./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 02:33:18,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:33:18,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:33:18,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:33:18,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:33:18,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:33:18,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:33:18,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:33:18,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:33:18,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:33:18,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:33:18,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:33:18,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:33:18,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:33:18,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:33:18,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:33:18,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:33:18,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:33:18,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:33:18,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:33:18,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:33:18,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:33:18,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:33:18,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:33:18,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:33:18,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:33:18,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:33:18,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:33:18,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:33:18,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:33:18,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:33:18,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:33:18,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:33:18,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:33:18,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:33:18,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:33:18,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:33:18,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:33:18,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:33:18,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:33:18,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:33:18,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 02:33:18,807 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:33:18,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:33:18,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:33:18,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:33:18,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:33:18,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:33:18,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:33:18,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:33:18,810 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:33:18,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:33:18,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:33:18,811 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:33:18,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:33:18,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:33:18,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:33:18,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:33:18,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:33:18,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:33:18,813 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 02:33:18,813 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:33:18,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:33:18,813 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:33:18,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:33:18,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:33:18,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:33:18,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:33:18,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:33:18,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:33:18,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:33:18,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:33:18,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:33:18,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:33:18,815 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:33:18,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:33:18,816 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:33:18,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:33:18,816 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_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-11-23 02:33:19,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:33:19,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:33:19,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:33:19,107 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:33:19,108 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:33:19,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-23 02:33:22,255 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:33:22,511 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:33:22,512 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-23 02:33:22,523 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/data/e1e4f025d/a6af328ca1ce49d4b5a8b64cdb17be34/FLAG25bb433d6 [2022-11-23 02:33:22,538 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/data/e1e4f025d/a6af328ca1ce49d4b5a8b64cdb17be34 [2022-11-23 02:33:22,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:33:22,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:33:22,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:33:22,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:33:22,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:33:22,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686c5f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22, skipping insertion in model container [2022-11-23 02:33:22,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:33:22,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:33:22,796 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_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-23 02:33:22,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:33:22,813 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:33:22,845 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_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-23 02:33:22,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:33:22,864 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:33:22,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22 WrapperNode [2022-11-23 02:33:22,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:33:22,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:33:22,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:33:22,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:33:22,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,921 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 178 [2022-11-23 02:33:22,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:33:22,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:33:22,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:33:22,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:33:22,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,952 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:33:22,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:33:22,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:33:22,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:33:22,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (1/1) ... [2022-11-23 02:33:22,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:33:22,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:33:23,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:33:23,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:33:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:33:23,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 02:33:23,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 02:33:23,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 02:33:23,039 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 02:33:23,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 02:33:23,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 02:33:23,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 02:33:23,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 02:33:23,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 02:33:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:33:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:33:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:33:23,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:33:23,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:33:23,043 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 02:33:23,150 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:33:23,153 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:33:23,867 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:33:23,890 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:33:23,891 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-23 02:33:23,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:33:23 BoogieIcfgContainer [2022-11-23 02:33:23,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:33:23,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:33:23,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:33:23,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:33:23,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:33:22" (1/3) ... [2022-11-23 02:33:23,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b03f7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:33:23, skipping insertion in model container [2022-11-23 02:33:23,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:22" (2/3) ... [2022-11-23 02:33:23,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b03f7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:33:23, skipping insertion in model container [2022-11-23 02:33:23,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:33:23" (3/3) ... [2022-11-23 02:33:23,912 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-11-23 02:33:23,921 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 02:33:23,931 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:33:23,932 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-23 02:33:23,932 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 02:33:24,070 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 02:33:24,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 337 transitions, 698 flow [2022-11-23 02:33:24,253 INFO L130 PetriNetUnfolder]: 28/334 cut-off events. [2022-11-23 02:33:24,253 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 02:33:24,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 334 events. 28/334 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 539 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-11-23 02:33:24,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 337 transitions, 698 flow [2022-11-23 02:33:24,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 313 transitions, 641 flow [2022-11-23 02:33:24,281 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 02:33:24,306 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 313 transitions, 641 flow [2022-11-23 02:33:24,308 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 313 transitions, 641 flow [2022-11-23 02:33:24,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 313 transitions, 641 flow [2022-11-23 02:33:24,384 INFO L130 PetriNetUnfolder]: 27/313 cut-off events. [2022-11-23 02:33:24,384 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 02:33:24,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 313 events. 27/313 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 532 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-11-23 02:33:24,393 INFO L119 LiptonReduction]: Number of co-enabled transitions 11400 [2022-11-23 02:33:37,471 INFO L134 LiptonReduction]: Checked pairs total: 16159 [2022-11-23 02:33:37,471 INFO L136 LiptonReduction]: Total number of compositions: 341 [2022-11-23 02:33:37,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:33:37,496 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;@10832deb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:33:37,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-11-23 02:33:37,499 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-23 02:33:37,499 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 02:33:37,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:37,500 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 02:33:37,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-23 02:33:37,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:37,506 INFO L85 PathProgramCache]: Analyzing trace with hash 40913, now seen corresponding path program 1 times [2022-11-23 02:33:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:37,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94597071] [2022-11-23 02:33:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:37,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:33:37,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:37,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94597071] [2022-11-23 02:33:37,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94597071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:33:37,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:33:37,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 02:33:37,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834234358] [2022-11-23 02:33:37,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:33:37,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:33:37,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:33:37,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:33:37,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 678 [2022-11-23 02:33:37,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:37,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:33:37,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 678 [2022-11-23 02:33:37,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:33:40,087 INFO L130 PetriNetUnfolder]: 11167/15093 cut-off events. [2022-11-23 02:33:40,088 INFO L131 PetriNetUnfolder]: For 564/564 co-relation queries the response was YES. [2022-11-23 02:33:40,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30827 conditions, 15093 events. 11167/15093 cut-off events. For 564/564 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 76084 event pairs, 8074 based on Foata normal form. 0/7218 useless extension candidates. Maximal degree in co-relation 14220. Up to 7543 conditions per place. [2022-11-23 02:33:40,185 INFO L137 encePairwiseOnDemand]: 666/678 looper letters, 99 selfloop transitions, 6 changer transitions 0/106 dead transitions. [2022-11-23 02:33:40,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 452 flow [2022-11-23 02:33:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:33:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:33:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1035 transitions. [2022-11-23 02:33:40,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5088495575221239 [2022-11-23 02:33:40,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1035 transitions. [2022-11-23 02:33:40,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1035 transitions. [2022-11-23 02:33:40,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:33:40,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1035 transitions. [2022-11-23 02:33:40,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:40,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:40,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:40,302 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1035 transitions. [2022-11-23 02:33:40,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 452 flow [2022-11-23 02:33:40,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 106 transitions, 434 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-23 02:33:40,317 INFO L231 Difference]: Finished difference. Result has 55 places, 62 transitions, 176 flow [2022-11-23 02:33:40,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=62} [2022-11-23 02:33:40,323 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2022-11-23 02:33:40,324 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 62 transitions, 176 flow [2022-11-23 02:33:40,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.6666666666667) internal successors, (926), 3 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:40,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:40,325 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:33:40,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 02:33:40,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-23 02:33:40,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:40,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1271520, now seen corresponding path program 1 times [2022-11-23 02:33:40,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:40,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807311657] [2022-11-23 02:33:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:40,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:33:40,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:40,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807311657] [2022-11-23 02:33:40,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807311657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:33:40,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:33:40,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:33:40,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218566506] [2022-11-23 02:33:40,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:33:40,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:33:40,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:40,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:33:40,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:33:40,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 678 [2022-11-23 02:33:40,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:40,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:33:40,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 678 [2022-11-23 02:33:40,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:33:42,117 INFO L130 PetriNetUnfolder]: 11167/15090 cut-off events. [2022-11-23 02:33:42,117 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2022-11-23 02:33:42,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30650 conditions, 15090 events. 11167/15090 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 76075 event pairs, 8074 based on Foata normal form. 0/7217 useless extension candidates. Maximal degree in co-relation 15305. Up to 15074 conditions per place. [2022-11-23 02:33:42,251 INFO L137 encePairwiseOnDemand]: 674/678 looper letters, 57 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-11-23 02:33:42,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 280 flow [2022-11-23 02:33:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:33:42,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:33:42,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2022-11-23 02:33:42,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48180924287118976 [2022-11-23 02:33:42,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2022-11-23 02:33:42,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2022-11-23 02:33:42,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:33:42,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2022-11-23 02:33:42,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:42,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:42,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:42,266 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 176 flow. Second operand 3 states and 980 transitions. [2022-11-23 02:33:42,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 280 flow [2022-11-23 02:33:42,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:33:42,269 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 154 flow [2022-11-23 02:33:42,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2022-11-23 02:33:42,270 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2022-11-23 02:33:42,270 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 154 flow [2022-11-23 02:33:42,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:42,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:42,272 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 02:33:42,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 02:33:42,273 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-23 02:33:42,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1271550, now seen corresponding path program 1 times [2022-11-23 02:33:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:42,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936023060] [2022-11-23 02:33:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:42,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:33:42,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:42,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936023060] [2022-11-23 02:33:42,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936023060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:33:42,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661504761] [2022-11-23 02:33:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:42,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:42,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:33:42,411 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:33:42,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:33:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:42,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:33:42,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:33:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:33:42,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:33:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:33:42,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661504761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:33:42,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:33:42,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-23 02:33:42,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311899578] [2022-11-23 02:33:42,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:33:42,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:33:42,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:33:42,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:33:42,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 678 [2022-11-23 02:33:42,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:42,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:33:42,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 678 [2022-11-23 02:33:42,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:33:46,771 INFO L130 PetriNetUnfolder]: 27916/37719 cut-off events. [2022-11-23 02:33:46,771 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2022-11-23 02:33:46,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76587 conditions, 37719 events. 27916/37719 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 1510. Compared 208538 event pairs, 20185 based on Foata normal form. 0/18059 useless extension candidates. Maximal degree in co-relation 76579. Up to 7541 conditions per place. [2022-11-23 02:33:46,997 INFO L137 encePairwiseOnDemand]: 669/678 looper letters, 228 selfloop transitions, 21 changer transitions 0/250 dead transitions. [2022-11-23 02:33:46,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 250 transitions, 1088 flow [2022-11-23 02:33:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:33:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 02:33:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2106 transitions. [2022-11-23 02:33:47,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5176991150442478 [2022-11-23 02:33:47,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2106 transitions. [2022-11-23 02:33:47,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2106 transitions. [2022-11-23 02:33:47,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:33:47,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2106 transitions. [2022-11-23 02:33:47,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 351.0) internal successors, (2106), 6 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:47,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:47,024 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:47,024 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 154 flow. Second operand 6 states and 2106 transitions. [2022-11-23 02:33:47,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 250 transitions, 1088 flow [2022-11-23 02:33:47,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 250 transitions, 1087 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 02:33:47,029 INFO L231 Difference]: Finished difference. Result has 59 places, 74 transitions, 303 flow [2022-11-23 02:33:47,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=59, PETRI_TRANSITIONS=74} [2022-11-23 02:33:47,031 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2022-11-23 02:33:47,031 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 74 transitions, 303 flow [2022-11-23 02:33:47,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:47,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:47,033 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-23 02:33:47,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:33:47,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:47,249 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-23 02:33:47,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash -771658833, now seen corresponding path program 2 times [2022-11-23 02:33:47,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:47,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864535442] [2022-11-23 02:33:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:47,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:33:47,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:47,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864535442] [2022-11-23 02:33:47,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864535442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:33:47,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807833289] [2022-11-23 02:33:47,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:33:47,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:47,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:33:47,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:33:47,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:33:47,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 02:33:47,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:33:47,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:33:47,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:33:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 02:33:47,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:33:47,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807833289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:33:47,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:33:47,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-23 02:33:47,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906965054] [2022-11-23 02:33:47,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:33:47,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:33:47,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:47,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:33:47,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:33:47,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 678 [2022-11-23 02:33:47,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 74 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:47,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:33:47,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 678 [2022-11-23 02:33:47,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:33:50,830 INFO L130 PetriNetUnfolder]: 27916/37718 cut-off events. [2022-11-23 02:33:50,830 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-11-23 02:33:50,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76632 conditions, 37718 events. 27916/37718 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1719. Compared 212121 event pairs, 20185 based on Foata normal form. 1/18040 useless extension candidates. Maximal degree in co-relation 76620. Up to 37673 conditions per place. [2022-11-23 02:33:51,015 INFO L137 encePairwiseOnDemand]: 675/678 looper letters, 66 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2022-11-23 02:33:51,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 437 flow [2022-11-23 02:33:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:33:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:33:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 986 transitions. [2022-11-23 02:33:51,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48475909537856443 [2022-11-23 02:33:51,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 986 transitions. [2022-11-23 02:33:51,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 986 transitions. [2022-11-23 02:33:51,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:33:51,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 986 transitions. [2022-11-23 02:33:51,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:51,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:51,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:51,027 INFO L175 Difference]: Start difference. First operand has 59 places, 74 transitions, 303 flow. Second operand 3 states and 986 transitions. [2022-11-23 02:33:51,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 437 flow [2022-11-23 02:33:51,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 407 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-23 02:33:51,034 INFO L231 Difference]: Finished difference. Result has 59 places, 73 transitions, 275 flow [2022-11-23 02:33:51,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=73} [2022-11-23 02:33:51,035 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2022-11-23 02:33:51,036 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 73 transitions, 275 flow [2022-11-23 02:33:51,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:51,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:51,037 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-11-23 02:33:51,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:33:51,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:51,243 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-23 02:33:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:51,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2023974431, now seen corresponding path program 1 times [2022-11-23 02:33:51,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:51,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657710549] [2022-11-23 02:33:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:51,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:33:51,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:51,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657710549] [2022-11-23 02:33:51,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657710549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:33:51,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055108740] [2022-11-23 02:33:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:51,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:51,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:33:51,398 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:33:51,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:33:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:51,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 02:33:51,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:33:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:33:51,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:33:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:33:51,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055108740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:33:51,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:33:51,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-23 02:33:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636353434] [2022-11-23 02:33:51,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:33:51,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 02:33:51,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:51,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 02:33:51,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:33:51,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 678 [2022-11-23 02:33:51,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 73 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 309.15384615384613) internal successors, (4019), 13 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:51,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:33:51,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 678 [2022-11-23 02:33:51,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:33:58,979 INFO L130 PetriNetUnfolder]: 61414/82976 cut-off events. [2022-11-23 02:33:58,980 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2022-11-23 02:33:59,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168529 conditions, 82976 events. 61414/82976 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 2060. Compared 483802 event pairs, 44407 based on Foata normal form. 12/39766 useless extension candidates. Maximal degree in co-relation 168516. Up to 8470 conditions per place. [2022-11-23 02:33:59,373 INFO L137 encePairwiseOnDemand]: 670/678 looper letters, 491 selfloop transitions, 51 changer transitions 0/543 dead transitions. [2022-11-23 02:33:59,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 543 transitions, 2479 flow [2022-11-23 02:33:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:33:59,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 02:33:59,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4250 transitions. [2022-11-23 02:33:59,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.522369714847591 [2022-11-23 02:33:59,389 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4250 transitions. [2022-11-23 02:33:59,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4250 transitions. [2022-11-23 02:33:59,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:33:59,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4250 transitions. [2022-11-23 02:33:59,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 354.1666666666667) internal successors, (4250), 12 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:59,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 678.0) internal successors, (8814), 13 states have internal predecessors, (8814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:59,423 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 678.0) internal successors, (8814), 13 states have internal predecessors, (8814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:59,423 INFO L175 Difference]: Start difference. First operand has 59 places, 73 transitions, 275 flow. Second operand 12 states and 4250 transitions. [2022-11-23 02:33:59,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 543 transitions, 2479 flow [2022-11-23 02:33:59,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 543 transitions, 2455 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 02:33:59,441 INFO L231 Difference]: Finished difference. Result has 74 places, 103 transitions, 611 flow [2022-11-23 02:33:59,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=611, PETRI_PLACES=74, PETRI_TRANSITIONS=103} [2022-11-23 02:33:59,443 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2022-11-23 02:33:59,444 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 103 transitions, 611 flow [2022-11-23 02:33:59,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 309.15384615384613) internal successors, (4019), 13 states have internal predecessors, (4019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:59,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:33:59,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:33:59,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:33:59,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f4c8b94-6ac0-4819-85de-8eebb48e39a8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:33:59,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-23 02:33:59,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:33:59,652 INFO L85 PathProgramCache]: Analyzing trace with hash -569355006, now seen corresponding path program 1 times [2022-11-23 02:33:59,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:33:59,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283852083] [2022-11-23 02:33:59,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:33:59,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:33:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:33:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:33:59,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:33:59,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283852083] [2022-11-23 02:33:59,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283852083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:33:59,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:33:59,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:33:59,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289629181] [2022-11-23 02:33:59,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:33:59,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:33:59,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:33:59,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:33:59,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:33:59,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 678 [2022-11-23 02:33:59,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 103 transitions, 611 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:33:59,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:33:59,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 678 [2022-11-23 02:33:59,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 02:34:11,738 INFO L130 PetriNetUnfolder]: 104831/144719 cut-off events. [2022-11-23 02:34:11,739 INFO L131 PetriNetUnfolder]: For 578/578 co-relation queries the response was YES. [2022-11-23 02:34:12,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291104 conditions, 144719 events. 104831/144719 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 4225. Compared 997695 event pairs, 44407 based on Foata normal form. 0/72225 useless extension candidates. Maximal degree in co-relation 291085. Up to 82889 conditions per place. [2022-11-23 02:34:12,739 INFO L137 encePairwiseOnDemand]: 674/678 looper letters, 138 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2022-11-23 02:34:12,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 141 transitions, 972 flow [2022-11-23 02:34:12,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:34:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 02:34:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1037 transitions. [2022-11-23 02:34:12,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5098328416912488 [2022-11-23 02:34:12,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1037 transitions. [2022-11-23 02:34:12,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1037 transitions. [2022-11-23 02:34:12,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 02:34:12,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1037 transitions. [2022-11-23 02:34:12,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:12,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:12,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:12,755 INFO L175 Difference]: Start difference. First operand has 74 places, 103 transitions, 611 flow. Second operand 3 states and 1037 transitions. [2022-11-23 02:34:12,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 141 transitions, 972 flow [2022-11-23 02:34:12,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 141 transitions, 828 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-11-23 02:34:12,762 INFO L231 Difference]: Finished difference. Result has 72 places, 104 transitions, 481 flow [2022-11-23 02:34:12,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=72, PETRI_TRANSITIONS=104} [2022-11-23 02:34:12,763 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 16 predicate places. [2022-11-23 02:34:12,764 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 104 transitions, 481 flow [2022-11-23 02:34:12,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:12,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 02:34:12,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:34:12,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:34:12,765 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-23 02:34:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:34:12,766 INFO L85 PathProgramCache]: Analyzing trace with hash -569354854, now seen corresponding path program 1 times [2022-11-23 02:34:12,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:34:12,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004238319] [2022-11-23 02:34:12,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:34:12,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:34:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:34:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:34:12,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:34:12,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004238319] [2022-11-23 02:34:12,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004238319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:34:12,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:34:12,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:34:12,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268066742] [2022-11-23 02:34:12,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:34:12,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:34:12,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:34:12,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:34:12,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:34:13,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 678 [2022-11-23 02:34:13,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 104 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:34:13,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 02:34:13,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 678 [2022-11-23 02:34:13,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand