./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R --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 b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --- 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-38b53e6 [2022-11-25 16:42:33,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:42:33,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:42:33,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:42:33,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:42:33,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:42:33,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:42:33,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:42:33,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:42:33,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:42:33,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:42:33,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:42:33,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:42:33,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:42:33,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:42:33,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:42:33,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:42:33,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:42:33,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:42:33,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:42:33,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:42:33,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:42:33,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:42:33,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:42:33,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:42:33,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:42:33,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:42:33,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:42:33,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:42:33,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:42:33,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:42:33,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:42:33,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:42:33,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:42:33,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:42:33,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:42:33,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:42:33,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:42:33,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:42:33,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:42:33,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:42:33,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 16:42:33,647 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:42:33,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:42:33,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:42:33,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:42:33,651 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:42:33,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:42:33,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:42:33,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:42:33,653 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:42:33,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:42:33,654 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:42:33,655 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:42:33,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:42:33,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:42:33,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:42:33,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:42:33,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:42:33,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:42:33,656 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 16:42:33,656 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:42:33,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:42:33,657 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:42:33,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:42:33,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:42:33,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:42:33,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:42:33,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:42:33,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:42:33,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:42:33,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:42:33,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:42:33,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:42:33,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:42:33,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:42:33,661 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:42:33,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:42:33,661 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 [2022-11-25 16:42:34,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:42:34,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:42:34,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:42:34,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:42:34,050 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:42:34,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2022-11-25 16:42:37,455 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:42:37,843 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:42:37,844 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2022-11-25 16:42:37,867 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/data/1f48199ba/3108a537fc7a4945b84b38ee267ece86/FLAGa280bec72 [2022-11-25 16:42:37,890 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/data/1f48199ba/3108a537fc7a4945b84b38ee267ece86 [2022-11-25 16:42:37,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:42:37,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:42:37,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:42:37,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:42:37,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:42:37,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31449ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:37, skipping insertion in model container [2022-11-25 16:42:37,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:42:37" (1/1) ... [2022-11-25 16:42:37,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:42:37,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:42:38,353 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i[30176,30189] [2022-11-25 16:42:38,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:42:38,393 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:42:38,433 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i[30176,30189] [2022-11-25 16:42:38,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:42:38,503 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:42:38,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38 WrapperNode [2022-11-25 16:42:38,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:42:38,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:42:38,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:42:38,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:42:38,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (1/1) ... [2022-11-25 16:42:38,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (1/1) ... [2022-11-25 16:42:38,557 INFO L138 Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-11-25 16:42:38,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:42:38,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:42:38,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:42:38,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:42:38,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (1/1) ... [2022-11-25 16:42:38,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (1/1) ... [2022-11-25 16:42:38,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (1/1) ... [2022-11-25 16:42:38,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (1/1) ... [2022-11-25 16:42:38,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (1/1) ... [2022-11-25 16:42:38,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (1/1) ... [2022-11-25 16:42:38,592 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (1/1) ... [2022-11-25 16:42:38,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (1/1) ... [2022-11-25 16:42:38,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:42:38,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:42:38,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:42:38,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:42:38,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (1/1) ... [2022-11-25 16:42:38,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:42:38,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:42:38,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:42:38,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:42:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:42:38,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:42:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 16:42:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:42:38,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:42:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-25 16:42:38,720 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-25 16:42:38,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:42:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:42:38,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:42:38,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:42:38,723 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:42:38,935 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:42:38,937 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:42:39,238 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:42:39,249 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:42:39,249 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-25 16:42:39,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:39 BoogieIcfgContainer [2022-11-25 16:42:39,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:42:39,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:42:39,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:42:39,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:42:39,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:42:37" (1/3) ... [2022-11-25 16:42:39,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d893bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:39, skipping insertion in model container [2022-11-25 16:42:39,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:42:38" (2/3) ... [2022-11-25 16:42:39,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d893bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:42:39, skipping insertion in model container [2022-11-25 16:42:39,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:42:39" (3/3) ... [2022-11-25 16:42:39,276 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2022-11-25 16:42:39,294 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:42:39,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:42:39,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 16:42:39,309 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:42:39,393 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 16:42:39,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 129 transitions, 266 flow [2022-11-25 16:42:39,528 INFO L130 PetriNetUnfolder]: 17/164 cut-off events. [2022-11-25 16:42:39,528 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:42:39,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 164 events. 17/164 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 368 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-11-25 16:42:39,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 129 transitions, 266 flow [2022-11-25 16:42:39,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 260 flow [2022-11-25 16:42:39,548 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:42:39,570 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 126 transitions, 260 flow [2022-11-25 16:42:39,577 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 126 transitions, 260 flow [2022-11-25 16:42:39,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 260 flow [2022-11-25 16:42:39,635 INFO L130 PetriNetUnfolder]: 16/161 cut-off events. [2022-11-25 16:42:39,635 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:42:39,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 161 events. 16/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 365 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-11-25 16:42:39,641 INFO L119 LiptonReduction]: Number of co-enabled transitions 3240 [2022-11-25 16:42:44,752 INFO L134 LiptonReduction]: Checked pairs total: 5009 [2022-11-25 16:42:44,752 INFO L136 LiptonReduction]: Total number of compositions: 122 [2022-11-25 16:42:44,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:42:44,802 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;@3598cb29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:42:44,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-25 16:42:44,813 INFO L130 PetriNetUnfolder]: 1/8 cut-off events. [2022-11-25 16:42:44,815 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:42:44,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:44,818 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 16:42:44,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 16:42:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash 15345872, now seen corresponding path program 1 times [2022-11-25 16:42:44,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:44,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057885340] [2022-11-25 16:42:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:44,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:45,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:45,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057885340] [2022-11-25 16:42:45,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057885340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:45,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:45,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:42:45,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222293893] [2022-11-25 16:42:45,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:45,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:45,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:45,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:45,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 251 [2022-11-25 16:42:45,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:45,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:45,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 251 [2022-11-25 16:42:45,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:45,437 INFO L130 PetriNetUnfolder]: 84/202 cut-off events. [2022-11-25 16:42:45,437 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:42:45,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 202 events. 84/202 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 786 event pairs, 66 based on Foata normal form. 8/163 useless extension candidates. Maximal degree in co-relation 381. Up to 179 conditions per place. [2022-11-25 16:42:45,441 INFO L137 encePairwiseOnDemand]: 237/251 looper letters, 35 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2022-11-25 16:42:45,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 40 transitions, 162 flow [2022-11-25 16:42:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:45,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-11-25 16:42:45,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5152722443559097 [2022-11-25 16:42:45,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-11-25 16:42:45,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-11-25 16:42:45,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:45,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-11-25 16:42:45,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:45,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:45,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:45,503 INFO L175 Difference]: Start difference. First operand has 33 places, 38 transitions, 84 flow. Second operand 3 states and 388 transitions. [2022-11-25 16:42:45,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 40 transitions, 162 flow [2022-11-25 16:42:45,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 162 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:42:45,513 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 70 flow [2022-11-25 16:42:45,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2022-11-25 16:42:45,521 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-11-25 16:42:45,521 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 70 flow [2022-11-25 16:42:45,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:45,522 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:45,522 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 16:42:45,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:42:45,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 16:42:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:45,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1862475866, now seen corresponding path program 1 times [2022-11-25 16:42:45,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:45,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529685949] [2022-11-25 16:42:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:45,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:45,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:45,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529685949] [2022-11-25 16:42:45,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529685949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:45,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:45,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:42:45,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291730721] [2022-11-25 16:42:45,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:45,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:45,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:45,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:45,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:45,756 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 251 [2022-11-25 16:42:45,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:45,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:45,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 251 [2022-11-25 16:42:45,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:45,903 INFO L130 PetriNetUnfolder]: 77/212 cut-off events. [2022-11-25 16:42:45,903 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-25 16:42:45,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 212 events. 77/212 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 882 event pairs, 14 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 421. Up to 119 conditions per place. [2022-11-25 16:42:45,909 INFO L137 encePairwiseOnDemand]: 243/251 looper letters, 33 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2022-11-25 16:42:45,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 178 flow [2022-11-25 16:42:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:45,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2022-11-25 16:42:45,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.50066401062417 [2022-11-25 16:42:45,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2022-11-25 16:42:45,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2022-11-25 16:42:45,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:45,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2022-11-25 16:42:45,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:45,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:45,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:45,924 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 70 flow. Second operand 3 states and 377 transitions. [2022-11-25 16:42:45,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 178 flow [2022-11-25 16:42:45,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 40 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:42:45,928 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 90 flow [2022-11-25 16:42:45,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2022-11-25 16:42:45,930 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2022-11-25 16:42:45,930 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 90 flow [2022-11-25 16:42:45,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:45,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:45,931 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 16:42:45,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:42:45,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-25 16:42:45,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1862512915, now seen corresponding path program 1 times [2022-11-25 16:42:45,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:45,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195401922] [2022-11-25 16:42:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:45,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:42:45,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:42:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:42:46,031 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:42:46,032 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:42:46,033 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-25 16:42:46,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-25 16:42:46,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-25 16:42:46,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-25 16:42:46,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-25 16:42:46,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-25 16:42:46,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-25 16:42:46,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-25 16:42:46,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-25 16:42:46,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-25 16:42:46,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-25 16:42:46,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-25 16:42:46,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-25 16:42:46,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:42:46,040 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 16:42:46,043 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 16:42:46,044 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 16:42:46,083 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 16:42:46,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 167 transitions, 352 flow [2022-11-25 16:42:46,157 INFO L130 PetriNetUnfolder]: 31/274 cut-off events. [2022-11-25 16:42:46,157 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 16:42:46,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 274 events. 31/274 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 785 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2022-11-25 16:42:46,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 167 transitions, 352 flow [2022-11-25 16:42:46,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 167 transitions, 352 flow [2022-11-25 16:42:46,166 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:42:46,167 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 167 transitions, 352 flow [2022-11-25 16:42:46,167 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 167 transitions, 352 flow [2022-11-25 16:42:46,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 167 transitions, 352 flow [2022-11-25 16:42:46,227 INFO L130 PetriNetUnfolder]: 31/274 cut-off events. [2022-11-25 16:42:46,227 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 16:42:46,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 274 events. 31/274 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 785 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2022-11-25 16:42:46,239 INFO L119 LiptonReduction]: Number of co-enabled transitions 10440 [2022-11-25 16:42:51,217 INFO L134 LiptonReduction]: Checked pairs total: 25292 [2022-11-25 16:42:51,217 INFO L136 LiptonReduction]: Total number of compositions: 151 [2022-11-25 16:42:51,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:42:51,221 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;@3598cb29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:42:51,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 16:42:51,226 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-11-25 16:42:51,226 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:42:51,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:51,227 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:42:51,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 16:42:51,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash 815566529, now seen corresponding path program 1 times [2022-11-25 16:42:51,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:51,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946177292] [2022-11-25 16:42:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:51,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:51,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:51,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946177292] [2022-11-25 16:42:51,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946177292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:51,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:51,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:42:51,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089313916] [2022-11-25 16:42:51,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:51,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:51,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:51,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 318 [2022-11-25 16:42:51,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:51,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:51,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 318 [2022-11-25 16:42:51,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:52,409 INFO L130 PetriNetUnfolder]: 4435/7275 cut-off events. [2022-11-25 16:42:52,409 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-25 16:42:52,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14424 conditions, 7275 events. 4435/7275 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 47298 event pairs, 4228 based on Foata normal form. 536/5662 useless extension candidates. Maximal degree in co-relation 9669. Up to 7046 conditions per place. [2022-11-25 16:42:52,462 INFO L137 encePairwiseOnDemand]: 299/318 looper letters, 58 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2022-11-25 16:42:52,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 272 flow [2022-11-25 16:42:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2022-11-25 16:42:52,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5303983228511531 [2022-11-25 16:42:52,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2022-11-25 16:42:52,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2022-11-25 16:42:52,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:52,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2022-11-25 16:42:52,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 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) [2022-11-25 16:42:52,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:52,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:52,478 INFO L175 Difference]: Start difference. First operand has 55 places, 66 transitions, 150 flow. Second operand 3 states and 506 transitions. [2022-11-25 16:42:52,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 272 flow [2022-11-25 16:42:52,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:42:52,485 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 138 flow [2022-11-25 16:42:52,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2022-11-25 16:42:52,489 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2022-11-25 16:42:52,489 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 138 flow [2022-11-25 16:42:52,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:52,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:52,490 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:52,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:42:52,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 16:42:52,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash 2081891784, now seen corresponding path program 1 times [2022-11-25 16:42:52,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:52,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200234832] [2022-11-25 16:42:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:52,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:52,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:52,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200234832] [2022-11-25 16:42:52,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200234832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:52,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:52,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:42:52,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988305819] [2022-11-25 16:42:52,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:52,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:52,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:52,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:52,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:52,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 318 [2022-11-25 16:42:52,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:52,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:52,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 318 [2022-11-25 16:42:52,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:53,797 INFO L130 PetriNetUnfolder]: 5030/8684 cut-off events. [2022-11-25 16:42:53,798 INFO L131 PetriNetUnfolder]: For 493/493 co-relation queries the response was YES. [2022-11-25 16:42:53,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17991 conditions, 8684 events. 5030/8684 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 61344 event pairs, 1676 based on Foata normal form. 76/6912 useless extension candidates. Maximal degree in co-relation 17903. Up to 6101 conditions per place. [2022-11-25 16:42:53,871 INFO L137 encePairwiseOnDemand]: 304/318 looper letters, 76 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2022-11-25 16:42:53,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 396 flow [2022-11-25 16:42:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2022-11-25 16:42:53,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324947589098532 [2022-11-25 16:42:53,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2022-11-25 16:42:53,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2022-11-25 16:42:53,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:53,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2022-11-25 16:42:53,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:53,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:53,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:53,882 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 138 flow. Second operand 3 states and 508 transitions. [2022-11-25 16:42:53,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 396 flow [2022-11-25 16:42:53,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:42:53,890 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 196 flow [2022-11-25 16:42:53,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2022-11-25 16:42:53,893 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2022-11-25 16:42:53,893 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 196 flow [2022-11-25 16:42:53,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:53,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:53,894 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 16:42:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:42:53,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 16:42:53,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:53,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1651884316, now seen corresponding path program 1 times [2022-11-25 16:42:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:53,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29929418] [2022-11-25 16:42:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:53,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:54,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:54,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29929418] [2022-11-25 16:42:54,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29929418] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:42:54,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288530106] [2022-11-25 16:42:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:54,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:42:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:42:54,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:42:54,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:42:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:54,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:42:54,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:42:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:54,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:42:54,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288530106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:54,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:42:54,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 16:42:54,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91924457] [2022-11-25 16:42:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:54,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:42:54,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:54,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:42:54,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:42:54,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 318 [2022-11-25 16:42:54,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:54,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:54,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 318 [2022-11-25 16:42:54,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:55,392 INFO L130 PetriNetUnfolder]: 4702/8219 cut-off events. [2022-11-25 16:42:55,392 INFO L131 PetriNetUnfolder]: For 2006/2006 co-relation queries the response was YES. [2022-11-25 16:42:55,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19446 conditions, 8219 events. 4702/8219 cut-off events. For 2006/2006 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 57164 event pairs, 4137 based on Foata normal form. 0/7153 useless extension candidates. Maximal degree in co-relation 14422. Up to 7928 conditions per place. [2022-11-25 16:42:55,446 INFO L137 encePairwiseOnDemand]: 315/318 looper letters, 60 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2022-11-25 16:42:55,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 350 flow [2022-11-25 16:42:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:42:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 16:42:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 622 transitions. [2022-11-25 16:42:55,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4889937106918239 [2022-11-25 16:42:55,450 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 622 transitions. [2022-11-25 16:42:55,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 622 transitions. [2022-11-25 16:42:55,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:55,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 622 transitions. [2022-11-25 16:42:55,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:55,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:55,460 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 318.0) internal successors, (1590), 5 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:55,460 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 196 flow. Second operand 4 states and 622 transitions. [2022-11-25 16:42:55,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 350 flow [2022-11-25 16:42:55,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:42:55,471 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 184 flow [2022-11-25 16:42:55,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2022-11-25 16:42:55,472 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2022-11-25 16:42:55,472 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 184 flow [2022-11-25 16:42:55,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:55,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:55,473 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 16:42:55,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 16:42:55,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eae1a67-499a-4010-9f37-1877209eb229/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:42:55,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 16:42:55,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:55,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1651884342, now seen corresponding path program 1 times [2022-11-25 16:42:55,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:55,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679005635] [2022-11-25 16:42:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:55,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 16:42:55,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:55,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679005635] [2022-11-25 16:42:55,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679005635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:55,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:55,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:42:55,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297439265] [2022-11-25 16:42:55,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:55,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:42:55,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:55,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:42:55,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:42:55,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 318 [2022-11-25 16:42:55,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:55,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:55,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 318 [2022-11-25 16:42:55,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:56,800 INFO L130 PetriNetUnfolder]: 4374/7597 cut-off events. [2022-11-25 16:42:56,801 INFO L131 PetriNetUnfolder]: For 1229/1229 co-relation queries the response was YES. [2022-11-25 16:42:56,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17500 conditions, 7597 events. 4374/7597 cut-off events. For 1229/1229 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 52699 event pairs, 1365 based on Foata normal form. 0/6740 useless extension candidates. Maximal degree in co-relation 16850. Up to 6554 conditions per place. [2022-11-25 16:42:56,857 INFO L137 encePairwiseOnDemand]: 314/318 looper letters, 74 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2022-11-25 16:42:56,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 422 flow [2022-11-25 16:42:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:42:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:42:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2022-11-25 16:42:56,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5146750524109015 [2022-11-25 16:42:56,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2022-11-25 16:42:56,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2022-11-25 16:42:56,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:56,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2022-11-25 16:42:56,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:56,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:56,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 318.0) internal successors, (1272), 4 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:56,872 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 184 flow. Second operand 3 states and 491 transitions. [2022-11-25 16:42:56,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 422 flow [2022-11-25 16:42:56,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 16:42:56,878 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 193 flow [2022-11-25 16:42:56,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2022-11-25 16:42:56,880 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2022-11-25 16:42:56,880 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 193 flow [2022-11-25 16:42:56,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:56,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:56,881 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:56,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:42:56,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 16:42:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:56,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1428159168, now seen corresponding path program 1 times [2022-11-25 16:42:56,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:56,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074528958] [2022-11-25 16:42:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:56,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:57,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074528958] [2022-11-25 16:42:57,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074528958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:57,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:57,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:42:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877110108] [2022-11-25 16:42:57,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:57,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:42:57,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:57,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:42:57,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:42:57,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 318 [2022-11-25 16:42:57,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:57,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:57,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 318 [2022-11-25 16:42:57,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:58,231 INFO L130 PetriNetUnfolder]: 4969/8657 cut-off events. [2022-11-25 16:42:58,231 INFO L131 PetriNetUnfolder]: For 2930/2930 co-relation queries the response was YES. [2022-11-25 16:42:58,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20603 conditions, 8657 events. 4969/8657 cut-off events. For 2930/2930 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 60790 event pairs, 722 based on Foata normal form. 151/8029 useless extension candidates. Maximal degree in co-relation 20502. Up to 3731 conditions per place. [2022-11-25 16:42:58,283 INFO L137 encePairwiseOnDemand]: 302/318 looper letters, 165 selfloop transitions, 26 changer transitions 0/198 dead transitions. [2022-11-25 16:42:58,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 198 transitions, 1016 flow [2022-11-25 16:42:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:42:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:42:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1145 transitions. [2022-11-25 16:42:58,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5143755615453729 [2022-11-25 16:42:58,287 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1145 transitions. [2022-11-25 16:42:58,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1145 transitions. [2022-11-25 16:42:58,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:58,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1145 transitions. [2022-11-25 16:42:58,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.57142857142858) internal successors, (1145), 7 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:58,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:58,295 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:58,295 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 193 flow. Second operand 7 states and 1145 transitions. [2022-11-25 16:42:58,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 198 transitions, 1016 flow [2022-11-25 16:42:58,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 198 transitions, 998 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:42:58,301 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 407 flow [2022-11-25 16:42:58,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=407, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2022-11-25 16:42:58,302 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2022-11-25 16:42:58,302 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 407 flow [2022-11-25 16:42:58,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:58,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:58,303 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:58,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:42:58,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 16:42:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:58,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1428159086, now seen corresponding path program 1 times [2022-11-25 16:42:58,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:58,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901250242] [2022-11-25 16:42:58,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:58,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:42:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:42:58,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:42:58,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901250242] [2022-11-25 16:42:58,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901250242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:42:58,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:42:58,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:42:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094626624] [2022-11-25 16:42:58,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:42:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:42:58,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:42:58,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:42:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:42:58,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 318 [2022-11-25 16:42:58,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 407 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:58,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:42:58,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 318 [2022-11-25 16:42:58,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:42:59,513 INFO L130 PetriNetUnfolder]: 4708/8331 cut-off events. [2022-11-25 16:42:59,513 INFO L131 PetriNetUnfolder]: For 9133/9133 co-relation queries the response was YES. [2022-11-25 16:42:59,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24043 conditions, 8331 events. 4708/8331 cut-off events. For 9133/9133 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 59177 event pairs, 662 based on Foata normal form. 253/8009 useless extension candidates. Maximal degree in co-relation 23935. Up to 3826 conditions per place. [2022-11-25 16:42:59,590 INFO L137 encePairwiseOnDemand]: 302/318 looper letters, 168 selfloop transitions, 33 changer transitions 0/208 dead transitions. [2022-11-25 16:42:59,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 208 transitions, 1270 flow [2022-11-25 16:42:59,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:42:59,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 16:42:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1142 transitions. [2022-11-25 16:42:59,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5130278526504941 [2022-11-25 16:42:59,658 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1142 transitions. [2022-11-25 16:42:59,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1142 transitions. [2022-11-25 16:42:59,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:42:59,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1142 transitions. [2022-11-25 16:42:59,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:59,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:59,677 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 318.0) internal successors, (2544), 8 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:59,678 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 407 flow. Second operand 7 states and 1142 transitions. [2022-11-25 16:42:59,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 208 transitions, 1270 flow [2022-11-25 16:42:59,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 208 transitions, 1270 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:42:59,715 INFO L231 Difference]: Finished difference. Result has 82 places, 91 transitions, 657 flow [2022-11-25 16:42:59,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=318, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=657, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2022-11-25 16:42:59,718 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2022-11-25 16:42:59,719 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 91 transitions, 657 flow [2022-11-25 16:42:59,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:42:59,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:42:59,720 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 16:42:59,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:42:59,721 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 16:42:59,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:42:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1676998726, now seen corresponding path program 1 times [2022-11-25 16:42:59,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:42:59,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618122548] [2022-11-25 16:42:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:42:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:42:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:42:59,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:42:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:42:59,772 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:42:59,773 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:42:59,773 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-25 16:42:59,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-25 16:42:59,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-25 16:42:59,774 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-25 16:42:59,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-25 16:42:59,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-25 16:42:59,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-25 16:42:59,775 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-25 16:42:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-25 16:42:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-25 16:42:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-25 16:42:59,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-25 16:42:59,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-25 16:42:59,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-25 16:42:59,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-25 16:42:59,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-25 16:42:59,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-25 16:42:59,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 16:42:59,778 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:42:59,779 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 16:42:59,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 16:42:59,825 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 16:42:59,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 205 transitions, 440 flow [2022-11-25 16:42:59,908 INFO L130 PetriNetUnfolder]: 50/425 cut-off events. [2022-11-25 16:42:59,908 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 16:42:59,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 425 events. 50/425 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1398 event pairs, 1 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 282. Up to 16 conditions per place. [2022-11-25 16:42:59,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 205 transitions, 440 flow [2022-11-25 16:42:59,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 205 transitions, 440 flow [2022-11-25 16:42:59,917 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:42:59,918 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 205 transitions, 440 flow [2022-11-25 16:42:59,918 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 205 transitions, 440 flow [2022-11-25 16:42:59,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 205 transitions, 440 flow [2022-11-25 16:42:59,988 INFO L130 PetriNetUnfolder]: 50/425 cut-off events. [2022-11-25 16:42:59,988 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-25 16:42:59,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 425 events. 50/425 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1398 event pairs, 1 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 282. Up to 16 conditions per place. [2022-11-25 16:43:00,013 INFO L119 LiptonReduction]: Number of co-enabled transitions 19872 [2022-11-25 16:43:05,083 INFO L134 LiptonReduction]: Checked pairs total: 48808 [2022-11-25 16:43:05,084 INFO L136 LiptonReduction]: Total number of compositions: 181 [2022-11-25 16:43:05,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:43:05,094 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;@3598cb29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:43:05,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-25 16:43:05,097 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2022-11-25 16:43:05,098 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:43:05,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:05,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 16:43:05,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:43:05,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:05,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1219622736, now seen corresponding path program 1 times [2022-11-25 16:43:05,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:05,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085038324] [2022-11-25 16:43:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:05,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:05,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:05,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085038324] [2022-11-25 16:43:05,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085038324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:05,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:05,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:43:05,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812332873] [2022-11-25 16:43:05,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:05,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:05,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:05,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:05,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 386 [2022-11-25 16:43:05,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 89 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:05,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:05,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 386 [2022-11-25 16:43:05,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:15,721 INFO L130 PetriNetUnfolder]: 99392/142510 cut-off events. [2022-11-25 16:43:15,722 INFO L131 PetriNetUnfolder]: For 2441/2441 co-relation queries the response was YES. [2022-11-25 16:43:15,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282114 conditions, 142510 events. 99392/142510 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 3686. Compared 1064856 event pairs, 64598 based on Foata normal form. 13015/110356 useless extension candidates. Maximal degree in co-relation 24698. Up to 137955 conditions per place. [2022-11-25 16:43:16,847 INFO L137 encePairwiseOnDemand]: 361/386 looper letters, 73 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2022-11-25 16:43:16,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 348 flow [2022-11-25 16:43:16,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:43:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:43:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2022-11-25 16:43:16,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5328151986183074 [2022-11-25 16:43:16,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 617 transitions. [2022-11-25 16:43:16,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 617 transitions. [2022-11-25 16:43:16,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:16,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 617 transitions. [2022-11-25 16:43:16,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:16,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:16,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:16,858 INFO L175 Difference]: Start difference. First operand has 73 places, 89 transitions, 208 flow. Second operand 3 states and 617 transitions. [2022-11-25 16:43:16,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 348 flow [2022-11-25 16:43:16,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 84 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:43:16,866 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 184 flow [2022-11-25 16:43:16,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2022-11-25 16:43:16,868 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2022-11-25 16:43:16,868 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 184 flow [2022-11-25 16:43:16,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:16,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:16,869 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:43:16,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 16:43:16,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:43:16,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:16,870 INFO L85 PathProgramCache]: Analyzing trace with hash -459817448, now seen corresponding path program 1 times [2022-11-25 16:43:16,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:16,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2325469] [2022-11-25 16:43:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:16,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:16,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:16,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2325469] [2022-11-25 16:43:16,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2325469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:16,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:16,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:43:16,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761826196] [2022-11-25 16:43:16,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:16,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:16,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:16,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:16,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 386 [2022-11-25 16:43:16,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:16,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:16,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 386 [2022-11-25 16:43:16,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:43:30,266 INFO L130 PetriNetUnfolder]: 130103/192769 cut-off events. [2022-11-25 16:43:30,266 INFO L131 PetriNetUnfolder]: For 9410/9410 co-relation queries the response was YES. [2022-11-25 16:43:30,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394243 conditions, 192769 events. 130103/192769 cut-off events. For 9410/9410 co-relation queries the response was YES. Maximal size of possible extension queue 5204. Compared 1590999 event pairs, 54658 based on Foata normal form. 0/147371 useless extension candidates. Maximal degree in co-relation 394149. Up to 141027 conditions per place. [2022-11-25 16:43:31,102 INFO L137 encePairwiseOnDemand]: 366/386 looper letters, 102 selfloop transitions, 8 changer transitions 0/118 dead transitions. [2022-11-25 16:43:31,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 532 flow [2022-11-25 16:43:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:43:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:43:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2022-11-25 16:43:31,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.538860103626943 [2022-11-25 16:43:31,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2022-11-25 16:43:31,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2022-11-25 16:43:31,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:43:31,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2022-11-25 16:43:31,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:31,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:31,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:31,112 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 184 flow. Second operand 3 states and 624 transitions. [2022-11-25 16:43:31,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 532 flow [2022-11-25 16:43:31,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 118 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 16:43:31,146 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 266 flow [2022-11-25 16:43:31,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2022-11-25 16:43:31,147 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2022-11-25 16:43:31,147 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 266 flow [2022-11-25 16:43:31,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:31,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:43:31,148 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-25 16:43:31,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 16:43:31,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-25 16:43:31,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:43:31,149 INFO L85 PathProgramCache]: Analyzing trace with hash 718260125, now seen corresponding path program 1 times [2022-11-25 16:43:31,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:43:31,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654174510] [2022-11-25 16:43:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:43:31,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:43:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:43:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:43:31,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:43:31,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654174510] [2022-11-25 16:43:31,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654174510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:43:31,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:43:31,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:43:31,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656283609] [2022-11-25 16:43:31,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:43:31,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:43:31,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:43:31,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:43:31,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:43:31,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 386 [2022-11-25 16:43:31,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:43:31,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:43:31,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 386 [2022-11-25 16:43:31,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand