139 dead transitions. [2022-11-16 11:45:13,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 139 transitions, 433 flow [2022-11-16 11:45:13,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:45:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2022-11-16 11:45:13,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2022-11-16 11:45:13,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2022-11-16 11:45:13,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2022-11-16 11:45:13,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:13,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2022-11-16 11:45:13,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 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 11:45:13,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:13,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:13,963 INFO L175 Difference]: Start difference. First operand has 152 places, 144 transitions, 433 flow. Second operand 3 states and 393 transitions. [2022-11-16 11:45:13,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 139 transitions, 433 flow [2022-11-16 11:45:13,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 139 transitions, 416 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 11:45:13,969 INFO L231 Difference]: Finished difference. Result has 150 places, 137 transitions, 379 flow [2022-11-16 11:45:13,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=150, PETRI_TRANSITIONS=137} [2022-11-16 11:45:13,971 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 19 predicate places. [2022-11-16 11:45:13,971 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 137 transitions, 379 flow [2022-11-16 11:45:13,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 11:45:13,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:13,972 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:13,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:45:13,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:13,973 INFO L85 PathProgramCache]: Analyzing trace with hash 873784845, now seen corresponding path program 1 times [2022-11-16 11:45:13,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:13,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013224053] [2022-11-16 11:45:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:13,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:14,228 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 11:45:14,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:14,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013224053] [2022-11-16 11:45:14,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013224053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:14,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:14,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:45:14,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922579572] [2022-11-16 11:45:14,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:14,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:45:14,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:14,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:45:14,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:45:14,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-11-16 11:45:14,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 137 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 0 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 11:45:14,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:14,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-11-16 11:45:14,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:14,519 INFO L130 PetriNetUnfolder]: 58/476 cut-off events. [2022-11-16 11:45:14,519 INFO L131 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2022-11-16 11:45:14,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 476 events. 58/476 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1936 event pairs, 11 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 867. Up to 49 conditions per place. [2022-11-16 11:45:14,525 INFO L137 encePairwiseOnDemand]: 140/150 looper letters, 39 selfloop transitions, 11 changer transitions 1/159 dead transitions. [2022-11-16 11:45:14,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 159 transitions, 563 flow [2022-11-16 11:45:14,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:45:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1008 transitions. [2022-11-16 11:45:14,529 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84 [2022-11-16 11:45:14,529 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1008 transitions. [2022-11-16 11:45:14,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1008 transitions. [2022-11-16 11:45:14,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:14,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1008 transitions. [2022-11-16 11:45:14,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.0) internal successors, (1008), 8 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 11:45:14,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 11:45:14,538 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 11:45:14,539 INFO L175 Difference]: Start difference. First operand has 150 places, 137 transitions, 379 flow. Second operand 8 states and 1008 transitions. [2022-11-16 11:45:14,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 159 transitions, 563 flow [2022-11-16 11:45:14,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 159 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:45:14,545 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 434 flow [2022-11-16 11:45:14,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=434, PETRI_PLACES=159, PETRI_TRANSITIONS=142} [2022-11-16 11:45:14,549 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 28 predicate places. [2022-11-16 11:45:14,554 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 434 flow [2022-11-16 11:45:14,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 0 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 11:45:14,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:14,555 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:14,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:45:14,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:14,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:14,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1920994870, now seen corresponding path program 1 times [2022-11-16 11:45:14,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:14,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044885960] [2022-11-16 11:45:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:14,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:14,784 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 11:45:14,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:14,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044885960] [2022-11-16 11:45:14,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044885960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:14,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:14,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:45:14,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183490055] [2022-11-16 11:45:14,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:14,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:45:14,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:14,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:45:14,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:45:14,792 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-11-16 11:45:14,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 434 flow. Second operand has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 states have internal predecessors, (734), 0 states have call successors, (0), 0 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 11:45:14,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:14,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-11-16 11:45:14,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:15,064 INFO L130 PetriNetUnfolder]: 58/478 cut-off events. [2022-11-16 11:45:15,064 INFO L131 PetriNetUnfolder]: For 260/260 co-relation queries the response was YES. [2022-11-16 11:45:15,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 478 events. 58/478 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1997 event pairs, 9 based on Foata normal form. 5/464 useless extension candidates. Maximal degree in co-relation 924. Up to 79 conditions per place. [2022-11-16 11:45:15,070 INFO L137 encePairwiseOnDemand]: 139/150 looper letters, 38 selfloop transitions, 13 changer transitions 1/160 dead transitions. [2022-11-16 11:45:15,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 160 transitions, 604 flow [2022-11-16 11:45:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:45:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1006 transitions. [2022-11-16 11:45:15,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383333333333334 [2022-11-16 11:45:15,075 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1006 transitions. [2022-11-16 11:45:15,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1006 transitions. [2022-11-16 11:45:15,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:15,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1006 transitions. [2022-11-16 11:45:15,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.75) internal successors, (1006), 8 states have internal predecessors, (1006), 0 states have call successors, (0), 0 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 11:45:15,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 11:45:15,084 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 11:45:15,085 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 434 flow. Second operand 8 states and 1006 transitions. [2022-11-16 11:45:15,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 160 transitions, 604 flow [2022-11-16 11:45:15,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 160 transitions, 590 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-16 11:45:15,093 INFO L231 Difference]: Finished difference. Result has 166 places, 147 transitions, 502 flow [2022-11-16 11:45:15,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=166, PETRI_TRANSITIONS=147} [2022-11-16 11:45:15,096 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 35 predicate places. [2022-11-16 11:45:15,097 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 147 transitions, 502 flow [2022-11-16 11:45:15,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 states have internal predecessors, (734), 0 states have call successors, (0), 0 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 11:45:15,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:15,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:15,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:45:15,098 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:15,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:15,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1977038457, now seen corresponding path program 1 times [2022-11-16 11:45:15,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:15,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217075977] [2022-11-16 11:45:15,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:15,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:15,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:15,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217075977] [2022-11-16 11:45:15,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217075977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:15,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:15,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:15,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490516573] [2022-11-16 11:45:15,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:15,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:45:15,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:15,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:45:15,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:45:15,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 150 [2022-11-16 11:45:15,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 147 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 11:45:15,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:15,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 150 [2022-11-16 11:45:15,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:15,463 INFO L130 PetriNetUnfolder]: 82/569 cut-off events. [2022-11-16 11:45:15,463 INFO L131 PetriNetUnfolder]: For 348/349 co-relation queries the response was YES. [2022-11-16 11:45:15,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 569 events. 82/569 cut-off events. For 348/349 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2731 event pairs, 23 based on Foata normal form. 0/537 useless extension candidates. Maximal degree in co-relation 1098. Up to 118 conditions per place. [2022-11-16 11:45:15,470 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 22 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2022-11-16 11:45:15,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 157 transitions, 577 flow [2022-11-16 11:45:15,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:45:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:45:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 664 transitions. [2022-11-16 11:45:15,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8853333333333333 [2022-11-16 11:45:15,474 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 664 transitions. [2022-11-16 11:45:15,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 664 transitions. [2022-11-16 11:45:15,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:15,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 664 transitions. [2022-11-16 11:45:15,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 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 11:45:15,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:15,500 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:15,500 INFO L175 Difference]: Start difference. First operand has 166 places, 147 transitions, 502 flow. Second operand 5 states and 664 transitions. [2022-11-16 11:45:15,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 157 transitions, 577 flow [2022-11-16 11:45:15,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 157 transitions, 566 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:45:15,508 INFO L231 Difference]: Finished difference. Result has 169 places, 150 transitions, 523 flow [2022-11-16 11:45:15,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=169, PETRI_TRANSITIONS=150} [2022-11-16 11:45:15,510 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 38 predicate places. [2022-11-16 11:45:15,510 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 150 transitions, 523 flow [2022-11-16 11:45:15,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 11:45:15,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:15,511 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:15,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:45:15,512 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:15,512 INFO L85 PathProgramCache]: Analyzing trace with hash -952249032, now seen corresponding path program 1 times [2022-11-16 11:45:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:15,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169391581] [2022-11-16 11:45:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:15,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:45:15,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:15,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169391581] [2022-11-16 11:45:15,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169391581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:15,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:15,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:15,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873684364] [2022-11-16 11:45:15,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:15,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:45:15,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:15,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:45:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:45:15,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 150 [2022-11-16 11:45:15,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 150 transitions, 523 flow. Second operand has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 11:45:15,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:15,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 150 [2022-11-16 11:45:15,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:15,802 INFO L130 PetriNetUnfolder]: 60/548 cut-off events. [2022-11-16 11:45:15,803 INFO L131 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-11-16 11:45:15,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 548 events. 60/548 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2370 event pairs, 13 based on Foata normal form. 2/545 useless extension candidates. Maximal degree in co-relation 1120. Up to 83 conditions per place. [2022-11-16 11:45:15,809 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 21 selfloop transitions, 11 changer transitions 1/154 dead transitions. [2022-11-16 11:45:15,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 154 transitions, 603 flow [2022-11-16 11:45:15,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:45:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:45:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2022-11-16 11:45:15,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8653333333333333 [2022-11-16 11:45:15,813 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2022-11-16 11:45:15,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2022-11-16 11:45:15,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:15,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2022-11-16 11:45:15,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 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 11:45:15,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:15,820 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:15,820 INFO L175 Difference]: Start difference. First operand has 169 places, 150 transitions, 523 flow. Second operand 5 states and 649 transitions. [2022-11-16 11:45:15,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 154 transitions, 603 flow [2022-11-16 11:45:15,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 154 transitions, 596 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:45:15,828 INFO L231 Difference]: Finished difference. Result has 170 places, 150 transitions, 546 flow [2022-11-16 11:45:15,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=546, PETRI_PLACES=170, PETRI_TRANSITIONS=150} [2022-11-16 11:45:15,829 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 39 predicate places. [2022-11-16 11:45:15,830 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 150 transitions, 546 flow [2022-11-16 11:45:15,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 11:45:15,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:15,831 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:15,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:45:15,832 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:15,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1739499280, now seen corresponding path program 1 times [2022-11-16 11:45:15,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:15,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98674423] [2022-11-16 11:45:15,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:15,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:16,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:16,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98674423] [2022-11-16 11:45:16,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98674423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:16,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097689031] [2022-11-16 11:45:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:16,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:16,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:16,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:16,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:45:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:16,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:45:16,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:45:16,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:45:16,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097689031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:16,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:45:16,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-11-16 11:45:16,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448135037] [2022-11-16 11:45:16,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:16,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:45:16,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:45:16,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:45:16,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-11-16 11:45:16,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 150 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 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 11:45:16,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:16,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-11-16 11:45:16,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:16,679 INFO L130 PetriNetUnfolder]: 76/589 cut-off events. [2022-11-16 11:45:16,680 INFO L131 PetriNetUnfolder]: For 556/556 co-relation queries the response was YES. [2022-11-16 11:45:16,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 589 events. 76/589 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2831 event pairs, 5 based on Foata normal form. 13/597 useless extension candidates. Maximal degree in co-relation 1252. Up to 62 conditions per place. [2022-11-16 11:45:16,687 INFO L137 encePairwiseOnDemand]: 137/150 looper letters, 25 selfloop transitions, 19 changer transitions 0/155 dead transitions. [2022-11-16 11:45:16,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 155 transitions, 652 flow [2022-11-16 11:45:16,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:45:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 992 transitions. [2022-11-16 11:45:16,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8266666666666667 [2022-11-16 11:45:16,691 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 992 transitions. [2022-11-16 11:45:16,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 992 transitions. [2022-11-16 11:45:16,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:16,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 992 transitions. [2022-11-16 11:45:16,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 11:45:16,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 11:45:16,700 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 11:45:16,700 INFO L175 Difference]: Start difference. First operand has 170 places, 150 transitions, 546 flow. Second operand 8 states and 992 transitions. [2022-11-16 11:45:16,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 155 transitions, 652 flow [2022-11-16 11:45:16,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 155 transitions, 630 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:45:16,708 INFO L231 Difference]: Finished difference. Result has 171 places, 149 transitions, 584 flow [2022-11-16 11:45:16,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=584, PETRI_PLACES=171, PETRI_TRANSITIONS=149} [2022-11-16 11:45:16,709 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 40 predicate places. [2022-11-16 11:45:16,710 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 149 transitions, 584 flow [2022-11-16 11:45:16,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 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 11:45:16,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:16,711 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:16,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:16,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:45:16,918 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:16,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1647523225, now seen corresponding path program 1 times [2022-11-16 11:45:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:16,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539948550] [2022-11-16 11:45:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:45:17,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:17,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539948550] [2022-11-16 11:45:17,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539948550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:17,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:17,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:17,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047981413] [2022-11-16 11:45:17,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:17,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:45:17,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:17,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:45:17,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:45:17,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-11-16 11:45:17,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 149 transitions, 584 flow. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 11:45:17,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:17,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-11-16 11:45:17,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:17,206 INFO L130 PetriNetUnfolder]: 42/481 cut-off events. [2022-11-16 11:45:17,207 INFO L131 PetriNetUnfolder]: For 425/425 co-relation queries the response was YES. [2022-11-16 11:45:17,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 481 events. 42/481 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1735 event pairs, 3 based on Foata normal form. 3/482 useless extension candidates. Maximal degree in co-relation 995. Up to 31 conditions per place. [2022-11-16 11:45:17,212 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 12 selfloop transitions, 8 changer transitions 0/152 dead transitions. [2022-11-16 11:45:17,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 152 transitions, 634 flow [2022-11-16 11:45:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:45:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:45:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 663 transitions. [2022-11-16 11:45:17,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.884 [2022-11-16 11:45:17,216 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 663 transitions. [2022-11-16 11:45:17,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 663 transitions. [2022-11-16 11:45:17,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:17,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 663 transitions. [2022-11-16 11:45:17,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 11:45:17,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:17,222 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:17,223 INFO L175 Difference]: Start difference. First operand has 171 places, 149 transitions, 584 flow. Second operand 5 states and 663 transitions. [2022-11-16 11:45:17,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 152 transitions, 634 flow [2022-11-16 11:45:17,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 152 transitions, 605 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:45:17,232 INFO L231 Difference]: Finished difference. Result has 169 places, 149 transitions, 575 flow [2022-11-16 11:45:17,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=169, PETRI_TRANSITIONS=149} [2022-11-16 11:45:17,233 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 38 predicate places. [2022-11-16 11:45:17,233 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 149 transitions, 575 flow [2022-11-16 11:45:17,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 11:45:17,234 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:17,234 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:17,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:45:17,235 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:17,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1237721252, now seen corresponding path program 1 times [2022-11-16 11:45:17,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:17,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626391884] [2022-11-16 11:45:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:17,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:17,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:17,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626391884] [2022-11-16 11:45:17,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626391884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:17,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252108475] [2022-11-16 11:45:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:17,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:17,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:17,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:17,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:45:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:45:17,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:17,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:45:17,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252108475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:17,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:45:17,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 11:45:17,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862090761] [2022-11-16 11:45:17,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:17,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:45:17,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:17,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:45:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:45:17,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-11-16 11:45:17,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 149 transitions, 575 flow. Second operand has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 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 11:45:17,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:17,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-11-16 11:45:17,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:18,011 INFO L130 PetriNetUnfolder]: 43/491 cut-off events. [2022-11-16 11:45:18,011 INFO L131 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2022-11-16 11:45:18,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 491 events. 43/491 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1778 event pairs, 5 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 992. Up to 32 conditions per place. [2022-11-16 11:45:18,017 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 13 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2022-11-16 11:45:18,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 150 transitions, 615 flow [2022-11-16 11:45:18,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:45:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:45:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 531 transitions. [2022-11-16 11:45:18,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.885 [2022-11-16 11:45:18,021 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 531 transitions. [2022-11-16 11:45:18,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 531 transitions. [2022-11-16 11:45:18,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:18,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 531 transitions. [2022-11-16 11:45:18,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 0 states have call successors, (0), 0 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 11:45:18,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 11:45:18,027 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 11:45:18,027 INFO L175 Difference]: Start difference. First operand has 169 places, 149 transitions, 575 flow. Second operand 4 states and 531 transitions. [2022-11-16 11:45:18,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 150 transitions, 615 flow [2022-11-16 11:45:18,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 150 transitions, 603 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:45:18,037 INFO L231 Difference]: Finished difference. Result has 168 places, 148 transitions, 569 flow [2022-11-16 11:45:18,037 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=168, PETRI_TRANSITIONS=148} [2022-11-16 11:45:18,041 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 37 predicate places. [2022-11-16 11:45:18,041 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 148 transitions, 569 flow [2022-11-16 11:45:18,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 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 11:45:18,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:18,042 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:18,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:18,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:18,250 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:18,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1524416366, now seen corresponding path program 1 times [2022-11-16 11:45:18,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:18,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562604806] [2022-11-16 11:45:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:18,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,380 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:45:18,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:18,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562604806] [2022-11-16 11:45:18,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562604806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:18,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:18,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:18,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666836963] [2022-11-16 11:45:18,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:18,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:45:18,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:18,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:45:18,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:45:18,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 150 [2022-11-16 11:45:18,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 148 transitions, 569 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 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 11:45:18,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:18,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 150 [2022-11-16 11:45:18,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:18,587 INFO L130 PetriNetUnfolder]: 89/585 cut-off events. [2022-11-16 11:45:18,587 INFO L131 PetriNetUnfolder]: For 488/489 co-relation queries the response was YES. [2022-11-16 11:45:18,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 585 events. 89/585 cut-off events. For 488/489 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2966 event pairs, 9 based on Foata normal form. 8/582 useless extension candidates. Maximal degree in co-relation 1225. Up to 66 conditions per place. [2022-11-16 11:45:18,595 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 14 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-11-16 11:45:18,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 151 transitions, 620 flow [2022-11-16 11:45:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:45:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:45:18,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 655 transitions. [2022-11-16 11:45:18,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2022-11-16 11:45:18,599 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 655 transitions. [2022-11-16 11:45:18,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 655 transitions. [2022-11-16 11:45:18,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:18,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 655 transitions. [2022-11-16 11:45:18,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 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 11:45:18,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:18,605 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 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 11:45:18,605 INFO L175 Difference]: Start difference. First operand has 168 places, 148 transitions, 569 flow. Second operand 5 states and 655 transitions. [2022-11-16 11:45:18,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 151 transitions, 620 flow [2022-11-16 11:45:18,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 151 transitions, 610 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:45:18,614 INFO L231 Difference]: Finished difference. Result has 169 places, 148 transitions, 579 flow [2022-11-16 11:45:18,615 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=579, PETRI_PLACES=169, PETRI_TRANSITIONS=148} [2022-11-16 11:45:18,616 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 38 predicate places. [2022-11-16 11:45:18,617 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 148 transitions, 579 flow [2022-11-16 11:45:18,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 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 11:45:18,617 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:18,618 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:18,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:45:18,618 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:18,619 INFO L85 PathProgramCache]: Analyzing trace with hash 458033767, now seen corresponding path program 1 times [2022-11-16 11:45:18,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:18,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246054381] [2022-11-16 11:45:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:18,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:18,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:18,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246054381] [2022-11-16 11:45:18,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246054381] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:18,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917952] [2022-11-16 11:45:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:18,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:18,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:18,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:18,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:45:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:45:19,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:19,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:45:19,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:19,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:45:19,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:45:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842485258] [2022-11-16 11:45:19,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:19,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:45:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:45:19,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:45:19,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 150 [2022-11-16 11:45:19,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 148 transitions, 579 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 11:45:19,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:19,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 150 [2022-11-16 11:45:19,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:19,372 INFO L130 PetriNetUnfolder]: 85/573 cut-off events. [2022-11-16 11:45:19,373 INFO L131 PetriNetUnfolder]: For 522/523 co-relation queries the response was YES. [2022-11-16 11:45:19,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 573 events. 85/573 cut-off events. For 522/523 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2841 event pairs, 4 based on Foata normal form. 8/570 useless extension candidates. Maximal degree in co-relation 1240. Up to 69 conditions per place. [2022-11-16 11:45:19,380 INFO L137 encePairwiseOnDemand]: 145/150 looper letters, 19 selfloop transitions, 6 changer transitions 1/155 dead transitions. [2022-11-16 11:45:19,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 155 transitions, 648 flow [2022-11-16 11:45:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:45:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 916 transitions. [2022-11-16 11:45:19,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8723809523809524 [2022-11-16 11:45:19,384 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 916 transitions. [2022-11-16 11:45:19,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 916 transitions. [2022-11-16 11:45:19,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:19,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 916 transitions. [2022-11-16 11:45:19,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:19,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 11:45:19,392 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 11:45:19,392 INFO L175 Difference]: Start difference. First operand has 169 places, 148 transitions, 579 flow. Second operand 7 states and 916 transitions. [2022-11-16 11:45:19,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 155 transitions, 648 flow [2022-11-16 11:45:19,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 155 transitions, 636 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:45:19,401 INFO L231 Difference]: Finished difference. Result has 171 places, 147 transitions, 575 flow [2022-11-16 11:45:19,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=575, PETRI_PLACES=171, PETRI_TRANSITIONS=147} [2022-11-16 11:45:19,402 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 40 predicate places. [2022-11-16 11:45:19,403 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 147 transitions, 575 flow [2022-11-16 11:45:19,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 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 11:45:19,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:19,404 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:19,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:19,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:19,611 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 11:45:19,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:19,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1612989648, now seen corresponding path program 1 times [2022-11-16 11:45:19,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:19,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761859825] [2022-11-16 11:45:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:19,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:45:19,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:19,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761859825] [2022-11-16 11:45:19,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761859825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:19,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:19,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:45:19,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638762610] [2022-11-16 11:45:19,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:19,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:45:19,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:19,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:45:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:45:19,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-11-16 11:45:19,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 147 transitions, 575 flow. Second operand has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 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 11:45:19,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:19,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-11-16 11:45:19,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:20,011 INFO L130 PetriNetUnfolder]: 74/564 cut-off events. [2022-11-16 11:45:20,012 INFO L131 PetriNetUnfolder]: For 693/693 co-relation queries the response was YES. [2022-11-16 11:45:20,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 564 events. 74/564 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2661 event pairs, 4 based on Foata normal form. 9/568 useless extension candidates. Maximal degree in co-relation 1267. Up to 54 conditions per place. [2022-11-16 11:45:20,017 INFO L137 encePairwiseOnDemand]: 141/150 looper letters, 0 selfloop transitions, 0 changer transitions 154/154 dead transitions. [2022-11-16 11:45:20,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 154 transitions, 674 flow [2022-11-16 11:45:20,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:45:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 993 transitions. [2022-11-16 11:45:20,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8275 [2022-11-16 11:45:20,022 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 993 transitions. [2022-11-16 11:45:20,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 993 transitions. [2022-11-16 11:45:20,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:20,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 993 transitions. [2022-11-16 11:45:20,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.125) internal successors, (993), 8 states have internal predecessors, (993), 0 states have call successors, (0), 0 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 11:45:20,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 11:45:20,031 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 11:45:20,031 INFO L175 Difference]: Start difference. First operand has 171 places, 147 transitions, 575 flow. Second operand 8 states and 993 transitions. [2022-11-16 11:45:20,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 154 transitions, 674 flow [2022-11-16 11:45:20,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 154 transitions, 657 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:45:20,039 INFO L231 Difference]: Finished difference. Result has 171 places, 0 transitions, 0 flow [2022-11-16 11:45:20,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=171, PETRI_TRANSITIONS=0} [2022-11-16 11:45:20,040 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 40 predicate places. [2022-11-16 11:45:20,040 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 0 transitions, 0 flow [2022-11-16 11:45:20,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 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 11:45:20,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-16 11:45:20,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-16 11:45:20,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-16 11:45:20,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-16 11:45:20,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-16 11:45:20,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-16 11:45:20,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-16 11:45:20,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-16 11:45:20,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-11-16 11:45:20,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-16 11:45:20,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-16 11:45:20,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-16 11:45:20,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-16 11:45:20,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-16 11:45:20,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-16 11:45:20,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-16 11:45:20,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-16 11:45:20,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-16 11:45:20,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:45:20,049 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:20,056 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:45:20,056 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:45:20,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:45:20 BasicIcfg [2022-11-16 11:45:20,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:45:20,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:45:20,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:45:20,064 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:45:20,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:09" (3/4) ... [2022-11-16 11:45:20,068 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:45:20,076 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 11:45:20,076 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 11:45:20,081 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-16 11:45:20,082 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 11:45:20,082 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:45:20,082 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:45:20,127 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:45:20,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:45:20,128 INFO L158 Benchmark]: Toolchain (without parser) took 12187.49ms. Allocated memory was 123.7MB in the beginning and 222.3MB in the end (delta: 98.6MB). Free memory was 80.9MB in the beginning and 193.0MB in the end (delta: -112.0MB). Peak memory consumption was 116.5MB. Max. memory is 16.1GB. [2022-11-16 11:45:20,129 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 123.7MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:45:20,129 INFO L158 Benchmark]: CACSL2BoogieTranslator took 980.07ms. Allocated memory is still 123.7MB. Free memory was 80.7MB in the beginning and 81.9MB in the end (delta: -1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:45:20,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.27ms. Allocated memory is still 123.7MB. Free memory was 81.9MB in the beginning and 79.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:45:20,130 INFO L158 Benchmark]: Boogie Preprocessor took 52.18ms. Allocated memory is still 123.7MB. Free memory was 79.2MB in the beginning and 77.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:45:20,131 INFO L158 Benchmark]: RCFGBuilder took 881.59ms. Allocated memory is still 123.7MB. Free memory was 77.7MB in the beginning and 60.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 11:45:20,131 INFO L158 Benchmark]: TraceAbstraction took 10142.73ms. Allocated memory was 123.7MB in the beginning and 222.3MB in the end (delta: 98.6MB). Free memory was 59.9MB in the beginning and 66.5MB in the end (delta: -6.6MB). Peak memory consumption was 95.1MB. Max. memory is 16.1GB. [2022-11-16 11:45:20,132 INFO L158 Benchmark]: Witness Printer took 64.46ms. Allocated memory is still 222.3MB. Free memory was 66.5MB in the beginning and 193.0MB in the end (delta: -126.5MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2022-11-16 11:45:20,134 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 123.7MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 980.07ms. Allocated memory is still 123.7MB. Free memory was 80.7MB in the beginning and 81.9MB in the end (delta: -1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.27ms. Allocated memory is still 123.7MB. Free memory was 81.9MB in the beginning and 79.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.18ms. Allocated memory is still 123.7MB. Free memory was 79.2MB in the beginning and 77.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 881.59ms. Allocated memory is still 123.7MB. Free memory was 77.7MB in the beginning and 60.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10142.73ms. Allocated memory was 123.7MB in the beginning and 222.3MB in the end (delta: 98.6MB). Free memory was 59.9MB in the beginning and 66.5MB in the end (delta: -6.6MB). Peak memory consumption was 95.1MB. Max. memory is 16.1GB. * Witness Printer took 64.46ms. Allocated memory is still 222.3MB. Free memory was 66.5MB in the beginning and 193.0MB in the end (delta: -126.5MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 202 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.9s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 257 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 257 mSDsluCounter, 216 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 122 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 632 IncrementalHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 94 mSDtfsCounter, 632 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 480 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=584occurred in iteration=10, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1748 NumberOfCodeBlocks, 1748 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1729 ConstructedInterpolants, 0 QuantifiedInterpolants, 2799 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1060 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 90/128 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:45:20,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_451c2d07-bd67-4a46-85ae-c8dedbf33109/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE